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Elboraie MZ, Elbashir AA, Eid EEM, Aboul-Enein HY. Dispersive solid-phase extraction for simultaneous determination of four amphetamines drugs in urine using gas chromatography–mass spectrometry. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2021. [DOI: 10.1007/s13738-021-02339-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Delove Tegladza I, Qi T, Chen T, Alorku K, Tang S, Shen W, Kong D, Yuan A, Liu J, Lee HK. Direct immersion single-drop microextraction of semi-volatile organic compounds in environmental samples: A review. JOURNAL OF HAZARDOUS MATERIALS 2020; 393:122403. [PMID: 32126428 DOI: 10.1016/j.jhazmat.2020.122403] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2019] [Revised: 02/20/2020] [Accepted: 02/23/2020] [Indexed: 06/10/2023]
Abstract
Single-drop microextraction (SDME) techniques are efficient approaches to pretreatment of aqueous samples. The main advantage of SDME lies in the miniaturization of the solvent extraction process, minimizing the hazards associated with the use of toxic organic solvents. Thus, SDME techniques are cost-effective, and represent less harm to the environment, subscribing to green analytical chemistry principles. In practice, two main approaches can be used to perform SDME - direct immersion (DI)-SDME and headspace (HS)-SDME. Even though the DI-SDME has been shown to be quite effective for extraction and enrichment of various organic compounds, applications of DI-SDME are normally more suitable for moderately polar and non-polar semi-volatile organic compounds (SVOCs) using organic solvents which are immiscible with water. In this review, we present a historical overview and current advances in DI-SDME, including the common analytical tools which are usually coupled with DI-SDME. The review also focuses on applications concerning SVOCs in environmental samples. Currents trends in DI-SDME and possible future direction of the procedure are discussed.
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Affiliation(s)
- Isaac Delove Tegladza
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212003, Jiangsu Province, PR China
| | - Tong Qi
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212003, Jiangsu Province, PR China
| | - Tianyu Chen
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212003, Jiangsu Province, PR China
| | - Kingdom Alorku
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212003, Jiangsu Province, PR China
| | - Sheng Tang
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212003, Jiangsu Province, PR China.
| | - Wei Shen
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212003, Jiangsu Province, PR China.
| | - Dezhao Kong
- School of Grain Science and Technology, Jiangsu University of Science and Technology, Zhenjiang, 212003, Jiangsu Province, PR China
| | - Aihua Yuan
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212003, Jiangsu Province, PR China
| | - Jianfeng Liu
- Shanghai Waigaoqiao Shipbuilding Co., Ltd, Shanghai, 200137, PR China
| | - Hian Kee Lee
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543, Singapore.
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de Araújo GL, de Aguiar DVA, Pereira I, da Silva LC, Chaves AAR, Vaz BG. Polypyrrole-coated needle as an electrospray emitter for ambient mass spectrometry. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2020; 12:3235-3241. [PMID: 32930186 DOI: 10.1039/d0ay00652a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Polypyrrole (PPy) is a polymer widely used as an extraction phase due to its ability to perform intermolecular interactions with the analyte, such as acid-base, π-π, dipole-dipole, hydrophobic, and hydrogen bonding. In this manuscript, we report the coating of a stainless steel needle with a PPy film for analyte extraction and subsequent analysis by electrospray ionization mass spectrometry (ESI-MS) under ambient and open-air conditions. The method, named PPy-ESI-MS, was optimized for analysis of 3,4-methylenedioxyamphetamine (MDA) and 3,4-methylenedioxymethamphetamine (MDMA) in synthetic urine. Seven cycles of electrodeposition of the PPy film onto the needle surface, sample at pH 8, and 40 min of extraction of analytes were determined as the best analysis conditions. The analytical performance of PPy-ESI-MS was evaluated for MDA and MDMA compounds. Analytical curves were obtained with R2 > 0.98. Limits of detection (LODs) and limits of quantification (LOQs) were determined as 20 μg L-1 and 70 μg L-1 for MDA and as 25 μg L-1 and 80 μg L-1 for MDMA, respectively. Values of precision were below 17%, and values of accuracy below 5%. The apparent recoveries ranged between 84.5% and 111.3%. In addition, the PPy-ESI-MS method was applied for the analysis of sarcosine in synthetic urine in order to evaluate the performance of the method for another class of compounds. The calibration curve was obtained with R2 > 0.98, along with LOD and LOQ of 30 μg L-1 and 100 μg L-1, respectively. The precision and accuracy values were below 5% and 8%, respectively, and the apparent recoveries close to 100%. This work demonstrates the usefulness of combining an extraction phase with ESI-MS analysis under ambient conditions to determine different classes of small molecules in a complex sample.
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Affiliation(s)
- Giovanna L de Araújo
- Chemistry Institute, Federal University of Goiás, Goiânia, Goiás 74690-900, Brazil.
| | | | - Igor Pereira
- Chemistry Institute, Federal University of Goiás, Goiânia, Goiás 74690-900, Brazil.
| | - Lidya C da Silva
- Chemistry Institute, Federal University of Goiás, Goiânia, Goiás 74690-900, Brazil.
| | - Andrà A R Chaves
- Chemistry Institute, Federal University of Goiás, Goiânia, Goiás 74690-900, Brazil.
| | - Boniek G Vaz
- Chemistry Institute, Federal University of Goiás, Goiânia, Goiás 74690-900, Brazil.
