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Wang Y, Li K, Shen W, Huang X, Wu L. Point-of-care testing of methamphetamine and cocaine utilizing wearable sensors. Anal Biochem 2024; 691:115526. [PMID: 38621604 DOI: 10.1016/j.ab.2024.115526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Revised: 03/23/2024] [Accepted: 03/26/2024] [Indexed: 04/17/2024]
Abstract
The imperative for the point-of-care testing of methamphetamine and cocaine in drug abuse prevention necessitates innovative solutions. To address this need, we have introduced a multi-channel wearable sensor harnessing CRISPR/Cas12a system. A CRISPR/Cas12a based system, integrated with aptamers specific to methamphetamine and cocaine, has been engineered. These aptamers function as signal-mediated intermediaries, converting methamphetamine and cocaine into nucleic acid signals, subsequently generating single-stranded DNA to activate the Cas12 protein. Additionally, we have integrated a microfluidic system and magnetic separation technology into the CRISPR system, enabling rapid and precise detection of cocaine and methamphetamine. The proposed sensing platform demonstrated exceptional sensitivity, achieving a detection limit as low as 0.1 ng/mL. This sensor is expected to be used for on-site drug detection in the future.
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Affiliation(s)
- Ying Wang
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing, 210023, PR China
| | - Ke Li
- Center for Materials Synthetic Biology, Shenzhen Institute of Synthetic Biology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, PR China
| | - Weijian Shen
- Animal, Plant and Food Inspection Center of Nanjing Customs District, Nanjing, 210000, PR China
| | - Xingxu Huang
- International Research Center of Synthetic Biology, Nanjing Normal University, Nanjing, 210023, PR China
| | - Lina Wu
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing, 210023, PR China; Food Laboratory of Zhongyuan, Luohe, 462300, Henan, PR China.
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2
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Ott CE. Strategies for assessing the limit of detection in voltammetric methods: comparison and evaluation of approaches. Analyst 2024. [PMID: 38990215 DOI: 10.1039/d4an00636d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/12/2024]
Abstract
The realm of analytical chemistry continues to struggle with defining and evaluating the limit of detection in analytical methods in the sense that a multitude of definitions, criteria, caveats, and methods have been proposed, developed, and adopted across disciplines. The last decade has seen a surge in the growth of electrochemical methods and studies in the field of forensic science and forensic chemistry. While many disciplines within forensic science have established method validation guidelines, the historical and current lack of electrochemical methods within forensic laboratories throughout the United States has left a major gap in knowledge, inhibiting the adoption and utilization of electrochemistry, which may serve as a powerful tool in many subdisciplines of forensics. As such, this work begins this discussion by focusing first on the limit of detection (LOD), with application toward both qualitative and quantitative methods. Both inorganic (ferrocyanide and lead) and organic (diphenylamine, naltrexone, and acetaminophen) target analytes were analyzed via two common voltammetry methods: cyclic voltammetry and square-wave voltammetry. The LOD for each analyte was estimated and/or calculated following a variety of literature-described methods and compared. The accuracy and reliability of these LOD characteristics based on the experimental data is described herein along with suggestions and recommendations. This manuscript is intended to compare the resulting LOD values from various methods and provide a starting point for the incorporation of electrochemistry into the forensic science laboratory, beginning a focused discussion on the development of validation guidelines and parameters needed for the adoption of this technology in forensic laboratories in order to meet the standards required by the criminal justice system.
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Affiliation(s)
- Colby E Ott
- National Institute of Standards and Technology, USA.
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3
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Frinculescu A, Mercer B, Shine T, Ramsey J, Couchman L, Douce D, Frascione N, Abbate V. Assessment of a Single Quadrupole Mass Spectrometer Combined with an Atmospheric Solids Analysis Probe for the On-Site Identification of Amnesty Bin Drugs. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2024; 35:1480-1489. [PMID: 38837752 PMCID: PMC11228975 DOI: 10.1021/jasms.4c00064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Revised: 05/16/2024] [Accepted: 05/20/2024] [Indexed: 06/07/2024]
Abstract
The surging number of people who abuse drugs has a great impact on healthcare and law enforcement systems. Amnesty bin drug analysis helps monitor the "street drug market" and tailor the harm reduction advice. Therefore, rapid and accurate drug analysis methods are crucial for on-site work. An analytical method for the rapid identification of five commonly detected drugs ((3,4-methylenedioxymethamphetamine (MDMA), cocaine, ketamine, 4-bromo-2,5-dimethoxyphenethylamine, and chloromethcathinone)) at various summer festivals in the U.K. was developed and validated employing a single quadrupole mass spectrometer combined with an atmospheric pressure solids analysis probe (ASAP-MS). The results were confirmed on a benchtop gas chromatography-mass spectrometry instrument and included all samples that challenged the conventional spectroscopic techniques routinely employed on-site. Although the selectivity/specificity step of the validation assessment of the MS system proved a challenge, it still produced 93% (N = 279) and 92.5% (N = 87) correct results when tested on- and off-site, respectively. A few "partly correct" results showed some discrepancies between the results, with the MS-only unit missing some low intensity active ingredients (N-ethylpentylone, MDMA) and cutting agents (caffeine, paracetamol, and benzocaine) or detecting some when not present. The incorrect results were mainly based on library coverage. The study proved that the ASAP-MS instrument can successfully complement the spectroscopic techniques used for qualitative drug analysis on- and off-site. Although the validation testing highlighted some areas for improvement concerning selectivity/specificity for structurally similar compounds, this method has the potential to be used in trend monitoring and harm reduction.
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Affiliation(s)
- Anca Frinculescu
- Department
of Analytical, Environmental and Forensic Sciences, King’s College London, 150 Stamford Street, London SE1 9NH, United
Kingdom
- TICTAC
Communications Limited, Room 1.159 Jenner Wing, St. George’s University of London, Cranmer Terrace, London SW17 0RE, United
Kingdom
| | - Benjamin Mercer
- Clinical
Pharmacology, William Harvey Research Institute, Queen Mary University of London, London EC1M 6BQ, United Kingdom
| | - Trevor Shine
- TICTAC
Communications Limited, Room 1.159 Jenner Wing, St. George’s University of London, Cranmer Terrace, London SW17 0RE, United
Kingdom
| | - John Ramsey
- TICTAC
Communications Limited, Room 1.159 Jenner Wing, St. George’s University of London, Cranmer Terrace, London SW17 0RE, United
Kingdom
| | - Lewis Couchman
- Department
of Analytical, Environmental and Forensic Sciences, King’s College London, 150 Stamford Street, London SE1 9NH, United
Kingdom
- Analytical
Services International, St. George’s
University of London, Cranmer Terrace, London SW17 0RE, United Kingdom
| | - David Douce
- Waters
Corporation, Stamford
Avenue, Wilmslow SK9 4AX, United Kingdom
| | - Nunzianda Frascione
- Department
of Analytical, Environmental and Forensic Sciences, King’s College London, 150 Stamford Street, London SE1 9NH, United
Kingdom
| | - Vincenzo Abbate
- Department
of Analytical, Environmental and Forensic Sciences, King’s College London, 150 Stamford Street, London SE1 9NH, United
Kingdom
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Macrino CDJ, Dos Santos NA, Conceição NDS, Baptista CSD, Neto AC, Romão W. Isolation and characterization of reference standard candidates for cocaine and benzoylecgonine obtained from illicit substances seized. J Forensic Sci 2024; 69:1025-1034. [PMID: 38520078 DOI: 10.1111/1556-4029.15502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 02/16/2024] [Accepted: 02/29/2024] [Indexed: 03/25/2024]
Abstract
The area of forensic chemistry has been growing and developing as a line of research due to the high demands of public safety that require increasingly reliable results due to their importance in criminalistics. In this way, the development of new technologies that help this area, whether in the identification and quantification of drugs or the fight against fraud, becomes promising. In this context, the present work explored the production of reference standards from the purification of cocaine/crack samples seized by the Civil Police of the State of Espírito Santo. Cocaine was purified using chromatographic techniques, and benzoylecgonine was synthesized from purified cocaine. All substances were characterized by ultra-high-resolution mass spectrometry and nuclear magnetic resonance. Homogeneity and stability studies were also performed with benzoylecgonine, and the results were evaluated using analysis of variance (ANOVA). Cocaine and benzoylecgonine showed purities of 98.37% and 96.34%, respectively. The homogeneity of the batch, short-term stability, and other parameters were also evaluated, which together indicate this proposal as promising in the development of reference standards for drugs of abuse from samples seized by the Brazilian forensic police.
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Affiliation(s)
- Clebson de Jesus Macrino
- Laboratório de Petroleômica e Química Forense, Departamento de Química, Universidade Federal do Espírito Santo, Vitória, Espírito Santo, Brazil
| | - Nayara A Dos Santos
- Laboratório de Petroleômica e Química Forense, Departamento de Química, Universidade Federal do Espírito Santo, Vitória, Espírito Santo, Brazil
- Instituto Nacional de Ciência e Tecnologia Forense (INCT Forense), Vila Velha, Espírito Santo, Brazil
| | - Nathália Dos S Conceição
- Laboratório de Petroleômica e Química Forense, Departamento de Química, Universidade Federal do Espírito Santo, Vitória, Espírito Santo, Brazil
- Instituto Nacional de Ciência e Tecnologia Forense (INCT Forense), Vila Velha, Espírito Santo, Brazil
| | - Clara S D Baptista
- Laboratório de Petroleômica e Química Forense, Departamento de Química, Universidade Federal do Espírito Santo, Vitória, Espírito Santo, Brazil
| | - Alvaro Cunha Neto
- Laboratório de Petroleômica e Química Forense, Departamento de Química, Universidade Federal do Espírito Santo, Vitória, Espírito Santo, Brazil
| | - Wanderson Romão
- Laboratório de Petroleômica e Química Forense, Departamento de Química, Universidade Federal do Espírito Santo, Vitória, Espírito Santo, Brazil
- Instituto Nacional de Ciência e Tecnologia Forense (INCT Forense), Vila Velha, Espírito Santo, Brazil
- Instituto Federal do Espírito Santo, Vila Velha, Espírito Santo, Brazil
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Frinculescu A, Shine T, Ramsey J, Couchman L, Frascione N, Abbate V. Analysis of drugs seized from amnesty bins at two major United Kingdom summer music festivals using two portable gas chromatography-mass spectrometry (GC-MS) instruments. Drug Test Anal 2024. [PMID: 38263623 DOI: 10.1002/dta.3629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 11/20/2023] [Accepted: 12/06/2023] [Indexed: 01/25/2024]
Abstract
Globally, the number of drug users and the proportion of the drug using population has increased from 210 million in 2009 to 269 million in 2019. Several studies suggest that music festival attendees are more likely to abuse illicit substances and have a high-risk profile. Consequently, it is crucial to develop robust field drug analysis methods that facilitate harm reduction and drug monitoring. The work presented in this report aimed at developing and validating qualitative analytical methods for 3,4-methylenedioxymethamphetamine, 4-bromo-2,5-dimethoxyphenethylamine (2C-B), ketamine and N-ethylpentylone on two portable gas chromatography-mass spectrometry (GC-MS) systems: Griffin G510 (Teledyne FLIR, West Lafayette, IN) and Torion T-9 (PerkinElmer, Shelton, CT). The diagnostic ability of the mobile GC-MS units was assessed on 200 samples in total, seized at two large summer music festivals in the United Kingdom. The method validation process included selectivity/specificity, limit of identification, carry-over, ruggedness/robustness, and inter- and intra-day precision (repeatability and reproducibility). The Griffin G510 demonstrated a limit of identification from 1 mg/mL for 2C-B to 0.063 mg/mL for ketamine and good ruggedness and precision results. The precision for 2C-B using the Torion T-9 was poorer than for the Griffin G510, but equivalent for the other compounds tested. Correct identifications (versus benchtop GC-MS) for the two festivals were 85%-86% and 74%-83% for the Griffin G510 and the Torion T-9, respectively. The two portable instruments were able to adequately cover current on-site drug-testing analytical gaps and proved to be a powerful addition to the on-site drug analysis techniques.
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Affiliation(s)
- Anca Frinculescu
- Department of Analytical, Environmental and Forensic Sciences, King's College London, London, UK
- TICTAC Communications Ltd., St. George's University of London, London, UK
| | - Trevor Shine
- TICTAC Communications Ltd., St. George's University of London, London, UK
| | - John Ramsey
- TICTAC Communications Ltd., St. George's University of London, London, UK
| | - Lewis Couchman
- Department of Analytical, Environmental and Forensic Sciences, King's College London, London, UK
- Analytical Services International, St. George's University of London, London, UK
| | - Nunzianda Frascione
- Department of Analytical, Environmental and Forensic Sciences, King's College London, London, UK
| | - Vincenzo Abbate
- Department of Analytical, Environmental and Forensic Sciences, King's College London, London, UK
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6
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Ferrari Júnior E, da Rocha TMV, Santos JP, de Souza DM, Gomes EB, Alves BEP, de Andrade Gomes J, Salum LB, Lunardi CN, Arantes LC, da Silva Santos V. Irgafos 168 and Irganox 1076 as new cocaine cutting agents: A COVID-19 pandemic impact on cocaine profiling and trafficking in Brazil. Forensic Sci Int 2024; 354:111911. [PMID: 38154425 DOI: 10.1016/j.forsciint.2023.111911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 11/06/2023] [Accepted: 12/06/2023] [Indexed: 12/30/2023]
Abstract
BACKGROUNDS Restrictions in movement and closure of borders imposed by the Sars-Cov- 2 worldwide pandemic have affected the global illicit drug market, including cocaine trafficking. In this scenario, comparing cutting agents added to the cocaine and the drug purity are valuable strategies to understand how the drug trade has been impacted by the pandemic. METHODS In this work, 204 cocaine salt materials seized in the Brazilian Federal District, before (2019) and during COVID-19 pandemics (2020) were analyzed by two analytical techniques: gas chromatography-mass spectrometry (GC-MS) and Fourier-transform infrared spectroscopy (FTIR). Statistical analyses, including Principal Component Analysis (PCA), were applied to evaluate the COVID-19 pandemic impact in the local market. Bibliometric analysis was performed as a forensic intelligence tool. RESULTS From 2019-2020, cocaine average purity decreased 26 % while the frequency of cutting agents, as caffeine and anesthetics (lidocaine, tetracaine) increased. The high percentage of unknown were increased. Different cocaine profiling seized in 2020 showed new cutting agents, such as Irganox 1076, and Irgafos 168, indicating a trend on new adulterants/diluents introduced in the local market to mitigate the local drug shortage. Also in 2020, there was an increase in the local cocaine seizures, despite of the cocaine drug purity decreased by 26 % compared to 2019. CONCLUSIONS Taken together, these data showed that the covid-19 pandemics has impacted cocaine trafficking in the Brazilian Federal District, an increase in cocaine seizures, which may indicate greater demand for the drug and, specially, changes in the cocaine purity and cutting agents profiling showing how traffickers tried to minimize difficulties in crossing the Brazilian border during COVID-19 restrictions. The information is relevant since Brazil is one of the major departure points for traded cocaine to the world. Bibliometric analysis showed that Irgafos 168 and Irganox 1076 were consistently identified as cocaine cutting agents for the first time.
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Affiliation(s)
- Ettore Ferrari Júnior
- Forensic Physics and Chemistry Laboratory, Criminalistics Institute - Civil Police of the Brazilian Federal District (PCDF), Brasilia, DF, Brazil
| | | | - Junior Pereira Santos
- Laboratory of Photochemistry and Nanobiotechnology, Faculty of Ceilandia, University of Brasilia (UnB), Brasilia, DF, Brazil; Laboratory of Toxicological Analysis (AToxLab), Faculty of Ceilandia, University of Brasília (UnB), Brasilia, DF, Brazil
| | - Diego Mendes de Souza
- Forensic Physics and Chemistry Laboratory, Criminalistics Institute - Civil Police of the Brazilian Federal District (PCDF), Brasilia, DF, Brazil
| | - Eliude Barbosa Gomes
- Forensic Physics and Chemistry Laboratory, Criminalistics Institute - Civil Police of the Brazilian Federal District (PCDF), Brasilia, DF, Brazil
| | - Bárbara Elisa Pereira Alves
- Forensic Physics and Chemistry Laboratory, Criminalistics Institute - Civil Police of the Brazilian Federal District (PCDF), Brasilia, DF, Brazil
| | - Juliano de Andrade Gomes
- Forensic Physics and Chemistry Laboratory, Criminalistics Institute - Civil Police of the Brazilian Federal District (PCDF), Brasilia, DF, Brazil
| | - Lívia Barros Salum
- Forensic Physics and Chemistry Laboratory, Criminalistics Institute - Civil Police of the Brazilian Federal District (PCDF), Brasilia, DF, Brazil
| | - Claure Nain Lunardi
- Laboratory of Photochemistry and Nanobiotechnology, Faculty of Ceilandia, University of Brasilia (UnB), Brasilia, DF, Brazil
| | - Luciano Chaves Arantes
- Forensic Physics and Chemistry Laboratory, Criminalistics Institute - Civil Police of the Brazilian Federal District (PCDF), Brasilia, DF, Brazil
| | - Vivian da Silva Santos
- Laboratory of Toxicological Analysis (AToxLab), Faculty of Ceilandia, University of Brasília (UnB), Brasilia, DF, Brazil.
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de Freitas LVP, Alponti ALB, Damaceno MA, Campanharo SC, da Silva AFB, Sasanya JJ, Rath S, Paschoal JAR. Levamisole incorporation in fish feed - Ensuring the medication dose and avoidance of leaching into the water. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2023; 40:1551-1567. [PMID: 37988113 DOI: 10.1080/19440049.2023.2283769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Accepted: 11/10/2023] [Indexed: 11/22/2023]
Abstract
Levamisole, an anthelmintic and immunostimulant drug, has been studied as a promising alternative for aquaculture use. While oral administration through feeding is the main route of administration in fish farming, no studies evaluating methods of levamisole incorporation into the feed have been reported so far. Therefore, this study aimed to evaluate potential procedures for levamisole incorporation in extruded fish feed using ethyl cellulose, gelatin, or vegetable oil, to avoid drug leaching to the water during the animal's medication. A suitable LC-MS/MS method was optimized (full factorial design), validated, and applied to evaluate the efficiency of the process, the homogeneity of the drug concentration, and the leaching rate. The method has been demonstrated to be selective, precise (RSD < 4.9%), accurate (recovery > 98.4%), and linear (r > 0.99, 125-750 mg kg-1). The incorporation procedures using the three coating agents showed high incorporation efficiency (70%) and a homogeneous drug concentration among the extruded feed pellets. A low levamisole leaching rate was verified in the feed prepared using the ethyl cellulose coating procedure (4.3% after 15 min of immersion in the water). On the other hand, fish feed coated with gelatin and oil resulted in a high leaching rate (30-35% after 15 min). Thus, this study shows that coating ethyl cellulose may be a promising procedure for levamisole incorporation in fish feed and with the potential to enhance its use in animal production while reducing environmental contamination.
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Affiliation(s)
- Lucas Victor Pereira de Freitas
- Department of Biomolecular Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
| | - Ana Luísa Bigliassi Alponti
- Department of Biomolecular Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
| | - Marina Alves Damaceno
- Department of Biomolecular Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
| | - Sarah Chagas Campanharo
- Department of Biomolecular Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
| | - Agnaldo Fernando Baldo da Silva
- Department of Biomolecular Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
| | | | - Susanne Rath
- Department of Analytical Chemistry, Institute of Chemistry, University of Campinas, São Paulo, Brazil
| | - Jonas Augusto Rizzato Paschoal
- Department of Biomolecular Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
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Grover C, How J, Close R. Fentanyl, etizolam, and beyond: A feasibility study of a community partnership using handheld Raman spectrometry to identify substances in the local illicit drug supply. J Public Health Res 2023; 12:22799036231166313. [PMID: 37035449 PMCID: PMC10074623 DOI: 10.1177/22799036231166313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Accepted: 03/10/2023] [Indexed: 04/05/2023] Open
Abstract
Background: The United States is currently experiencing an unprecedented rise in fatal drug overdoses, which is in part due to the arrival of fentanyl, fentanyl analogs, and other synthetic drugs into the illicit drug supply. Traditional urine drug testing is often unable to detect fentanyl analogs and other novel synthetic drugs, which places physicians and first responders in the difficult position of treating patients who are intoxicated with or overdosing on unknown substances. Design and methods: We report, as a feasibility study, the development of a novel program to use a handheld Raman spectrometry device in our hospital’s Emergency Department to surveil our local illicit drug supply in terms of what substances are being sold and used. Results: Using our novel program, we were able to detect 27 substances in our illicit drug supply over a 10 month period, including fentanyl analogues. We shared, through our local opioid safety coalition, real-time information to first responders, substance use treatment programs, and physicians about the novel substances we detected using the handheld Raman spectrometer. Conclusions: A community partnership of using handheld Raman spectrometry in our hospital’s Emergency Department was successful in providing information to health care providers about novel substances in our illicit drug market. Additionally, the implementation of this program improved collaboration between local health care providers and local law enforcement.