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Chiavola A, Tedesco P, Boni MR. Fate of selected drugs in the wastewater treatment plants (WWTPs) for domestic sewage. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:1113-1123. [PMID: 28560628 DOI: 10.1007/s11356-017-9313-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2016] [Accepted: 05/18/2017] [Indexed: 05/27/2023]
Abstract
The wide diffusion of Emerging Organic Micropollutants (EOMs) in the environment is receiving increasing attention due to their potential toxicological effects on living organisms. So far, the Wastewater Treatment Plants (WWTPs) have not been designed with the purpose to remove these contaminants; therefore, they can represent the major source of release into the environment both through the effluent and the wasted sludge. The fate of EOMs in the WWTPs is still not completely known; further investigations are therefore needed to assess if it is possible to exploit the existing treatment units to reduce EOM concentrations or which processes must be implemented to this purpose. Among the wide class of EOMs, the present study focused on the following drugs of abuse: amphetamine (AM), methamphetamine (MET), 11-nor-Δ9-THC-9carboxy (THC-COOH) and benzoylecgonine (BEG). Presence and removal efficiency of these drugs in the activated sludge tank of a WWTP for domestic sewage was investigated through analyses at both full-scale and laboratory scale. Determinations conducted in the full-scale WWTP highlighted that, among the searched drugs, AM was found to be the most abundant in the influent and effluent of the biological oxidation tank, while 11-nor-Δ9-THC-9carboxy was present at the lowest concentration. Some removal took place in the units prior to the oxidation tank, although the main reduction was observed to occur in the biological oxidation reactor. All the drugs showed a wide variability of the measured concentrations during the week and the day. Taking into account results from both full-scale observations and batch tests, removals in the biological reactor were found within the following ranges: 33-84% for AM, 33-97% for MET, 33-57% for BEG and 29-83% for THC-COOH. These removals were due to a combination of adsorption and biodegradation mainly, while volatilization did not play a significant role. Other processes, e.g. hydrolysis, were likely to occur.
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Affiliation(s)
- Agostina Chiavola
- Department of Civil, Building and Environmental Engineering, Faculty of Civil and Industrial Engineering, Sapienza University of Rome, Via Eudossiana 18, 00184, Rome, Italy.
| | - Pierpaolo Tedesco
- Department of Civil, Building and Environmental Engineering, Faculty of Civil and Industrial Engineering, Sapienza University of Rome, Via Eudossiana 18, 00184, Rome, Italy
| | - Maria Rosaria Boni
- Department of Civil, Building and Environmental Engineering, Faculty of Civil and Industrial Engineering, Sapienza University of Rome, Via Eudossiana 18, 00184, Rome, Italy
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Cui P, Wang S. Application of microfluidic chip technology in pharmaceutical analysis: A review. J Pharm Anal 2018; 9:238-247. [PMID: 31452961 PMCID: PMC6704040 DOI: 10.1016/j.jpha.2018.12.001] [Citation(s) in RCA: 144] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Revised: 11/29/2018] [Accepted: 12/04/2018] [Indexed: 01/18/2023] Open
Abstract
The development of pharmaceutical analytical methods represents one of the most significant aspects of drug development. Recent advances in microfabrication and microfluidics could provide new approaches for drug analysis, including drug screening, active testing and the study of metabolism. Microfluidic chip technologies, such as lab-on-a-chip technology, three-dimensional (3D) cell culture, organs-on-chip and droplet techniques, have all been developed rapidly. Microfluidic chips coupled with various kinds of detection techniques are suitable for the high-throughput screening, detection and mechanistic study of drugs. This review highlights the latest (2010–2018) microfluidic technology for drug analysis and discusses the potential future development in this field.
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Affiliation(s)
- Ping Cui
- School of Pharmacy, Xi'an Jiaotong University Health Science Center, #76, Yanta West Road, Xi'an 710061, China.,Shaanxi Engineering Research Center of Cardiovascular Drugs Screening & Analysis, Xi'an 710061, China
| | - Sicen Wang
- School of Pharmacy, Xi'an Jiaotong University Health Science Center, #76, Yanta West Road, Xi'an 710061, China.,Shaanxi Engineering Research Center of Cardiovascular Drugs Screening & Analysis, Xi'an 710061, China
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Fernández N, Cabanillas LM, Olivera NM, Quiroga PN. Optimization and validation of simultaneous analyses of ecgonine, cocaine, and seven metabolites in human urine by gas chromatography-mass spectrometry using a one-step solid-phase extraction. Drug Test Anal 2018; 11:361-373. [PMID: 30468698 DOI: 10.1002/dta.2547] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Revised: 11/13/2018] [Accepted: 11/14/2018] [Indexed: 01/13/2023]
Abstract
The presence of ecgonine in urine has been proposed as an appropriate marker of cocaine use. Only a few methods have been published for their determination along with cocaine and the rest of its metabolites. Due to their high polarity and consequent solubility in water, these have low recoveries, which is why it is necessary to increase the sensitivity, by the formation of hydrochloric salts or multiderivatization of the analytes or by performing two solid-phase extractions (SPEs), considerably increasing the time and cost of the analysis. This work describes a fast and fully validated procedure for the simultaneous detection and quantification of ecgonine, ecgonine-methyl-ester, benzoylecgonine, nor-benzoylecgonine, m-hydroxybenzoylecgonine, cocaethylene, cocaine, norcocaine, and norcocaethylene in human urine (500 μL) using one SPE and simple derivatization. Separation and quantification were achieved by gas chromatography-electron ionization-mass spectrometry (GC-EI-MS) in selected-ion monitoring mode. Quantification was performed by the addition of deuterated analogs as internal standards. Calibration curves were linear in the adopted ranges, with determination coefficients higher than 0.99. The lower limits of quantification ranged from 2.5 to 10 ng/mL. The intra- and inter-day precision, calculated in terms of relative standard deviation, were 1.2%-14.9% and 1.8%-17.9%, respectively. The accuracy, in terms of relative error, was within a ± 16.4% interval. Extraction efficiency ranged from 84% to 103%. Compared with existing methods, the procedure described herein is fast, since only one SPE is required, and cost-effective. In addition, this method provides a high recovery for ecgonine, resulting in a better alternative to the previously published methods.