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Affiliation(s)
- Casey Grover
- Community Hospital of the Monterey Peninsula, Monterey, CA, USA
| | - Justine How
- Community Hospital of the Monterey Peninsula, Monterey, CA, USA
| | - Reb Close
- Community Hospital of the Monterey Peninsula, Monterey, CA, USA
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New Psychoactive Substances Intoxications and Fatalities during the COVID-19 Epidemic. BIOLOGY 2023; 12:biology12020273. [PMID: 36829550 PMCID: PMC9953068 DOI: 10.3390/biology12020273] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 02/02/2023] [Accepted: 02/03/2023] [Indexed: 02/11/2023]
Abstract
In January 2020, the World Health Organization (WHO) issued a Public Health Emergency of International Concern, declaring the COVID-19 outbreak a pandemic in March 2020. Stringent measures decreased consumption of some drugs, moving the illicit market to alternative substances, such as New Psychoactive Substances (NPS). A systematic literature search was performed, using scientific databases such as PubMed, Scopus, Web of Science and institutional and government websites, to identify reported intoxications and fatalities from NPS during the COVID-19 pandemic. The search terms were: COVID-19, SARS-CoV-2, severe acute respiratory syndrome coronavirus 2, coronavirus disease 2019, intox*, fatal*, new psychoactive substance, novel psychoactive substance, smart drugs, new psychoactive substance, novel synthetic opioid, synthetic opioid, synthetic cathinone, bath salts, legal highs, nitazene, bath salt, legal high, synthetic cannabinoid, phenethylamine, phencyclidine, piperazine, novel benzodiazepine, benzodiazepine analogue, designer benzodiazepines, tryptamine and psychostimulant. From January 2020 to March 2022, 215 NPS exposures were reported in Europe, UK, Japan and USA. Single NPS class intoxications accounted for 25, while mixed NPS class intoxications represented only 3 cases. A total of 130 NPS single class fatalities and 56 fatalities involving mixed NPS classes were published during the pandemic. Synthetic opioids were the NPS class most abused, followed by synthetic cathinones and synthetic cannabinoids. Notably, designer benzodiazepines were frequently found in combination with fentalogues. Considering the stress to communities and healthcare systems generated by the pandemic, NPS-related information may be underestimated. However, we could not define the exact impacts of COVID-19 on processing of toxicological data, autopsy and death investigations.
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10
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Midthun KM, Nelson BN, Strathmann FG, Browne T, Logan BK. Analysis of umbilical cord tissue as an indicator of in utero exposure to toxic adulterating substances. Front Pediatr 2023; 11:1127020. [PMID: 37025298 PMCID: PMC10070803 DOI: 10.3389/fped.2023.1127020] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Accepted: 02/27/2023] [Indexed: 04/08/2023] Open
Abstract
In utero drug exposure is a significant public health threat to the well-being and normal development of the neonate. Recently, testing of umbilical cord tissue (UCT) has been employed to measure illicit drug exposure, as drugs used by the mother during the third trimester may be retained in the UCT. Focus has also been given to potential adverse health effects among drug users, resulting from exposure to pharmacologically active adulterants and cutting agents in the street drug supply. The in utero effects of these substances have not been well studied in humans, nor has their presence been demonstrated as a means for assessing adverse health effects in the neonate. Here, we describe the application of a novel test method to analyze UCT for the presence of more than 20 common adulterating/cutting substances via LC/Q-TOF. In total, 300 de-identified UCT samples were analyzed-all had previously tested positive for cocaine or opiates. Generally, the positivity rates of individual compounds were similar between the Cocaine and Opiates Subgroups, apart from levamisole, xylazine, dipyrone (metabolites), and promethazine. Many of the adulterants used in the street drug supply do have legitimate medicinal/therapeutic uses, including several of the compounds most frequently detected in this study. Caffeine and lidocaine were the most frequently identified compounds both individually (>70% each) and in combination with each other. Alternatively, levamisole, an adulterant with no legitimate therapeutic use, was present in 12% of cases. Importantly, this data demonstrates that the detection of traditional drugs of abuse may serve as indicators of potential in utero exposure to toxic adulterating substances during gestation. While there is cause for concern with respect to any unintentional drug exposure, illicit drug use during pregnancy, including uncontrolled dosing, poly-adulterant consumption, and the interactions of these drug mixtures, produces a significant public health threat to the neonate which warrants further study.
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Affiliation(s)
- Kari M. Midthun
- NMS Labs, Horsham, PA, United States
- Correspondence: Kari M. Midthun
| | | | | | - Thom Browne
- Colombo Plan Secretariat, Colombo, Sri Lanka
| | - Barry K. Logan
- NMS Labs, Horsham, PA, United States
- Center for Forensic Science Research and Education (CFSRE) at the Fredric Rieders Family Foundation, Willow Grove, PA, United States
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11
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Gosetti F, Consonni V, Ballabio D, Orlandi ME, Amodio A, Valeria Picci M, Visentin M, Termopoli V. From the Streets to the Judicial Evidence: Determination of Traditional Illicit Substances in Drug Seizures by a Rapid and Sensitive UHPLC-MS/MS-Based Platform. MOLECULES (BASEL, SWITZERLAND) 2022; 28:molecules28010164. [PMID: 36615358 PMCID: PMC9822244 DOI: 10.3390/molecules28010164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Revised: 12/20/2022] [Accepted: 12/22/2022] [Indexed: 12/28/2022]
Abstract
According to the 2021 World Drug Report, around 275 million people use drugs of abuse, and 36 million people suffer from addiction, fostering a thriving market for illicit substances. In Italy, 30,083 people were reported to the Judicial Authority for offenses in violation of the Italian Law D.P.R. 309/1990. These offences are sentenced after a qualitative-quantitative analysis of seized materials. Given the large quantity of seized drugs and the need to perform accurate analytical determinations, Italian forensic laboratories struggle to complete analyses in a short time, delaying the entire reporting process needed to achieve sentencing. For this purpose, an UHPLC-MS/MS-based platform was developed at the University of Milano-Bicocca to support law-enforcement authorities. Software was designed to easily manage street seizure acquisition, documentation registration, and sampling. A sensitive UHPLC-MS/MS method was fully validated for the quantification of the traditional illicit substances (cocaine, heroin, 6-MAM, morphine, amphetamine, methamphetamine, MDMA, ketamine, GHB, GBL, LSD, trans-∆9-THC, and THCA) at the ppb level. The final report is relayed to the Prefecture in 3-4 days, even within 24 h for urgent requests. The platform allows for semi-automatic data handling to minimize erroneous results for an accurate report generation by standardized procedures.
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Affiliation(s)
- Fabio Gosetti
- Department of Earth and Environmental Sciences, University of Milano-Bicocca, Piazza della Scienza 1, 20126 Milan, Italy
| | - Viviana Consonni
- Department of Earth and Environmental Sciences, University of Milano-Bicocca, Piazza della Scienza 1, 20126 Milan, Italy
| | - Davide Ballabio
- Department of Earth and Environmental Sciences, University of Milano-Bicocca, Piazza della Scienza 1, 20126 Milan, Italy
- Correspondence: (D.B.); (V.T.)
| | - Marco Emilio Orlandi
- Department of Earth and Environmental Sciences, University of Milano-Bicocca, Piazza della Scienza 1, 20126 Milan, Italy
| | - Angelo Amodio
- Legione Carabinieri Lombardia, Comando Provinciale di Milano Sezione, Investigazioni Scientifiche L.A.S.S., Via V. Monti 58, 20145 Milan, Italy
| | - Maria Valeria Picci
- Gabinetto Regionale di Polizia Scientifica per la Lombardia, Polizia di Stato, Via Fatebenefratelli 11, 20121 Milan, Italy
| | - Marco Visentin
- Gabinetto Regionale di Polizia Scientifica per la Lombardia, Polizia di Stato, Via Fatebenefratelli 11, 20121 Milan, Italy
| | - Veronica Termopoli
- Department of Earth and Environmental Sciences, University of Milano-Bicocca, Piazza della Scienza 1, 20126 Milan, Italy
- Correspondence: (D.B.); (V.T.)
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12
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Wang J, Pursell ME, DeVor A, Awoyemi O, Valentine SJ, Li P. Portable mass spectrometry system: instrumentation, applications, and path to 'omics analysis. Proteomics 2022; 22:e2200112. [PMID: 36349734 PMCID: PMC10278091 DOI: 10.1002/pmic.202200112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 10/27/2022] [Accepted: 10/28/2022] [Indexed: 11/11/2022]
Abstract
Mass spectrometry (MS) is an information rich analytical technique and plays a key role in various 'omics studies. Standard mass spectrometers are bulky and operate at high vacuum, which hinder their adoption by the broader community and utility in field applications. Developing portable mass spectrometers can significantly expand the application scope and user groups of MS analysis. This review discusses the basics and recent advancements in the development of key components of portable mass spectrometers including ionization source, mass analyzer, detector, and vacuum system. Further, major areas where portable mass spectrometers are applied are also discussed. Finally, a perspective on the further development of portable mass spectrometers including the potential benefits for 'omics analysis is provided.
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Affiliation(s)
- Jing Wang
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, WV, USA
| | - Madison E. Pursell
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, WV, USA
| | - Amanda DeVor
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, WV, USA
| | - Olanrewaju Awoyemi
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, WV, USA
| | - Stephen J. Valentine
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, WV, USA
| | - Peng Li
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, WV, USA
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13
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Zhao B, Li Y, Zhao Y, Ma Y, Li F, Han H, Wang N, Wang X. A sensing platform based on zinc-porphyrin derinative in hexadecyl trimethyl ammonium bromide (CTAB) microemulsion for highly sensitive detection of theophylline. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 281:121592. [PMID: 35878493 DOI: 10.1016/j.saa.2022.121592] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Accepted: 07/01/2022] [Indexed: 06/15/2023]
Abstract
A new porphyrin-based sensing platform in hexadecyl trimethyl ammonium bromide (CTAB) microemulsion is developed for highly sensitive detection of theophylline. In this sensing system, the zinc-porphyrin-cinnamic acid conjugate (Zn-TPPCA) works as fluorescence probe while theophylline can decrease fluorescence intensity of the probe. Further studies indicate the linear relationship between the fluorescence quenching value and the concentration of theophylline within a given range. And the introduction of CTAB microemulsion can greatly enhance sensibility and stability of this detecting system and facilitate the detection of theophylline. On the basis above, a highly sensitive sensing platform for theophylline is created with a low limit of detection (LOD) of 0.0083 μg mL-1 under the optimal detection conditions. And further application of this method in determination of commercially available theophylline preparation shows excellent results. Subsequent studies on quenching mechanism indicate that static quenching appears between Zn-TPPCA and theophylline. Therefore, this work provides not only a highly sensitive method for determination of theophylline but also further evidence for creation of biosensors for drugs with porphyrin derivatives.
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Affiliation(s)
- Baojuan Zhao
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Chemical Engineering and Technology, Tiangong University, Tianjin 300387, PR China; Tianjin Tianhaoyuan Technology Co., Ltd, Tianjin 300450, PR China
| | - Yuancui Li
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Chemical Engineering and Technology, Tiangong University, Tianjin 300387, PR China
| | - Yunhan Zhao
- 1(st) Department of Clinical Medicine, China Medical University, Shenyang, Liaoning 110122, PR China
| | - Yan Ma
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Chemical Engineering and Technology, Tiangong University, Tianjin 300387, PR China
| | - Fengjuan Li
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Chemical Engineering and Technology, Tiangong University, Tianjin 300387, PR China
| | - Hongli Han
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Chemical Engineering and Technology, Tiangong University, Tianjin 300387, PR China
| | - Na Wang
- Technology R&D Center, China Tobacco Hubei Industrial Corporation, Wuhan 430040, PR China.
| | - Xiang Wang
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Chemical Engineering and Technology, Tiangong University, Tianjin 300387, PR China.
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14
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An overview on different detection methods of saffron (Crocus sativus L.) adulterants. JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION 2022. [DOI: 10.1007/s11694-022-01586-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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15
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Determination of Local Anesthetic Drugs in Human Plasma Using Magnetic Solid-Phase Extraction Coupled with High-Performance Liquid Chromatography. Molecules 2022; 27:molecules27175509. [PMID: 36080279 PMCID: PMC9457896 DOI: 10.3390/molecules27175509] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Revised: 08/20/2022] [Accepted: 08/24/2022] [Indexed: 11/17/2022] Open
Abstract
In this work, magnetic tetraethylenepentamine (TEPA)-modified carboxyl–carbon nanotubes were synthesized, characterized, and used as adsorbents to conduct magnetic solid-phase extraction (MSPE) for the preconcentration of seven local anesthetic drugs (procaine, lidocaine, mepivacaine, oxybuprocaine, bupivacaine, tetracaine, and cinchocaine) from human plasma. The separation and determination of analytes were performed on high-performance liquid chromatography with UV detection. Several factors affected the extraction efficiency, such as the amount of adsorbents used, extraction time, sample pH, and optimization of elution conditions. Under optimal conditions, satisfactory linear relationships were obtained in the range of 0.02–5.00 mg/L, with the limits of detection (LOD) ranging from 0.003 mg/L to 0.008 mg/L. The recoveries of analytes for spiked human plasma were in the range of 82.0–108%. Moreover, the precision with intra-day and inter-day RSD values were obtained in the range of 1.5–7.7% and 1.5–8.3%. The results indicated that this method could determine the concentration of seven local anesthetic drugs in human plasma with high precision and repeatability and provide support for the clinical monitoring of the concentration of local anesthetic drugs in human plasma.
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16
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Duan C, Li J, Zhang Y, Ding K, Geng X, Guan Y. Portable instruments for on-site analysis of environmental samples. Trends Analyt Chem 2022. [DOI: 10.1016/j.trac.2022.116653] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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17
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Ferris TJ, Haigh LD, Jenner SJ. Identification of Common Cutting Agents in Latent Fingerprints by High-Performance Liquid Chromatography – Electrospray Ionization – Quadrupole Time-of-Flight Mass Spectrometry (HPLC-ESI-qToF-MS). ANAL LETT 2022. [DOI: 10.1080/00032719.2022.2033255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Affiliation(s)
- Trevor J. Ferris
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College, London, UK
| | - Lisa D. Haigh
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College, London, UK
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18
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Abnous K, Abdolabadi AK, Ramezani M, Alibolandi M, Nameghi MA, Zavvar T, Khoshbin Z, Lavaee P, Taghdisi SM, Danesh NM. A highly sensitive electrochemical aptasensor for cocaine detection based on CRISPR-Cas12a and terminal deoxynucleotidyl transferase as signal amplifiers. Talanta 2022; 241:123276. [PMID: 35121546 DOI: 10.1016/j.talanta.2022.123276] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 12/23/2021] [Accepted: 01/27/2022] [Indexed: 12/28/2022]
Abstract
Cocaine is one of the mainly used illegal drugs in the world. Using the signal amplification elements of terminal deoxynucleotidyl transferase (TdT) and CRISPR-Cas12a, a highly sensitive and simple electrochemical aptasensor was introduced for cocaine quantification. When, no cocaine existed in the sample, the 3'-end of complementary strand of aptamer (CS) was extended by TdT, leading to the activation of CRISPR-Cas12a and remaining of very short oligonucleotides on the working electrode. So, the current signal was remarkably promoted. With the presence of cocaine, CS left the electrode surface. Thus, nothing changed following the incubation of TdT and CRISPR-Cas12a and the Aptamer/Cocaine complex presented on the electrode. Consequently, the [Fe(CN)6]3-/4- could not freely reach the electrode surface and the signal response was weak. Under optimal situations, the biosensor revealed a wide linear relation from 40 pM to 150 nM with detection limit of 15 pM for cocaine. The sensitivity of the analytical system was comparable and even better than other reported methods for cocaine detection. The designed method displayed excellent cocaine selectivity. The aptasensor could work well for cocaine assay in serum samples. So, the aptasensor is expected to be an efficient analytical method with broad applications in the determination of diverse analytes.
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Affiliation(s)
- Khalil Abnous
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran; Department of Medicinal Chemistry, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | | | - Mohammad Ramezani
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mona Alibolandi
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Morteza Alinezhad Nameghi
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - TaranehSadat Zavvar
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Zahra Khoshbin
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran; Department of Medicinal Chemistry, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Parirokh Lavaee
- Academic Center for Education, Culture and Research, Research Institute for Industrial Biotechnology, Industrial Biotechnology on Microorganisms, Mashhad, Iran
| | - Seyed Mohammad Taghdisi
- Targeted Drug Delivery Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran; Department of Pharmaceutical Biotechnology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.
| | - Noor Mohammad Danesh
- Department of Medicinal Chemistry, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran; Institute of Science and New Technologies, Tehran, Iran.
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19
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Losacker M, Hundertmark M, Zoerntlein S, Roehrich J, Hess C. Chiral pharmacokinetics of tetramisole stereoisomers – enantioselective quantification of levamisole and dexamisole in serum samples from users of adulterated cocaine. Drug Test Anal 2022; 14:1053-1064. [DOI: 10.1002/dta.3227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 12/29/2021] [Accepted: 01/13/2022] [Indexed: 11/09/2022]
Affiliation(s)
- Moritz Losacker
- Department of Forensic Toxicology Institute of Legal Medicine, University Medical Center Mainz Mainz Germany
| | - Marica Hundertmark
- Department of Forensic Toxicology Institute of Legal Medicine, University Medical Center Mainz Mainz Germany
| | - Siegfried Zoerntlein
- Forensic Science Institute, Dez. 33 Chemistry/Toxicology, State Office of Criminal Investigation Rhineland‐Palatinate Mainz Germany
| | - Joerg Roehrich
- Department of Forensic Toxicology Institute of Legal Medicine, University Medical Center Mainz Mainz Germany
| | - Cornelius Hess
- Department of Forensic Toxicology Institute of Legal Medicine, University Medical Center Mainz Mainz Germany
- Reference Institute for Bioanalytics Bonn Germany
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20
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Laposchan S, Kranenburg RF, van Asten AC. Impurities, adulterants and cutting agents in cocaine as potential candidates for retrospective mining of GC-MS data. Sci Justice 2022; 62:60-75. [PMID: 35033329 DOI: 10.1016/j.scijus.2021.11.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 10/04/2021] [Accepted: 11/22/2021] [Indexed: 12/28/2022]
Abstract
Cocaine is one of the most widely used illicit drugs worldwide. Cocaine powders seized by the Police may contain numerous other substances besides the drug itself. These can be impurities originating from the coca plant or the production process, or be purposely added to the drug formulation as adulterants and cutting agents. In forensic laboratories, identification of cocaine is routinely done through GC-MS analysis, but other components are often ignored even if the method allows for their detection. Yet, they can provide valuable insight into the history of a seizure and its potential connection to other samples. To explore this idea, an extensive review of common impurities and adulterants encountered in cocaine is presented. Based on their incidence, concentration in the end product and compatibility with GC-MS methods, their overall usefulness as candidates for the statistical investigation of existing forensic data is evaluated. The impurities cis- and trans-cinnamoylcocaine, tropacocaine, norcocaine and N-benzoylnormethylecgonine as well as the adulterants lidocaine, procaine, tetracaine, benzocaine, caffeine, acetylsalicylic acid, phenacetin, ibuprofen, levamisole, hydroxyzine and diltiazem are promising candidates to provide additional forensic intelligence. Future research on optimized routine GC-MS methods, signal reproducibility, comparison, statistics and databases is suggested to facilitate this concept. Ultimately, such an approach may significantly advance the amount of information that is extracted from routine casework data, elucidate developments in the cocaine markets in the past and facilitate Police work in the future. Preliminary assessment of existing data from the forensic laboratory of the Amsterdam Police has been included to show that the detection of the identified target impurities is feasible, and that small adjustments to the analysis method could significantly increase the detectability of these analytes in prospective drug screenings. Forensic intelligence based on retrospective data mining of cocaine containing casework samples may thus be realized with minimal additional laboratory efforts by using already available instrumentation, samples and data.
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Affiliation(s)
- Sophia Laposchan
- Dutch National Police, Unit Amsterdam, Forensic Laboratory, Kabelweg 25, Amsterdam 1014 BA, The Netherlands; Van 't Hoff Institute for Molecular Sciences, University of Amsterdam, Postbus 94157, Amsterdam 1090 GD, The Netherlands
| | - Ruben F Kranenburg
- Dutch National Police, Unit Amsterdam, Forensic Laboratory, Kabelweg 25, Amsterdam 1014 BA, The Netherlands; Van 't Hoff Institute for Molecular Sciences, University of Amsterdam, Postbus 94157, Amsterdam 1090 GD, The Netherlands.
| | - Arian C van Asten
- Van 't Hoff Institute for Molecular Sciences, University of Amsterdam, Postbus 94157, Amsterdam 1090 GD, The Netherlands; Co van Ledden Hulsebosch Center (CLHC), Amsterdam Center for Forensic Science and Medicine, Postbus 94157, Amsterdam 1090 GD, The Netherlands
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21
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Hu W, Lu H, Duan Y, Li L, Ding Y, An J, Duan D. An electrochemical sensor based on electrospun MoS2@SnO2 modified carbon nanofiber composite materials for simultaneously detection ofphenacetin and indomethacin. Chem Asian J 2022; 17:e202101372. [PMID: 35018742 DOI: 10.1002/asia.202101372] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 01/07/2022] [Indexed: 11/11/2022]
Abstract
SnO 2 -CNF was prepared by coaxial blending technology, and MoS 2 was grown uniformly on SnO 2 -CNF composite by combining hydrothermal post-treatment step. The uniform distribution of MoS 2 on one-dimensional SnO 2 -CNF can effectively establish a layered three-dimensional structure. So that the prepared MoS 2 coated SnO 2 -CNF composite material has higher surface area and more active sites to obtain better electrochemical performance. We constructed an electrochemical sensor within the composite material with enhanced performance to realize the simultaneous and highly sensitive detection of phenacetin and indomethacin for the first time. The sensor proves the linear ranges of 0.050-7200 μM and 0.05-500 μM respectively, and the detection limits were 0.016 μM and 0.013 μM. And the sensor has good anti-interference ability and stability, which also achieves good recovery rate in the actual sample detection .