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Affiliation(s)
- Nicolás Fernández
- Facultad de Farmacia y Bioquímica, Cátedra de Toxicología y Química Legal, Laboratorio de Asesoramiento Toxicológico Analítico (CENATOXA), Universidad de Buenos Aires, Junín 956 7mopiso (C1113AAD). Ciudad Autónoma de Buenos Aires (CABA), Buenos Aires, Argentina
| | - Laura Marina Cabanillas
- Facultad de Farmacia y Bioquímica, Cátedra de Toxicología y Química Legal, Laboratorio de Asesoramiento Toxicológico Analítico (CENATOXA), Universidad de Buenos Aires, Junín 956 7mopiso (C1113AAD). Ciudad Autónoma de Buenos Aires (CABA), Buenos Aires, Argentina
| | - Nancy Mónica Olivera
- Facultad de Farmacia y Bioquímica, Cátedra de Toxicología y Química Legal, Laboratorio de Asesoramiento Toxicológico Analítico (CENATOXA), Universidad de Buenos Aires, Junín 956 7mopiso (C1113AAD). Ciudad Autónoma de Buenos Aires (CABA), Buenos Aires, Argentina
| | - Patricia Noemí Quiroga
- Facultad de Farmacia y Bioquímica, Cátedra de Toxicología y Química Legal, Laboratorio de Asesoramiento Toxicológico Analítico (CENATOXA), Universidad de Buenos Aires, Junín 956 7mopiso (C1113AAD). Ciudad Autónoma de Buenos Aires (CABA), Buenos Aires, Argentina
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Li J, Zhang L, Cheng X, Zhang L, Shen B, Qing C, Fan G. Determination of d-amphetamine and diphenhydramine in beagle dog plasma by a 96-well formatted liquid-liquid extraction and capillary zone electrophoresis with field-amplified sample stacking. J Pharm Biomed Anal 2018; 156:263-271. [PMID: 29729640 DOI: 10.1016/j.jpba.2018.04.040] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Revised: 04/23/2018] [Accepted: 04/24/2018] [Indexed: 10/17/2022]
Abstract
This paper describes a method for quantification of d-amphetamine and diphenhydramine in beagle dog plasma by organic solvent field-amplified sample stacking (FASS)-capillary zone electrophoresis (CZE), using amlodipine as the internal standard. The separation was carried out at 25 °C in a 40.2 cm × 75 μm fused-silica capillary with an applied voltage of 20 kV using 25 mM phosphate-18.75 mM borate (pH 3.5). The detection wavelength was 200 nm. Clean-up and preconcentration of plasma biosamples were developed by 96-well formatted liquid- liquid extraction (LLE). In this study, the peak areas of d-amphetamine, diphenhydramine and amlodipine in the plasma sample increased by the factor of 48, 67 and 43 compared to the CZE without sample stacking. The method was suitably validated with respect to stability, specificity, linearity, lower limit of quantitation, accuracy, precision and extraction recovery. The calibration graph was linear from 2 to 500 ng/ml for d-amphetamine and 2-5000 ng/ml for diphenhydramine. All the validation data were within the required limits. Compared with the LC/MS/MS method that we previously established, there was no significant difference between the two methods in validation characteristics, except the LLOQs. The developed method was successfully applied to the evaluation of pharmacokinetic study of the Quick-Acting Anti-Motion Capsules (QAAMC) in beagle dogs.
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Affiliation(s)
- Ji Li
- Department of Clinical Pharmacy, Shanghai General Hospital, School of Medicine, Shanghai Jiaotong University, No. 100 Haining Road, Shanghai 200025, PR China; School of Pharmaceutical Sciences and Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, No. 1168, Chunrong Road, Kunming, Yunnan 650500, PR China
| | - Lingli Zhang
- Shanghai Key Laboratory for Pharmaceutical Metabolite Research, No. 325 Guohe Road, Shanghai 200433, PR China; Innovation Medicines and Early Clinical Development Asia, AstraZeneca, No. 199 Liangjing Road, Zhangjiang Hi-Tech Park, Shanghai, 201203, PR China
| | - Xianliang Cheng
- School of Pharmaceutical Sciences and Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, No. 1168, Chunrong Road, Kunming, Yunnan 650500, PR China
| | - Lei Zhang
- School of Pharmaceutical Sciences and Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, No. 1168, Chunrong Road, Kunming, Yunnan 650500, PR China; Department of Gynecologic Oncology, The Third Affiliated Hospital of Kunming Medical University, No. 519, Kunzhou Road, Kunming, Yunnan 650118, PR China
| | - Baochun Shen
- School of Pharmaceutical Sciences and Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, No. 1168, Chunrong Road, Kunming, Yunnan 650500, PR China.
| | - Chen Qing
- School of Pharmaceutical Sciences and Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, No. 1168, Chunrong Road, Kunming, Yunnan 650500, PR China.
| | - Guorong Fan
- Department of Clinical Pharmacy, Shanghai General Hospital, School of Medicine, Shanghai Jiaotong University, No. 100 Haining Road, Shanghai 200025, PR China; Shanghai Key Laboratory for Pharmaceutical Metabolite Research, No. 325 Guohe Road, Shanghai 200433, PR China; Laboratory of Drug Metabolism & Pharmacokinetics, School of Medicine, Tongji University, No. 1239 Siping Road, Shanghai 200092, PR China.