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Affiliation(s)
- Weijuan Hu
- Shanghai University, Department of chemistry, CHINA
| | - Huan Lu
- Shanghai University, Department of chemistry, CHINA
| | | | - Li Li
- Shanghai University, Department of chemistry, CHINA
| | - Yaping Ding
- Shanghai University, Department of Chemistry, 99# ShangDa Road, 200444, Shanghai, CHINA
| | - Jiangxue An
- Shanghai University, Department of chemistry, CHINA
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22
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A comparative review on detection of Cocaine using hyphenated techniques. CHEMICAL PAPERS 2022. [DOI: 10.1007/s11696-021-02039-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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23
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Evans-Nguyen K, Stelmack AR, Clowser PC, Holtz JM, Mulligan CC. FIELDABLE MASS SPECTROMETRY FOR FORENSIC SCIENCE, HOMELAND SECURITY, AND DEFENSE APPLICATIONS. MASS SPECTROMETRY REVIEWS 2021; 40:628-646. [PMID: 32722885 DOI: 10.1002/mas.21646] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Accepted: 02/24/2020] [Indexed: 05/26/2023]
Abstract
Mass spectrometry is commonly used in forensic chemistry laboratories for sensitive, definitive analysis. There have been significant efforts to bring mass spectrometry analysis on-site through the development of ruggedized, fieldable instruments. Testing samples in the field is of particular interest in forensic science, homeland security, and defense applications. In forensic chemistry, testing seized drugs in the field can significantly improve efficiencies in processing of related criminal cases. The screening of passengers and luggage at transportation hubs is a critical need for homeland security for which mass spectrometry is well suited to provide definitive answers with low false positive rates. Mass spectrometry can yield reliable data for military personnel testing sites for potential chemical weapons release. To meet the needs of the forensic and security communities fieldable mass spectrometers based on membrane inlet systems and hybrid gas chromatography systems have been developed and commercialized. More recently developed ambient ionization mass spectrometry methods can eliminate the time, equipment, and expertise associated with sample preparation, and so are especially appealing for on-site analysis. We describe the development of fieldable mass spectrometry systems, with emphasis on commercially available systems that have been deployed for on-site analysis of seized drugs, chemical warfare agents, explosives, and other analytes of interest to the forensic and security communities. © 2020 John Wiley & Sons Ltd. Mass Spec Rev.
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Affiliation(s)
- Kenyon Evans-Nguyen
- Department of Chemistry, Biochemistry and Physics, University of Tampa, Tampa, FL
| | | | | | - Jessica M Holtz
- Department of Chemistry, Illinois State University, Normal, IL
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24
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Laurentino AOM, Solómon J, Tonietto BD, Cestonaro LV, Dos Santos NG, Piton YV, Izolan L, Marques D, Costa-Valle MT, Garcia SC, Sebben V, Dallegrave E, Schaefer PG, Barros EJ, Arbo MD, Leal MB. Levamisole, a cocaine cutting agent, induces acute and subchronic systemic alterations in Wistar rats. Toxicol Appl Pharmacol 2021; 426:115649. [PMID: 34273407 DOI: 10.1016/j.taap.2021.115649] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 06/14/2021] [Accepted: 07/09/2021] [Indexed: 12/31/2022]
Abstract
The use of the anthelmintic levamisole as a cocaine adulterant has been increasing worldwide. Complications caused by this association include systemic vasculitis, agranulocytosis, neutropenia, tissue necrosis, pulmonary hemorrhage, and renal injury. Data about toxicity of levamisole are scarce, therefore the aim of this study was to evaluate the acute and subchronic toxic effects of levamisole in rats. Male Wistar rats received saline or levamisole by intraperitoneal route at the doses of 12, 24 and 36 mg/kg in the acute toxicity test; and at 3, 6 and 12 mg/kg in the subchronic toxicity test. Toxicity was evaluated using behavioral, cognitive, renal, hematological, biochemical and histopathological parameters. Acute administration of levamisole caused behavioral and histopathological alterations. Subchronic administration caused behavioral, cognitive and hematological alterations (p < 0.0001 and p < 0.05, respectively), impairment of liver and kidney functions (p < 0.05), and changes of antioxidant defenses (p ≤ 0.0001). Both administrations produced toxic effects of clinical relevance, which make levamisole a dangerous cutting agent. Furthermore, the knowledge of these effects can contribute to the correct diagnosis and treatment of cocaine dependents with unusual systemic alterations.
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Affiliation(s)
- Ana Olívia Martins Laurentino
- Programa de Pós-Graduação em Ciências Biológicas, Farmacologia e Terapêutica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul (UFRGS), Rua Sarmento Leite, 500/305, 90050-170 Porto Alegre, Rio Grande do Sul, Brazil; Laboratório de Farmacologia e Toxicologia Neurocomportamental, Departamento de Farmacologia, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul (UFRGS), Rua Sarmento Leite, 500/305, 90050-170 Porto Alegre, Rio Grande do Sul, Brazil
| | - Janaína Solómon
- Laboratório de Farmacologia e Toxicologia Neurocomportamental, Departamento de Farmacologia, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul (UFRGS), Rua Sarmento Leite, 500/305, 90050-170 Porto Alegre, Rio Grande do Sul, Brazil
| | - Bruna Ducatti Tonietto
- Laboratório de Toxicologia (LATOX), Departamento de Análises, Faculdade de Farmácia - Anexo I, Universidade Federal do Rio Grande do Sul (UFRGS), Rua São Luis, 150/3° andar, 90620-170 Porto Alegre, Rio Grande do Sul, Brazil; Programa de Pós-Graduação em Ciências Farmacêuticas (PPGCF), Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul (UFRGS), Av. Ipiranga 2752/1° andar, 90610-000 Porto Alegre, Rio Grande do Sul, Brazil
| | - Larissa Vivan Cestonaro
- Laboratório de Toxicologia (LATOX), Departamento de Análises, Faculdade de Farmácia - Anexo I, Universidade Federal do Rio Grande do Sul (UFRGS), Rua São Luis, 150/3° andar, 90620-170 Porto Alegre, Rio Grande do Sul, Brazil; Programa de Pós-Graduação em Ciências Farmacêuticas (PPGCF), Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul (UFRGS), Av. Ipiranga 2752/1° andar, 90610-000 Porto Alegre, Rio Grande do Sul, Brazil
| | - Nícolas Guimarães Dos Santos
- Laboratório de Toxicologia (LATOX), Departamento de Análises, Faculdade de Farmácia - Anexo I, Universidade Federal do Rio Grande do Sul (UFRGS), Rua São Luis, 150/3° andar, 90620-170 Porto Alegre, Rio Grande do Sul, Brazil
| | - Yasmin Vendruscolo Piton
- Laboratório de Toxicologia (LATOX), Departamento de Análises, Faculdade de Farmácia - Anexo I, Universidade Federal do Rio Grande do Sul (UFRGS), Rua São Luis, 150/3° andar, 90620-170 Porto Alegre, Rio Grande do Sul, Brazil
| | - Lucas Izolan
- Programa de Pós-Graduação em Ciências Biológicas: Neurociências, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul (UFRGS), Rua Sarmento Leite, 500/209, 90046-900 Porto Alegre, Rio Grande do Sul, Brazil
| | - Douglas Marques
- Laboratório de Farmacologia e Toxicologia Neurocomportamental, Departamento de Farmacologia, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul (UFRGS), Rua Sarmento Leite, 500/305, 90050-170 Porto Alegre, Rio Grande do Sul, Brazil; Programa de Pós-Graduação em Ciências Biológicas: Neurociências, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul (UFRGS), Rua Sarmento Leite, 500/209, 90046-900 Porto Alegre, Rio Grande do Sul, Brazil
| | - Marina Tuerlinckx Costa-Valle
- Departamento de Farmacociências, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Rua Sarmento Leite, 245, 90050-170 Porto Alegre, Rio Grande do Sul, Brazil
| | - Solange Cristina Garcia
- Laboratório de Toxicologia (LATOX), Departamento de Análises, Faculdade de Farmácia - Anexo I, Universidade Federal do Rio Grande do Sul (UFRGS), Rua São Luis, 150/3° andar, 90620-170 Porto Alegre, Rio Grande do Sul, Brazil; Programa de Pós-Graduação em Ciências Farmacêuticas (PPGCF), Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul (UFRGS), Av. Ipiranga 2752/1° andar, 90610-000 Porto Alegre, Rio Grande do Sul, Brazil
| | - Viviane Sebben
- Centro de Informação Toxicológica, Av. Ipiranga, 5400, 90610-000 Porto Alegre, Rio Grande do Sul, Brazil
| | - Eliane Dallegrave
- Departamento de Farmacociências, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Rua Sarmento Leite, 245, 90050-170 Porto Alegre, Rio Grande do Sul, Brazil
| | - Pedro Guilherme Schaefer
- Faculdade de Medicina, Hospital de Clínicas de Porto Alegre, Universidade Federal do Rio Grande do Sul (UFRGS), R. Ramiro Barcelos, 2350, 90035-007 Porto Alegre, Rio Grande do Sul, Brazil
| | - Elvino José Barros
- Faculdade de Medicina, Hospital de Clínicas de Porto Alegre, Universidade Federal do Rio Grande do Sul (UFRGS), R. Ramiro Barcelos, 2350, 90035-007 Porto Alegre, Rio Grande do Sul, Brazil
| | - Marcelo Dutra Arbo
- Laboratório de Toxicologia (LATOX), Departamento de Análises, Faculdade de Farmácia - Anexo I, Universidade Federal do Rio Grande do Sul (UFRGS), Rua São Luis, 150/3° andar, 90620-170 Porto Alegre, Rio Grande do Sul, Brazil; Programa de Pós-Graduação em Ciências Farmacêuticas (PPGCF), Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul (UFRGS), Av. Ipiranga 2752/1° andar, 90610-000 Porto Alegre, Rio Grande do Sul, Brazil.
| | - Mirna Bainy Leal
- Programa de Pós-Graduação em Ciências Biológicas, Farmacologia e Terapêutica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul (UFRGS), Rua Sarmento Leite, 500/305, 90050-170 Porto Alegre, Rio Grande do Sul, Brazil; Laboratório de Farmacologia e Toxicologia Neurocomportamental, Departamento de Farmacologia, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul (UFRGS), Rua Sarmento Leite, 500/305, 90050-170 Porto Alegre, Rio Grande do Sul, Brazil; Programa de Pós-Graduação em Ciências Biológicas: Neurociências, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul (UFRGS), Rua Sarmento Leite, 500/209, 90046-900 Porto Alegre, Rio Grande do Sul, Brazil.
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25
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Cutting agents in cocaine: A temporal study of the period 2015-2017 in the Northern Region of Colombia. Forensic Sci Int 2021; 327:110911. [PMID: 34450541 DOI: 10.1016/j.forsciint.2021.110911] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Revised: 06/19/2021] [Accepted: 07/13/2021] [Indexed: 11/22/2022]
Abstract
Cocaine is a naturally occurring psychostimulant drug available worldwide. Drug trafficking networks adulterate pure cocaine with cutting agents to increase their earnings. This study presents a descriptive statistical analysis of the cutting agents found in 2118 cocaine samples that were seized in the Northern Region of Colombia (in the period 2015-2017). The data used in this study was drawn from the GC-MS analytical reports of the National Institute of Legal Medicine and Forensic Sciences -Colombia, Northern Region. Results showed diverse cutting agents in seized cocaine samples, from which the most commonly used are caffeine, phenacetin, lidocaine, imidazole and levamisole. In addition, cocaine samples showed different mixtures of the above cutting agents, predominantly caffeine/phenacetin and caffeine/lidocaine/phenacetin mixtures.
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26
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White CM, Browne T, Nafziger AN. Inherent Dangers of Using Non-US Food and Drug Administration-Approved Substances of Abuse. J Clin Pharmacol 2021; 61 Suppl 2:S129-S141. [PMID: 34396559 DOI: 10.1002/jcph.1860] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Accepted: 03/17/2021] [Indexed: 12/25/2022]
Abstract
Use of US Food and Drug Administration-approved substances of abuse has innate risks due to pharmacologic and pharmacokinetic properties of the medications, but the risk when using nonapproved drug products is much greater. Unbeknownst to the user, the dose of active ingredients in substances of abuse can vary substantially between different products because of manufacturing practices or improper storage. Even naturally occurring substances of abuse can have extensive dosage variability because of effects of the growing season and conditions, or differences in harvesting, storage, or manufacture of the finished products. Many illicit substances are adulterated, to make up for intentional underdosing or to enhance the effect of the intended active ingredient. These adulterants can be dangerous and produce direct cardiovascular, neurologic, hematologic, or dermatologic reactions or obscure adverse effects. Finally, an illicit substance can be contaminated or substituted for another one during its manufacture, leading to differences in adverse events, adverse event severity, or the drug interaction profile. Substances can be contaminated with microbes that induce infections or heavy metals that can damage organs or cause cancer. This milieu of undisclosed substances can also induce drug interactions. For reasons that are discussed, individuals who use substances of abuse are at increased risk of morbidity or mortality if they develop coronavirus disease 2019. Health professionals who treat patients with acute, urgent events associated with substances of abuse, or those treating the chronic manifestations of addiction, need to appreciate the complex and variable composition of substances of abuse and their potential health effects.
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Affiliation(s)
- C Michael White
- Pharmacy Practice, University of Connecticut School of Pharmacy, Storrs, Connecticut, USA.,HOPES Research Group, UConn and Hartford Hospital, Hartford, Connecticut, USA
| | - Thom Browne
- Rubicon Global Enterprises & Colombo Plan Secretariat, Huachuca City, Arizona, USA
| | - Anne N Nafziger
- Bertino Consulting, Schenectady, New York, USA.,Department of Pharmacy Practice, School of Pharmacy & Pharmaceutical Sciences, University at Buffalo, State University of New York, Buffalo, New York, USA
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27
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Chen YC, Hong SW, Wu HH, Wang YL, Chen YF. Rapid Formation of Nanoclusters for Detection of Drugs in Urine Using Surface-Enhanced Raman Spectroscopy. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:1789. [PMID: 34361175 PMCID: PMC8308440 DOI: 10.3390/nano11071789] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Revised: 07/01/2021] [Accepted: 07/07/2021] [Indexed: 02/08/2023]
Abstract
We developed a method based on surface-enhanced Raman spectroscopy (SERS) and a sample pretreatment process for rapid, sensitive, reproducible, multiplexed, and low-cost detection of illegal drugs in urine. The abuse of new psychoactive substances (NPS) has become an increasingly serious problem in many countries. However, immunoassay-based screening kits for NPS are usually not available because of the lack of corresponding antibodies. SERS has a great potential for rapid detection of NPS because it can simultaneously detect multiple kinds of drugs without the use of antibodies. To achieve highly sensitive SERS detection of drugs, sodium bromide was first employed to induce the rapid formation of Ag nanoclusters by aggregating silver nanoparticles (AgNPs) in the extracted sample solution. SERS measurements were performed immediately after the sample pretreatment without incubation. The three-dimensional SERS hot spots were believed to form significantly within the nanoclusters, providing strong SERS enhancement effects. The displacement of citrate molecules on the surfaces of the AgNPs by bromide ions helped increase the adsorption of drug molecules, increasing their areal density. We demonstrated the simultaneous detection of two kinds of NPS, methcathinone and 4-methylmethcathinone, in urine at a concentration as low as 0.01 ppm.
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Affiliation(s)
- Yun-Chu Chen
- Institute of Biophotonics, National Yang Ming Chiao Tung University, Taipei 112, Taiwan; (Y.-C.C.); (S.-W.H.); (H.-H.W.)
| | - Shang-Wen Hong
- Institute of Biophotonics, National Yang Ming Chiao Tung University, Taipei 112, Taiwan; (Y.-C.C.); (S.-W.H.); (H.-H.W.)
| | - Huang-Hesin Wu
- Institute of Biophotonics, National Yang Ming Chiao Tung University, Taipei 112, Taiwan; (Y.-C.C.); (S.-W.H.); (H.-H.W.)
| | - Yuh-Lin Wang
- Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei 106, Taiwan;
| | - Yih-Fan Chen
- Institute of Biophotonics, National Yang Ming Chiao Tung University, Taipei 112, Taiwan; (Y.-C.C.); (S.-W.H.); (H.-H.W.)
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28
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Solbeck P, Woodall KL, Martin TL. Strategic Decision-Making by a Forensic Toxicology Laboratory in Response to an Emerging NPS: Detection, Quantitation and Interpretation of Carfentanil in Death Investigations in Ontario, Canada, July 2017 to June 2018. J Anal Toxicol 2021; 45:813-819. [PMID: 34166495 DOI: 10.1093/jat/bkab079] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 06/15/2021] [Accepted: 06/24/2021] [Indexed: 11/12/2022] Open
Abstract
The proliferation of novel psychoactive substances (NPS) and the current opioid epidemic creates challenges for a toxicology laboratory. Methods capable of detecting and quantitating emerging compounds must be established despite limited information on toxicologically relevant concentrations. This paper will (i) describe how a publicly funded forensic laboratory reacted to the emergence of carfentanil as a public safety concern and (ii) contribute to the existing forensic literature by presenting a series of deaths involving carfentanil between July 2017 and June 2018. The Centre of Forensic Sciences is the primary provider of forensic toxicology testing in medicolegal death investigations in the province of Ontario. When carfentanil was first identified in the illicit drug supply, routine screening methods used by this laboratory were not sufficiently sensitive to detect the drug at concentrations expected in blood samples. Previously validated, multi-target liquid chromatography-tandem mass spectrometry (LC-MS-MS) quantitative methods already in use by the laboratory did show improved detectability for carfentanil. Thus, an existing LC-MS-MS method was adapted to include carfentanil, achieving improved sensitivity while also providing quantitation in suspected drug-related deaths. This approach had the added benefit that the LC-MS-MS method selected for modification was used in all death investigations requiring toxicology analysis in Ontario, thereby providing an opportunity for surveillance. Using this method, 4,953 cases were analyzed with carfentanil detected at a concentration greater than the limit of detection (0.05 ng/mL) in 160 decedents. Postmortem blood carfentanil concentrations ranged from less than 0.1 to 9.2 ng/mL. Of the 160 carfentanil-positive cases, 156 were classified as either mixed drug toxicity or carfentanil overdose. The approach described enabled this laboratory to efficiently implement a quantitative test for carfentanil in all death investigations, providing a useful template for modifying existing methods when a new psychoactive substance becomes available in the population.
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Affiliation(s)
- Patricia Solbeck
- Quality Assurance Unit, Centre of Forensic Sciences, 25 Morton Shulman Ave, Toronto, ON M3M 0B1, Canada
| | - Karen L Woodall
- Toxicology Section, Centre of Forensic Sciences, 25 Morton Shulman Ave, Toronto, ON M3M 0B1, Canada.,Forensic Science Program, University of Toronto (Mississauga), Mississauga, ON L5L 1C6, Canada
| | - Teri L Martin
- Laboratory Services Section, Centre of Forensic Sciences, 25 Morton Shulman Ave, Toronto, ON M3M 0B1, Canada
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29
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Identifying Cocaine Adulteration in the Unregulated Drug Supply in British Columbia, Canada. CANADIAN JOURNAL OF ADDICTION 2021. [DOI: 10.1097/cxa.0000000000000112] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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30
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Rocha RG, Ribeiro JS, Santana MHP, Richter EM, Muñoz RAA. 3D-printing for forensic chemistry: voltammetric determination of cocaine on additively manufactured graphene-polylactic acid electrodes. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2021; 13:1788-1794. [PMID: 33885677 DOI: 10.1039/d1ay00181g] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Cocaine is probably one of the most trafficked illicit drugs in the world. For this reason, police forces require fast, selective, and sensitive methods for cocaine detection at crime scenes. Taking benefit of additive manufacturing, we demonstrate that 3D-printed graphene-polylactic acid (G-PLA) electrodes using the affordable fused deposition modelling technique can identify and quantify cocaine in seized drugs. The detection of cocaine based on its electrochemical oxidation on such electrodes was dramatically improved after an electrochemical surface treatment that generates reduced graphene oxide (anodic followed by a cathodic treatment). Square-wave voltammetric determination of cocaine was achieved in the concentration range between 20 and 100 μmol L-1, with a detection limit of 6 μmol L-1, and free from the interference of paracetamol, caffeine, phenacetin, lidocaine, benzocaine and levamisole, which are common adulterants found in seized drugs. The analytical characteristics obtained using 3D-printed G-PLA electrodes were comparable with those of previously reported electrochemical sensors, but presented the inherent advantages of the 3D-printing technology that enables low-cost, reproducible, and large-scale production of such electrodes in remote areas combined with the use of an environmentally-friendly biopolymer.