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Woźniak MK, Wiergowski M, Aszyk J, Kubica P, Namieśnik J, Biziuk M. Application of gas chromatography-tandem mass spectrometry for the determination of amphetamine-type stimulants in blood and urine. J Pharm Biomed Anal 2017; 148:58-64. [PMID: 28957720 DOI: 10.1016/j.jpba.2017.09.020] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Revised: 09/13/2017] [Accepted: 09/15/2017] [Indexed: 11/24/2022]
Abstract
Amphetamine, methamphetamine, phentermine, 3,4-methylenedioxyamphetamine (MDA), 3,4-methylenedioxymethamphetamine (MDMA), and 3,4-methylenedioxy-N-ethylamphetamine (MDEA) are the most popular amphetamine-type stimulants. The use of these substances is a serious societal problem worldwide. In this study, a method based on gas chromatography-tandem mass spectrometry (GC-MS/MS) with simple and rapid liquid-liquid extraction (LLE) and derivatization was developed and validated for the simultaneous determination of the six aforementioned amphetamine derivatives in blood and urine. The detection of all compounds was based on multiple reaction monitoring (MRM) transitions. The most important advantage of the method is the minimal sample volume (as low as 200μL) required for the extraction procedure. The validation parameters, i.e., the recovery (90.5-104%), inter-day accuracy (94.2-109.1%) and precision (0.5-5.8%), showed the repeatability and sensitivity of the method for both matrices and indicated that the proposed procedure fulfils internationally established acceptance criteria for bioanalytical methods The procedure was successfully applied to the analysis of real blood and urine samples examined in 22 forensic toxicological cases. To the best of our knowledge, this is the first work presenting the use of GC-MS/MS for the determination of amphetamine-type stimulants in blood and urine. In view of the low limits of detection (0.09-0.81ng/mL), limits of quantification (0.26-2.4ng/mL), and high selectivity, the procedure can be applied for drug monitoring in both fatal and non-fatal intoxication cases in routine toxicology analysis.
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Affiliation(s)
- Mateusz Kacper Woźniak
- Department of Analytical Chemistry, Faculty of Chemistry, Gdańsk University of Technology, 11/12 Narutowicza Str., Gdańsk 80-233, Poland.
| | - Marek Wiergowski
- Department of Forensic Medicine, Faculty of Medicine, Medical University of Gdańsk, 3A Marii Skłodowskiej-Curie Str., Gdańsk 80-210, Poland
| | - Justyna Aszyk
- Department of Analytical Chemistry, Faculty of Chemistry, Gdańsk University of Technology, 11/12 Narutowicza Str., Gdańsk 80-233, Poland
| | - Paweł Kubica
- Department of Analytical Chemistry, Faculty of Chemistry, Gdańsk University of Technology, 11/12 Narutowicza Str., Gdańsk 80-233, Poland
| | - Jacek Namieśnik
- Department of Analytical Chemistry, Faculty of Chemistry, Gdańsk University of Technology, 11/12 Narutowicza Str., Gdańsk 80-233, Poland
| | - Marek Biziuk
- Department of Analytical Chemistry, Faculty of Chemistry, Gdańsk University of Technology, 11/12 Narutowicza Str., Gdańsk 80-233, Poland
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Martins AF, Dos Santos JB, Todeschini BH, Saldanha LF, da Silva DS, Reichert JF, Souza DM. Occurrence of cocaine and metabolites in hospital effluent - A risk evaluation and development of a HPLC method using DLLME. CHEMOSPHERE 2017; 170:176-182. [PMID: 27988453 DOI: 10.1016/j.chemosphere.2016.12.019] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Revised: 12/02/2016] [Accepted: 12/04/2016] [Indexed: 06/06/2023]
Abstract
A fast method for the determination of cocaine and its metabolites in hospital effluent samples was worked out by using liquid chromatography with the aid of fluorescence and diode array detection. Solid phase extraction and dispersive liquid -liquid microextraction were employed during the sample preparation stage. The experiment was conducted by using Chromabond® C18 ec 6 ml/500 mg cartridges, with recoveries higher than 96.6%, 88.3%, 78.7%, and LOQm 0.15; 0.18 and 0.30 μg L-1 for cocaine, benzoylecgonine and anhydroecgonine respectively. In the case of DLLME, different chemical conditions and solvent combinations were tested to find the best settings for the microextraction: pH 9; addition of 0.3 mol L-1 NaCl; 150 μL extractor (chloroform) and 350 μL disperser (methanol). The recoveries for cocaine were as high as 98.3% with LOQm 0.3 μg L-1. After validation, these methods were applied to quantification of the analytes. While the concentration of the anhydroecgonine, (the main pyrolytic metabolite of cocaine), remained below the limit of detection, the range of concentrations of cocaine and benzoylecgonine determined were 0.4-4.9 μg L-1 and 0.9-8.6 μg L-1, respectively. The occurrence has a relatively median/high environmental impact. These concentration values suggest that a role is played by other sources of cocaine, probably related to transport, or handling and the consumption of the drug. The outcome is that cocaine can be quantified by using DLLME as well as SPE, however, DLLME offered clear benefits like simplicity, affordability, and speed, as well as only requiring a small volume of solvents and samples.
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Affiliation(s)
- Ayrton F Martins
- Chemistry Department, Federal University of Santa Maria, RS, Brazil.