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Affiliation(s)
- Raquel G Rocha
- Institute of Chemistry, Federal University of Uberlândia, 38408-100 Uberlândia, MG, Brazil.
| | - Julia S Ribeiro
- Institute of Chemistry, Federal University of Uberlândia, 38408-100 Uberlândia, MG, Brazil.
| | - Mário H P Santana
- Unidade Técnico-Científica, Superintendência Regional da Polícia Federal em MG, 38408-680, Uberlândia, Minas Gerais, Brazil
| | - Eduardo M Richter
- Institute of Chemistry, Federal University of Uberlândia, 38408-100 Uberlândia, MG, Brazil.
| | - Rodrigo A A Muñoz
- Institute of Chemistry, Federal University of Uberlândia, 38408-100 Uberlândia, MG, Brazil.
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31
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Midthun KM, Nelson LS, Logan BK. Levamisole-a Toxic Adulterant in Illicit Drug Preparations: a Review. Ther Drug Monit 2021; 43:221-228. [PMID: 33298746 DOI: 10.1097/ftd.0000000000000851] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Accepted: 11/10/2020] [Indexed: 02/06/2023]
Abstract
ABSTRACT Discovered in the 1960s, the common anthelminthic levamisole has seen widespread use in veterinary applications. Its use rapidly expanded thereafter to include human medical treatments for a variety of acute and chronic disorders. Because of reports of severe adverse effects, the US Food and Drug Administration withdrew levamisole's approval for human use in 2000; however, medical options outside the United States and illicit options worldwide allow continued accessibility to levamisole. The compound is rapidly metabolized in the body, with at least 2 known active metabolites. Levamisole has a broad range of immunomodulatory effects, including both stimulatory and inhibitory effects on immune responses. It is generally well tolerated at therapeutic concentrations, although a variety of autoimmune-related adverse effects have been reported, including agranulocytosis, leukopenia, purpura, and visible necrotized skin tissue. Individuals with levamisole-compromised immune systems are more susceptible to infections, including COVID-19. Since the early 2000's, levamisole has been frequently used as an adulterating agent in illicit street drugs, especially cocaine, fentanyl, and heroin. Although its prevalence has varied over time and geographically, levamisole has been detected in up to 79% of the street supply of cocaine at levels up to 74% by weight. Its presence in illicit drug markets also raises concern over the potential for exposure of children and neonates, although this is supported by only limited anecdotal evidence. Levamisole is not currently included in routine drug testing panels, although a variety of confirmatory testing techniques exist across a range of antemortem and postmortem specimen options. Because of its varying presence in illicit drug markets, both the medical and forensic communities need to be aware of levamisole and its potential impact on toxicological investigations.
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Affiliation(s)
| | - Lewis S Nelson
- Department of Emergency Medicine, Rutgers New Jersey Medical School, Newark, New Jersey; and
| | - Barry K Logan
- NMS Labs, Horsham, Pennsylvania
- Center for Forensic Science Research and Education (CFSRE) at the Fredric Rieders Family Foundation, Willow Grove, Pennsylvania
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32
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Di Candia D, Boracchi M, Muccino E, Gentile G, Zoja R. The Lethal Cutting: An Unexpected Cause of Death. J Anal Toxicol 2021; 46:e28-e35. [PMID: 33417700 DOI: 10.1093/jat/bkab006] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 12/23/2020] [Accepted: 01/08/2021] [Indexed: 11/12/2022] Open
Abstract
Cocaine is among the illicit substances most frequently implicated in deaths related to the use of drugs of abuse both worldwide and in Italy. Cutting agents involved in the adulterations of this substance are many and the process of lacing can take place at various stages of the production of the drug. In this Report we are discussing the case of a 27-year-old woman found death next to her car in a wooded area in the suburban area of Milan. On the crime scene, several specimens of white powder were collected and subsequently analyzed via Q-Exactive Orbitrap with a HPLC system and LC/MS-MS analysis along with biological matrices sampled during autopsy examination. The toxicological analysis revealed that the death could be ascribed to a lethal dose of methomyl, a carbamide pesticide used as cutting agent for cocaine. According to Literature, this is the first time that this substance is used as an adulterant.
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Affiliation(s)
- Domenico Di Candia
- Dipartimento di Scienze Biomediche per la Salute, Sezione di Medicina Legale e delle Assicurazioni, Università degli Studi di Milano, Via L. Mangiagalli 37, 20133 Milano, Italy
| | - Michele Boracchi
- Dipartimento di Scienze Biomediche per la Salute, Sezione di Medicina Legale e delle Assicurazioni, Università degli Studi di Milano, Via L. Mangiagalli 37, 20133 Milano, Italy
| | - Enrico Muccino
- Dipartimento di Scienze Biomediche per la Salute, Sezione di Medicina Legale e delle Assicurazioni, Università degli Studi di Milano, Via L. Mangiagalli 37, 20133 Milano, Italy
| | - Guendalina Gentile
- Dipartimento di Scienze Biomediche per la Salute, Sezione di Medicina Legale e delle Assicurazioni, Università degli Studi di Milano, Via L. Mangiagalli 37, 20133 Milano, Italy
| | - Riccardo Zoja
- Dipartimento di Scienze Biomediche per la Salute, Sezione di Medicina Legale e delle Assicurazioni, Università degli Studi di Milano, Via L. Mangiagalli 37, 20133 Milano, Italy
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33
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Grothe RA, Lobato A, Mounssef B, Tasić N, Braga AAC, Maldaner AO, Aldous L, Paixão TRLC, Gonçalves LM. Electroanalytical profiling of cocaine samples by means of an electropolymerized molecularly imprinted polymer using benzocaine as the template molecule. Analyst 2021; 146:1747-1759. [DOI: 10.1039/d0an02274h] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Cocaine samples were ‘finger-printed’ using e-MIPs, constructed on the surface of portable SPCEs. The SWV data with suitable chemometric analysis provides valuable information about the drugs’ provenience which is crucial to tackle drug traffic.
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Affiliation(s)
- Renata A. Grothe
- Departamento de Química Fundamental
- Instituto de Química
- Universidade de São Paulo (USP)
- São Paulo – SP
- Brazil
| | - Alnilan Lobato
- Departamento de Química Fundamental
- Instituto de Química
- Universidade de São Paulo (USP)
- São Paulo – SP
- Brazil
| | - Bassim Mounssef
- Departamento de Química Fundamental
- Instituto de Química
- Universidade de São Paulo (USP)
- São Paulo – SP
- Brazil
| | - Nikola Tasić
- Departamento de Química Fundamental
- Instituto de Química
- Universidade de São Paulo (USP)
- São Paulo – SP
- Brazil
| | - Ataualpa A. C. Braga
- Departamento de Química Fundamental
- Instituto de Química
- Universidade de São Paulo (USP)
- São Paulo – SP
- Brazil
| | - Adriano O. Maldaner
- Instituto Nacional de Criminalística
- Polícia Federal Brasileira (PFB)
- Asa Sul, Brasília – DF
- Brazil
| | - Leigh Aldous
- Department of Chemistry
- King's College of London
- London
- UK
| | - Thiago R. L. C. Paixão
- Departamento de Química Fundamental
- Instituto de Química
- Universidade de São Paulo (USP)
- São Paulo – SP
- Brazil
| | - Luís Moreira Gonçalves
- Departamento de Química Fundamental
- Instituto de Química
- Universidade de São Paulo (USP)
- São Paulo – SP
- Brazil
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34
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Fregonese M, Albino A, Covino C, Gili A, Bacci M, Nicoletti A, Gambelunghe C. Drug Checking as Strategy for Harm Reduction in Recreational Contests: Evaluation of Two Different Drug Analysis Methodologies. Front Psychiatry 2021; 12:596895. [PMID: 33692707 PMCID: PMC7938318 DOI: 10.3389/fpsyt.2021.596895] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Accepted: 01/05/2021] [Indexed: 11/13/2022] Open
Abstract
Introduction: Drug checking as a part of drug harm-reduction strategies represents an essential aspect of public health policies. It focuses on rapid identification of drugs that individuals intend to use during night events, in order to implement health-protective behaviors. Chemical drug analysis techniques vary considerably, from simple colorimetric reagents to advanced forensic methods such as gas chromatography/mass spectrometry (GC/MS). Materials and Methods: In 2019, drug-check services were offered at some night events in Umbria (Central Italy). One hundred and twenty attendees directly delivered unidentified substances to a harm-reduction worker, who collected a few milligrams of the substances on ceramic plates and added a drop of colorimetric reagent. Multiple reagents were used to increase the diagnostic capacity of a substance, which may react with a specific drug or a few drugs. Later, a fraction of the samples was analyzed by GC/MS. The concordance of the results obtained using these two methodologies and the intended behaviors of consumers after being informed of the test result was evaluated. Results: We analyzed 120 samples by colorimetric test: 32 MDMA, 25 ketamine, 10 amphetamine, 11 cocaine, 8 heroin, and 4 LSD samples. The results were inconclusive for 29 samples. The GS/MS analysis confirmed MDMA in 84%, ketamine in 78%, amphetamine in 91%, cocaine in 92%, heroin in 88%, and LSD in 100% of the samples. The results of samples with inconclusive results were as follows: 2, MDMA; 7, ketamine; 2, amphetamine; 2, cocaine; 2, heroin; 2, mephedrone; 6, mixes; 1, debris; and 5, adulterants as the main component. Twenty-one of 29 participants reported that they had no intention of consuming the unidentified substance. Discussion: The high percentage of individuals who claimed no intention of consuming the unidentified drugs indicates that drug checking is viable as a part of drug harm-reduction strategies. Overall, colorimetric reagents showed a good performance with regard to samples being unadulterated (LSD) or minimal in quantity, but failed to identify mixtures of substances and the adulterants present in them. Therefore, the use of more discriminatory on-site methods such as Raman or infrared spectrometry is strongly recommended.
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Affiliation(s)
| | - Andrea Albino
- Harm Reduction Services, Cooperative "Borgorete", Perugia, Italy
| | - Claudia Covino
- Local Health Unit, USL Umbria 1, Ser.T Perugia, Ospedale S. Maria della Misericordia, Perugia, Italy
| | - Alessio Gili
- Hygiene and Public Health Section, Department of Medicine and Surgery, University of Perugia, Perugia, Italy
| | - Mauro Bacci
- Forensic Medicine, Forensic Science and Sports Medicine Section, Department of Medicine and Surgery, University of Perugia, Perugia, Italy
| | - Alessia Nicoletti
- Forensic Medicine, Forensic Science and Sports Medicine Section, Department of Medicine and Surgery, University of Perugia, Perugia, Italy
| | - Cristiana Gambelunghe
- Forensic Medicine, Forensic Science and Sports Medicine Section, Department of Medicine and Surgery, University of Perugia, Perugia, Italy
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35
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Truta F, Florea A, Cernat A, Tertis M, Hosu O, de Wael K, Cristea C. Tackling the Problem of Sensing Commonly Abused Drugs Through Nanomaterials and (Bio)Recognition Approaches. Front Chem 2020; 8:561638. [PMID: 33330355 PMCID: PMC7672198 DOI: 10.3389/fchem.2020.561638] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Accepted: 08/26/2020] [Indexed: 11/26/2022] Open
Abstract
We summarize herein the literature in the last decade, involving the use of nanomaterials and various (bio)recognition elements, such as antibodies, aptamers and molecularly imprinted polymers, for the development of sensitive and selective (bio)sensors for illicit drugs with a focus on electrochemical transduction systems. The use and abuse of illicit drugs remains an increasing challenge for worldwide authorities and, therefore, it is important to have accurate methods to detect them in seized samples, biological fluids and wastewaters. They are recently classified as the latest group of “emerging pollutants,” as their consumption has increased tremendously in recent years. Nanomaterials, antibodies, aptamers and molecularly imprinted polymers have gained much attention over the last decade in the development of (bio)sensors for a myriad of applications. The applicability of these (nano)materials, functionalized or not, has significantly increased, and are therefore highly suitable for use in the detection of drugs. Lately, such functionalized nanoscale materials have assisted in the detection of illicit drugs fingerprints, providing large surface area, functional groups and unique properties that facilitate sensitive and selective sensing. The review discusses the types of commonly abused drugs and their toxicological implications, classification of functionalized nanomaterials (graphene, carbon nanotubes), their fabrication, and their application on real samples in different fields of forensic science. Biosensors for drugs of abuse from the last decade's literature are then exemplified. It also offers insights into the prospects and challenges of bringing the functionalized nanobased technology to the end user in the laboratories or in-field.
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Affiliation(s)
- Florina Truta
- Department of Analytical Chemistry, "Iuliu Haţieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Anca Florea
- Department of Analytical Chemistry, "Iuliu Haţieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Andreea Cernat
- Department of Analytical Chemistry, "Iuliu Haţieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Mihaela Tertis
- Department of Analytical Chemistry, "Iuliu Haţieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Oana Hosu
- Department of Analytical Chemistry, "Iuliu Haţieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Karolien de Wael
- Antwerp X-ray Analysis, Electrochemistry and Speciation Research Group, University of Antwerp, Antwerp, Belgium.,NANOlab Center of Excellence, University of Antwerp, Antwerp, Belgium
| | - Cecilia Cristea
- Department of Analytical Chemistry, "Iuliu Haţieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
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36
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Duan Y, Wang A, Ding Y, Li L, Duan D, Lin J, Yu C, Liu J. Fabrication of poly-sulfosalicylic acid film decorated pure carbon fiber as electrochemical sensing platform for detection of theophylline. J Pharm Biomed Anal 2020; 192:113663. [PMID: 33053505 DOI: 10.1016/j.jpba.2020.113663] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2020] [Revised: 06/24/2020] [Accepted: 09/26/2020] [Indexed: 10/23/2022]
Abstract
In this work, we integrated the superiority of good conductivity, large surface area of carbon fibers and the catalytic property, good biocompatibility of polymer sulfosalicylic acid to construct a novel electrochemical sensor to detect theophylline in drug analysis. The morphology of nanocomposite was characterized by scanning electron microscopy (SEM). The polymerization between monomers was observed by Fourier transform infrared spectroscopy (FTIR). The composite between carbon material and polymer was verified by Raman spectrum. Under the optimal experimental conditions, the concentration of theophylline (0.6∼137 μM) and the peak current value revealed a good linear relationship and the limit of detection as low as 0.2 μM. In addition, the proposed sensor exhibits repeatability, stability and ease of selectivity.
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Affiliation(s)
- Yingchun Duan
- Department of Chemistry, Shanghai University, Shanghai 200444, PR China
| | - Anqing Wang
- Department of Chemistry, Shanghai University, Shanghai 200444, PR China
| | - Yaping Ding
- Department of Chemistry, Shanghai University, Shanghai 200444, PR China; Shanghai Key Laboratory of High Temperature Superconductors, Shanghai University, Shanghai 200444, PR China.
| | - Li Li
- Department of Chemistry, Shanghai University, Shanghai 200444, PR China.
| | - Dingding Duan
- Department of Chemistry, Shanghai University, Shanghai 200444, PR China
| | - Jiaxin Lin
- Department of Chemistry, Shanghai University, Shanghai 200444, PR China
| | - Chenhong Yu
- Department of Chemistry, Shanghai University, Shanghai 200444, PR China
| | - Jiayifan Liu
- Department of Chemistry, Shanghai University, Shanghai 200444, PR China
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37
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A brief overview on the importance of analyzing drug adulterants in the treatment of non-fatal overdose and substance use disorder of street cocaine. Forensic Toxicol 2020. [DOI: 10.1007/s11419-020-00548-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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38
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Barreto DN, Ribeiro MM, Sudo JT, Richter EM, Muñoz RA, Silva SG. High-throughput screening of cocaine, adulterants, and diluents in seized samples using capillary electrophoresis with capacitively coupled contactless conductivity detection. Talanta 2020; 217:120987. [DOI: 10.1016/j.talanta.2020.120987] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 03/27/2020] [Accepted: 03/28/2020] [Indexed: 12/16/2022]
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39
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Mielczarek P, Silberring J, Smoluch M. MINIATURIZATION IN MASS SPECTROMETRY. MASS SPECTROMETRY REVIEWS 2020; 39:453-470. [PMID: 31793697 DOI: 10.1002/mas.21614] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Accepted: 11/14/2019] [Indexed: 06/10/2023]
Abstract
Expectations for continuous miniaturization in mass spectrometry are not declining for years. Portable instruments are highly welcome by the industry, science, space agencies, forensic laboratories, and many other units. All are striving for the small, cheap, and as good as possible instruments. This review describes the recent developments of miniature mass spectrometers and also provides selected applications where these devices are used. Upcoming perspectives of further development are also discussed. @ 2019 John Wiley & Sons Ltd. Mass Spec Rev.
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Affiliation(s)
- Przemyslaw Mielczarek
- Department of Biochemistry and Neurobiology, Faculty of Materials Science and Ceramics, AGH University of Science and Technology, Mickiewicza 30, 30-059, Krakow, Poland
- Laboratory of Proteomics and Mass Spectrometry, Maj Institute of Pharmacology, Polish Academy of Sciences, Smetna 12, 31-343, Krakow, Poland
| | - Jerzy Silberring
- Department of Biochemistry and Neurobiology, Faculty of Materials Science and Ceramics, AGH University of Science and Technology, Mickiewicza 30, 30-059, Krakow, Poland
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, Curie-Sklodowskiej St. 34, 41-819, Zabrze, Poland
| | - Marek Smoluch
- Department of Biochemistry and Neurobiology, Faculty of Materials Science and Ceramics, AGH University of Science and Technology, Mickiewicza 30, 30-059, Krakow, Poland
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40
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Fiorentin TR, Logan BK, Martin DM, Browne T, Rieders EF. Assessment of a portable quadrupole-based gas chromatography mass spectrometry for seized drug analysis. Forensic Sci Int 2020; 313:110342. [DOI: 10.1016/j.forsciint.2020.110342] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Revised: 05/10/2020] [Accepted: 05/14/2020] [Indexed: 10/24/2022]
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41
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Jones NS, Comparin JH. Interpol review of controlled substances 2016-2019. Forensic Sci Int Synerg 2020; 2:608-669. [PMID: 33385148 PMCID: PMC7770462 DOI: 10.1016/j.fsisyn.2020.01.019] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Accepted: 01/23/2020] [Indexed: 12/14/2022]
Abstract
This review paper covers the forensic-relevant literature in controlled substances from 2016 to 2019 as a part of the 19th Interpol International Forensic Science Managers Symposium. The review papers are also available at the Interpol website at: https://www.interpol.int/content/download/14458/file/Interpol%20Review%20Papers%202019.pdf.
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Affiliation(s)
- Nicole S. Jones
- RTI International, Applied Justice Research Division, Center for Forensic Sciences, 3040 E. Cornwallis Road, Research Triangle Park, NC, 22709-2194, USA
| | - Jeffrey H. Comparin
- United States Drug Enforcement Administration, Special Testing and Research Laboratory, USA
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42
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Ghosh C, Singh V, Grandy J, Pawliszyn J. Development and validation of a headspace needle-trap method for rapid quantitative estimation of butylated hydroxytoluene from cosmetics by hand-portable GC-MS. RSC Adv 2020. [DOI: 10.1039/c9ra08676e] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Butylated hydroxytoluene (BHT) is widely used as a stable and inexpensive antioxidant in skin care products.
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Affiliation(s)
| | - Varoon Singh
- Department of Chemistry
- University of Waterloo
- Canada
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43
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Singh VM, Browne T, Montgomery J. The Emerging Role of Toxic Adulterants in Street Drugs in the US Illicit Opioid Crisis. Public Health Rep 2019; 135:6-10. [PMID: 31738861 DOI: 10.1177/0033354919887741] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Affiliation(s)
- Vanila M Singh
- Office of the Assistant Secretary for Health, US Department of Health and Human Services, Washington, DC, USA.,Department of Anesthesiology, Perioperative and Pain Medicine, School of Medicine, Stanford University, Stanford, CA, USA
| | - Thom Browne
- Colombo Plan Secretariat, Colombo, Sri Lanka
| | - Joshua Montgomery
- Office of the Assistant Secretary for Health, US Department of Health and Human Services, Washington, DC, USA
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44
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Matrix effect-free on-line pass-through cleanup procedure for the fast determination of local anesthetic drug by LC-MS/MS. J Chromatogr B Analyt Technol Biomed Life Sci 2019; 1130-1131:121831. [DOI: 10.1016/j.jchromb.2019.121831] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 10/08/2019] [Accepted: 10/11/2019] [Indexed: 11/17/2022]
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