| | | | | | | | | | | | - Darliana M Souza
- Chemistry Department, Federal University of Santa Maria, RS, Brazil
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10
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Understanding alterations on blood and biochemical parameters in athletes that use dietary supplements, steroids and illicit drugs. Toxicology 2017; 376:75-82. [DOI: 10.1016/j.tox.2016.05.019] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2015] [Revised: 05/19/2016] [Accepted: 05/24/2016] [Indexed: 12/20/2022]
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Gałęzowska G, Cieszynska-Semenowicz M, Okrągła E, Szychowska K, Wolska L. Progress in Analytical Techniques for Determination of Urine Components. SEPARATION AND PURIFICATION REVIEWS 2017. [DOI: 10.1080/15422119.2017.1281826] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Grażyna Gałęzowska
- Department of Environment Toxicology, Faculty of Health Science, Medical University of Gdansk, Gdansk, Poland
| | | | - Emilia Okrągła
- Department of Environment Toxicology, Faculty of Health Science, Medical University of Gdansk, Gdansk, Poland
| | - Katarzyna Szychowska
- Department of Environment Toxicology, Faculty of Health Science, Medical University of Gdansk, Gdansk, Poland
| | - Lidia Wolska
- Department of Environment Toxicology, Faculty of Health Science, Medical University of Gdansk, Gdansk, Poland
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12
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Rapid analysis of cocaine and metabolites in urine using microextraction in packed sorbent and GC/MS. Anal Bioanal Chem 2016; 409:2051-2063. [PMID: 28012112 DOI: 10.1007/s00216-016-0152-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2016] [Revised: 11/30/2016] [Accepted: 12/13/2016] [Indexed: 01/09/2023]
Abstract
Cocaine is still one of the most abused drugs worldwide and, as such, it is often screened for in driving-under-the-influence or workplace drug - testing scenarios. A large number of samples have usually to be processed in those situations, and this requires fast and simple extraction procedures for the detection and quantification of the drugs. The present work describes an ultrafast and fully validated procedure for the simultaneous detection and quantification of cocaine and its two main metabolites, ecgonine methyl ester and benzoylecgonine, in urine using microextraction by packed sorbent and GC-MS. A small sample volume (200 μL) was used, and a fast extraction procedure together with a microwave-assisted derivatization (800 W, 2 min) allowed the quantification of all analytes in a range of 25 to 1000 ng/mL (r 2 > 0.99). Inter-day precision revealed coefficients of variation (CVs) lower than 10% for all analytes at the tested concentration levels, with an accuracy within a ±7% interval, with the exception of EME's lowest calibrator (±17%). Intra-day CVs were lower than 15% at the studied concentration levels, with a mean relative error within a ±13% interval. Recoveries ranged from 14.5 to 37.2% (EME), 67.0 to 83.3% (cocaine), and 24.6 to 43.5% (BEG), allowing the limits of detection and quantification to be set at 25 ng/mL for all compounds. Graphical Abstract Schematized analysis of cocaine and metabolites in urine by MEPS- GC/MS.
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13
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Tang Y, Long F, Gu C, Wang C, Han S, He M. Reusable split-aptamer-based biosensor for rapid detection of cocaine in serum by using an all-fiber evanescent wave optical biosensing platform. Anal Chim Acta 2016; 933:182-8. [PMID: 27497011 DOI: 10.1016/j.aca.2016.05.021] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2016] [Revised: 05/11/2016] [Accepted: 05/12/2016] [Indexed: 01/28/2023]
Abstract
A rapid, facile, and sensitive assay of cocaine in biological fluids is important to prevent illegal abuse of drugs. A two-step structure-switching aptasensor has been developed for cocaine detection based on evanescent wave optical biosensing platform. In the proposed biosensing platform, two tailored aptamer probes were used to construct the molecular structure switching. In the existence of cocaine, two fragments of cocaine aptamer formed a three-way junction quickly, and the fluorophore group of one fragment was effectively quenched by the quencher group of the other one. The tail of the three-way junction hybridized with the cDNA sequences immobilized on the optical fiber biosensor. Fluorescence was excited by evanescent wave, and the fluorescence signal was proportional to cocaine concentration. Cocaine was detected in 450 s (300 s for incubation and 150 s for detection and regeneration) with a limit of detection (LOD) of 165.2 nM. The proposed aptasensor was evaluated in human serum samples, and it exhibited good recovery, precision, and accuracy without complicated sample pretreatments.
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Affiliation(s)
- Yunfei Tang
- State Key Joint Laboratory of ESPC, School of Environment, Tsinghua University, Beijing 100084, China
| | - Feng Long
- School of Environment and Natural Resources, Renmin University of China, Beijing 100872, China
| | - Chunmei Gu
- State Key Joint Laboratory of ESPC, School of Environment, Tsinghua University, Beijing 100084, China
| | - Cheng Wang
- State Key Joint Laboratory of ESPC, School of Environment, Tsinghua University, Beijing 100084, China
| | - Shitong Han
- State Key Joint Laboratory of ESPC, School of Environment, Tsinghua University, Beijing 100084, China
| | - Miao He
- State Key Joint Laboratory of ESPC, School of Environment, Tsinghua University, Beijing 100084, China.
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14
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Assessing cocaine abuse using LC-MS/MS measurements in biological specimens. Bioanalysis 2016; 7:1497-525. [PMID: 26168256 DOI: 10.4155/bio.15.72] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
Cocaine use is still a problem in today's world, and this has several implications on human activities. Indeed, important problems related to cocaine derive from its use in situations where concentration and focus skills are necessary, namely while driving and/or working. The need of analytical methods for drug analysis in specimens of biological origin for proper documentation of human exposure is increasing. While GC-MS-based procedures represented the state-of-the-art of analytical techniques a few years ago, there is a growing trend for their replacement by LC-MS/MS, which can be justified by the increased sensitivity presented by these new technologies. This paper will review recently published papers on the use of LC-MS/MS-based procedures for cocaine measurement in biological specimens.
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15
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Franco de Oliveira SCWDSE, Yonamine M. Measurement uncertainty for the determination of amphetamines in urine by liquid-phase microextraction and gas chromatography-mass spectrometry. Forensic Sci Int 2016; 265:81-8. [PMID: 26836147 DOI: 10.1016/j.forsciint.2016.01.012] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Revised: 01/08/2016] [Accepted: 01/11/2016] [Indexed: 11/25/2022]
Abstract
A gas chromatography-mass spectrometry method for the determination of amphetamines in urine samples by means of liquid-phase microextraction was validated, including calculation of measurement uncertainty. After extraction in the three-phase mode, acceptor phase was withdrawn from the fiber and the residue was derivatized with trifluoroacetic anhydride. The method showed to be very simple, rapid and it required a significantly low amount of organic solvent for extraction. The limits of detection were 10 and 20μg/L for amphetamine and methamphetamine, respectively. The calibration curves were linear over the specified range (20μg/L to 1400μg/L; r(2)>0.99). The method showed to be both precise and accurate and a relative combined uncertainty of 2% was calculated. In order of importance, the factors which were more determinant for the calculation of method uncertainty were: analyte concentration, sample volume, trueness and method precision.
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16
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Temerdashev AZ, Grigoriev AM, Rybalchenko IV. Narcotic substances of natural origin and methods of their determination. JOURNAL OF ANALYTICAL CHEMISTRY 2015. [DOI: 10.1134/s1061934816010135] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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17
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Kim J, Choi K, Chung DS. In-line coupling of single-drop microextraction with capillary electrophoresis-mass spectrometry. Anal Bioanal Chem 2015; 407:8745-52. [PMID: 26403239 DOI: 10.1007/s00216-015-9028-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2015] [Revised: 08/10/2015] [Accepted: 09/03/2015] [Indexed: 11/26/2022]
Abstract
Single-drop microextraction (SDME) was in-line coupled with capillary electrophoresis-mass spectrometry to provide sample cleanup and enrichment simultaneously. Since there is no outlet vial in a conventional capillary electrophoresis-electrospray ionization-mass spectrometry (CE-ESI-MS) configuration, it is not easy to hang a single drop in the capillary inlet for extraction. We overcame the difficulty of coupling SDME and CE-MS by using a temporary outlet reservoir. Basic drugs such as methamphetamine, amphetamine, phenethylamine, methoxyphenamine, and mephentermine were extracted from a basic sample solution to an acidic acceptor drop covered with a thin octanol layer formed at the capillary inlet tip. Compared to the CE-MS method in the multiple reaction monitoring (MRM) mode, the in-line SDME-CE-MS/MS technique showed 130∼150-fold enrichment in 10 min. The relative standard deviations (RSDs) of peak height ranged from 9 to 13 %. RSDs can be reduced from 4 to 6 % using mephentermine as an internal standard. We examined the pretreatment of sample with and without SDME from human urine under the full-scan mode, which confirmed that many metabolites were cleaned up by the selective extraction method of SDME. Even if the analytes from human urine were analyzed under the MRM mode used as a mass filter, there was an isobaric compound causing a disturbance to the analysis. However, in-line SDME-CE-MS/MS made it possible to perform a sample cleanup as well as sample enrichment. The research is extremely advantageous in that it is rapid, convenient, and highly sensitive for the analysis of biological samples using a commercially available instrument.
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Affiliation(s)
- Jihye Kim
- Department of Chemistry, Seoul National University, Seoul, 151-747, South Korea
| | - Kihwan Choi
- Division of Methodology for Quality of Life, Korea Research Institute of Standards and Science, Daejeon, 305-340, South Korea
| | - Doo Soo Chung
- Department of Chemistry, Seoul National University, Seoul, 151-747, South Korea.
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18
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Zhang L, Li X, Li Y, Shi X, Yu HZ. Indirect Competitive Assays on DVD for Direct Multiplex Detection of Drugs of Abuse in Oral Fluids. Anal Chem 2015; 87:1896-902. [DOI: 10.1021/ac5040715] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Lingling Zhang
- Department
of Chemistry, Beijing Normal University, Beijing 100875, P. R. China
- Key
Laboratory of Advanced Transducers and Intelligent Control Systems
(Shanxi Province and Ministry of Education), Taiyuan University of Technology, Shanxi 030024, P. R. China
| | - Xiaochun Li
- Key
Laboratory of Advanced Transducers and Intelligent Control Systems
(Shanxi Province and Ministry of Education), Taiyuan University of Technology, Shanxi 030024, P. R. China
| | - Yunchao Li
- Department
of Chemistry, Beijing Normal University, Beijing 100875, P. R. China
| | - Xiaoli Shi
- Department
of Chemistry, Beijing Normal University, Beijing 100875, P. R. China
| | - Hua-Zhong Yu
- Key
Laboratory of Advanced Transducers and Intelligent Control Systems
(Shanxi Province and Ministry of Education), Taiyuan University of Technology, Shanxi 030024, P. R. China
- Department
of Chemistry, Simon Fraser University, Burnaby, British Columbia V5A 1S6, Canada
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19
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Gholivand MB, Jalalvand AR, Goicoechea HC, Gargallo R, Skov T, Paimard G. Combination of electrochemistry with chemometrics to introduce an efficient analytical method for simultaneous quantification of five opium alkaloids in complex matrices. Talanta 2015; 131:26-37. [DOI: 10.1016/j.talanta.2014.07.053] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2014] [Revised: 07/19/2014] [Accepted: 07/20/2014] [Indexed: 10/25/2022]
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20
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Guo L, Lin Z, Huang Z, Liang H, Jiang Y, Ye Y, Wu Z, Zhang R, Zhang Y, Rao Y. Simple and rapid analysis of four amphetamines in human whole blood and urine using liquid–liquid extraction without evaporation/derivatization and gas chromatography–mass spectrometry. Forensic Toxicol 2014. [DOI: 10.1007/s11419-014-0257-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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21
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Yamini Y, Seidi S, Feizbakhsh R, Baheri T, Rezazadeh M. Liquid-phase microextraction based on two immiscible organic solvents followed by gas chromatography with mass spectrometry as an efficient method for the preconcentration and determination of cocaine, ketamine, and lidocaine in human urine samples. J Sep Sci 2014; 37:2364-71. [DOI: 10.1002/jssc.201400268] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2014] [Revised: 05/21/2014] [Accepted: 06/05/2014] [Indexed: 11/07/2022]
Affiliation(s)
- Yadollah Yamini
- Department of Chemistry; Tarbiat Modares University; Tehran Iran
| | - Shahram Seidi
- Department of Analytical Chemistry; Faculty of Chemistry; K.N. Toosi University of Technology; Tehran Iran
| | | | | | - Maryam Rezazadeh
- Department of Chemistry; Tarbiat Modares University; Tehran Iran
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22
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Dispersive liquid–liquid microextraction followed by high-performance liquid chromatography–ultraviolet detection to determination of opium alkaloids in human plasma. J Pharm Biomed Anal 2013; 85:14-20. [DOI: 10.1016/j.jpba.2013.06.030] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2013] [Revised: 06/23/2013] [Accepted: 06/24/2013] [Indexed: 11/18/2022]
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23
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Shamsipur M, Fattahi N. Extraction and determination of opium alkaloids in urine samples using dispersive liquid–liquid microextraction followed by high-performance liquid chromatography. J Chromatogr B Analyt Technol Biomed Life Sci 2011; 879:2978-83. [DOI: 10.1016/j.jchromb.2011.08.033] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2011] [Revised: 08/24/2011] [Accepted: 08/26/2011] [Indexed: 11/26/2022]
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24
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Bioanalytical methods for the determination of cocaine and metabolites in human biological samples. Bioanalysis 2011; 1:977-1000. [PMID: 21083066 DOI: 10.4155/bio.09.72] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Determination of cocaine and its metabolites in biological specimens is of great importance, not only in clinical and forensic toxicology, but also in workplace drug testing. These compounds are normally screened for using sensitive immunological methods. However, screening methods are unspecific and, therefore, the posterior confirmation of presumably positive samples by a specific technique is mandatory. Although GC-MS-based techniques are still the most commonly used for confirmation purposes of cocaine and its metabolites in biological specimens, the advent of LC-MS and LC-MS/MS has enabled the detection of even lower amounts of these drugs, which assumes particular importance when sample volume available is small, as frequently occurs with oral fluid. This paper will review recently-published papers that describe procedures for detection of cocaine and metabolites, not only in the most commonly used specimens, such as blood and urine, but also in other 'alternative' matrices (e.g., oral fluid and hair) with a special focus on sample preparation and chromatographic analysis.
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25
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Brown SD, Melton TC. Trends in bioanalytical methods for the determination and quantification of club drugs: 2000-2010. Biomed Chromatogr 2010; 25:300-21. [DOI: 10.1002/bmc.1549] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2010] [Revised: 09/09/2010] [Accepted: 09/10/2010] [Indexed: 11/10/2022]
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26
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Cheong JC, Suh SI, Ko BJ, Kim JY, In MK, Cheong WJ. Gas chromatography-mass spectrometric method for the screening and quantification of illicit drugs and their metabolites in human urine using solid-phase extraction and trimethylsilyl derivatization. J Sep Sci 2010; 33:1767-78. [PMID: 20512807 DOI: 10.1002/jssc.201000087] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
A simple and rapid GC-MS method has been developed for the screening and quantification of many illicit drugs and their metabolites in human urine by using automatic SPE and trimethylsilylation. Sixty illicit drugs, including parent drugs and their metabolites that are possibly abused in Korea, can be monitored by this method. Among them, 24 popularly abused illicit drugs were selected for quantification. Very delicate optimizations were carried out in SPE, trimethylsilylation derivatization, and GC/MS to enable such remarkable achievements. Trimethylsilylated analytes were well separated within 21 min by GC-MS. In the validation results, the LOD of all the analytes were in the range of 2-75 ng/mL. The LOQ of the quantified analytes were in the range of 5-98 ng/mL. The linearity (r(2)) of the quantified analytes ranged 0.990-1.000 in each concentration range between 10 and 1000 ng/mL. The mean recoveries ranged from 62 to 126% at three different concentrations of each analyte. The inter-day and inter-person accuracies were within -13.3 approximately 14.9%, and -10.1 approximately 13.0%, respectively, and the inter-day and inter-person precisions were less than 12.9%. The method was reliable and efficient for the screening and quantification of abused illicit drugs in routine urine analysis.
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Affiliation(s)
- Jae Chul Cheong
- Drug Analysis Laboratory, Forensic Science Division, Banporo, Seocho-gu, Seoul, Korea
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27
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WANG X, YE N, WANG J, GU X. Simultaneous determination of cocaine and its metabolite ecgonine methyl ester in human blood using microwave extraction-gas chromatography. Se Pu 2010; 28:673-6. [DOI: 10.3724/sp.j.1123.2010.00673] [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] Open
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28
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Brunetto MDR, Delgado Y, Clavijo S, Contreras Y, Torres D, Ayala C, Gallignani M, Forteza R, Martin VC. Analysis of cocaine and benzoylecgonine in urine by using multisyringe flow injection analysis-gas chromatography-mass spectrometry system. J Sep Sci 2010; 33:1779-86. [DOI: 10.1002/jssc.200900833] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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29
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Meng P, Margot P. Constituent profiling of ecstasy seizures by GC-MS after joint derivatization with MSTFA and MBTFA. Forensic Toxicol 2009. [DOI: 10.1007/s11419-009-0080-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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30
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Saito T, Yamagiwa T, Kishiyama I, Miyazaki S, Nakamoto A, Nishida M, Namera A, Inokuchi S. Monolithic Spin Column Extraction and GC-MS for Simultaneously Detecting Nine Cold Medication Compounds and the Drug Bromoisovaleryl Urea in Human Serum. Chromatographia 2009. [DOI: 10.1365/s10337-009-1204-y] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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31
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Porto RMDO, Pérez AR, Vidal MTC, Fraga MG. Qualitative confirmation procedure for ephedrines as acetonide derivatives in doping urine samples by gas chromatography/electron ionization mass spectrometry. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2009; 23:249-257. [PMID: 19072865 DOI: 10.1002/rcm.3872] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Ephedrines are sympathomimetic amines which have central nervous system stimulating properties and, for this reason, some of them are forbidden in sport by the World Antidoping Agency (WADA). They are screened and quantitated in urine by several published techniques and confirmed by gas chromatography/mass spectrometry (GC/MS). In this paper, a simple and easy confirmation procedure for norpseudoephedrine, norephedrine, ephedrine and pseudoephedrine in human urine by GC/electron ionization (EI)-MS is described. After the addition of diphenylamine as internal standard, a liquid-liquid extraction procedure under alkaline conditions with tert-butyl methyl ether was applied to the samples. The analytes were derivatized with acetone and pyridine to form the correspondent oxazolidine derivatives (acetonide). The EI mass spectra of all the studied substances have many diagnostic ions with relative abundance in accordance with WADA requirements and show great structural information content. The fragmentation of theses derivatives is discussed.
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Affiliation(s)
- Rodny Montes de Oca Porto
- Instituto de Medicina del Deporte, Laboratorio Antidoping. Calle 100 y Aldabó, CP 10800, Ciudad de la Habana, Cuba.
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32
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Spectrophotometric cocaine determination in a biphasic medium employing flow-batch sequential injection analysis. Anal Chim Acta 2008; 629:98-103. [DOI: 10.1016/j.aca.2008.09.030] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2008] [Revised: 09/02/2008] [Accepted: 09/11/2008] [Indexed: 11/19/2022]
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33
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Castiglioni S, Zuccato E, Chiabrando C, Fanelli R, Bagnati R. Mass spectrometric analysis of illicit drugs in wastewater and surface water. MASS SPECTROMETRY REVIEWS 2008; 27:378-394. [PMID: 18421768 DOI: 10.1002/mas.20168] [Citation(s) in RCA: 96] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Residues of illicit drugs have been recently found in urban wastewater and surface water. Their levels reflect the amount of drugs collectively excreted by consumers and can therefore be used to estimate drug abuse. An overview of the most widely used illicit drugs and of the analytical methods used for their detection in wastewater and surface water is presented here. Solid-phase extraction and high performance liquid chromatography-tandem mass spectrometry are the techniques that have been used for these investigations. Instrumental conditions and fragmentation patterns of illicit drugs and their metabolites are described.
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Affiliation(s)
- Sara Castiglioni
- Department of Environmental Health Sciences, Mario Negri Institute for Pharmacological Research, Via La Masa 19, 20156 Milan, Italy.
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34
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Djordjevic S, Tomasevic G. Ecstasy tablets intoxication with lethal autcome. VOJNOSANIT PREGL 2007; 64:635-8. [DOI: 10.2298/vsp0709635d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Background. Ecstasy, 3,4-methylenedioxymethamphetamine (MDMA), is a synthetic compound increasingly popular as a recreational drug. Tablets known as ecstasy contain MDMA, but may also contain caffeine, ephedrine, paramethoxyamphetamine, 3,4-methylenedioxyamphetamine (MDA), amphetamine, methamphetamine, and ketamine. After absorption MDMA is metabolized to MDA, 4-hydroxy-3- metoxymetamphetamine (HMMA) and 4-hydroxy-3- metoxyamphetamine (HMA). After that HMMA and HMA are conjugated and excreted by urine. The aim of this report was to confirm by toxicological post mortem analyses of poisoned person organs that ecstasy had been the cause of his death. Case report. We reported the death of a 17-year-old boy after the ingestion of ecstasy. MDMA and metabolites were determined by multicolumn high performance liquid chromatography with UV spectral detection (HPLC-UV). Toxicological tests showed the presence of MDMA in all samples. When examining post mortem material (the organs), the highest concentrations were measured in the stomach (835,97 ?g/g) and kidney (801,14 ?g/g). The minimal concentration was in the liver (22,26 ?g/g). Conclusion. The obtained results of MDMA and its metabolites concentrations showed abuse of a high dose of ecstasy. .
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Affiliation(s)
| | - Gordana Tomasevic
- Vojnomedicinska akademija, Centar za patologiju i sudsku medicinu, Beograd
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35
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de Oca Porto RM, Pérez AR, Correa Vidal MT. Electron ionization mass spectra of ephedrines in a doping confirmatory procedure: a curious migration of the trimethylsilyl group in the N-acetyl-O-trimethylsilyl derivatives. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2007; 21:1871-6. [PMID: 17523214 DOI: 10.1002/rcm.3028] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Ephedrines have central nervous system stimulating properties and, for this reason, some of them are forbidden in sport by the World Antidoping Agency (WADA). They are screened and quantitated in urine by several published techniques and confirmed by gas chromatography/mass spectrometry (GC/MS). In this paper, a simple confirmation procedure for norpseudoephedrine, norephedrine, ephedrine and pseudoephedrine in human urine by GC/electron ionization (EI)-MS is described. After the addition of levallorphane as internal standard, a liquid-liquid extraction procedure under alkaline conditions with tert-butyl methyl ether was applied to the samples. The analytes were derivatized with acetic acid anhydride and N-methyl-N-trimethylsilyltrifluoroacetamide to form N-acetyl-O-trimethylsilyl derivatives. The EI mass spectra of all the studied substances have many diagnostic ions with relative abundance in accordance with WADA requirements and show great structural information content. A curious migration of the trimethylsilyl group is proposed.
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Affiliation(s)
- Rodny Montes de Oca Porto
- Instituto de Medicina del Deporte, Laboratorio Antidoping, Calle 100 y Aldabó, CP 10800, Ciudad de la Habana, Cuba.
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