1
|
Gil Tejedor AM, Bravo Yagüe JC, Paniagua González G, Garcinuño Martínez RM, Fernández Hernando P. Selective Extraction of Diazepam and Its Metabolites from Urine Samples by a Molecularly Imprinted Solid-Phase Extraction (MISPE) Method. Polymers (Basel) 2024; 16:635. [PMID: 38475318 DOI: 10.3390/polym16050635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Revised: 02/15/2024] [Accepted: 02/19/2024] [Indexed: 03/14/2024] Open
Abstract
In this research, a molecularly imprinted polymer (MIP) was synthesized by precipitation polymerization using oxazepam (OZ) as a template molecule and was subsequently applied as a selective sorbent for the extraction of diazepam (DZP) and its metabolites in urine samples using an SPE cartridge. OZ, temazepam (TZ), nordiazepam (NZ) and DZP were analyzed in the final extracts by high-performance liquid chromatography with diode array detection (HPLC-DAD). The SPE extraction steps were optimized, and the evaluation of an imprinting factor was carried out. The selectivity of the method for OZ versus structurally related benzodiazepines (BZDs), such as bromazepam (BRZ), tetrazepam (TTZ) and halazepam (HZ), was investigated. Under the optimum conditions, the proposed methodology provided good linearity in the range of 10-1500 ng/mL, with limit of detection values between 13.5 and 21.1 ng/mL and recovery levels for DZP and its metabolites from 89.0 to 93.9% (RSD ≤ 8%) at a concentration level of 1000 ng/mL. The proposed method exhibited good selectivity, precision and accuracy and was applied to the analysis of urine samples from a real case of DZP intake.
Collapse
Affiliation(s)
- Ana María Gil Tejedor
- Department of Analytical Sciences, Faculty of Sciences, National Distance Education University (UNED), Urbanización Monte Rozas, Avda. Esparta s/n, 28232 Las Rozas, Madrid, Spain
| | - Juan Carlos Bravo Yagüe
- Department of Analytical Sciences, Faculty of Sciences, National Distance Education University (UNED), Urbanización Monte Rozas, Avda. Esparta s/n, 28232 Las Rozas, Madrid, Spain
| | - Gema Paniagua González
- Department of Analytical Sciences, Faculty of Sciences, National Distance Education University (UNED), Urbanización Monte Rozas, Avda. Esparta s/n, 28232 Las Rozas, Madrid, Spain
| | - Rosa María Garcinuño Martínez
- Department of Analytical Sciences, Faculty of Sciences, National Distance Education University (UNED), Urbanización Monte Rozas, Avda. Esparta s/n, 28232 Las Rozas, Madrid, Spain
| | - Pilar Fernández Hernando
- Department of Analytical Sciences, Faculty of Sciences, National Distance Education University (UNED), Urbanización Monte Rozas, Avda. Esparta s/n, 28232 Las Rozas, Madrid, Spain
| |
Collapse
|
2
|
Zhang YX, Zhang Y, Bian Y, Liu YJ, Ren A, Zhou Y, Shi D, Feng XS. Benzodiazepines in complex biological matrices: Recent updates on pretreatment and detection methods. J Pharm Anal 2023. [DOI: 10.1016/j.jpha.2023.03.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2023] Open
|
3
|
Affiliation(s)
- David Love
- United States Drug Enforcement Administration, Special Testing and Research Laboratory, USA
| | - Nicole S. Jones
- RTI International, Applied Justice Research Division, Center for Forensic Sciences, 3040 E. Cornwallis Road, Research Triangle Park, NC, 22709-2194, USA,70113th Street, N.W., Suite 750, Washington, DC, 20005-3967, USA,Corresponding author. RTI International, Applied Justice Research Division, Center for Forensic Sciences, 3040 E. Cornwallis Road, Research Triangle Park, NC, 22709-2194, USA.
| |
Collapse
|
4
|
Emerging trends in point-of-care sensors for illicit drugs analysis. Talanta 2022; 238:123048. [PMID: 34801905 DOI: 10.1016/j.talanta.2021.123048] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 11/03/2021] [Accepted: 11/06/2021] [Indexed: 12/18/2022]
Abstract
Consumption of illicit narcotic drugs and fatal or criminal activities under their influence has become an utmost concern worldwide. These drugs influence an individual's feelings, perceptions, and emotions by altering the state of consciousness and thus can result in serious safety breaches at critical workplaces. Point-of-care drug-testing devices have become the need-of-the-hour for many sections such as the law enforcement agencies, the workplaces, etc. for safety and security. This review focuses on the recent progress on various electrochemical and optical nanosensors developed for the analysis of the most common illicit drugs (or their metabolites) such as tetrahydrocannabinol (THC), cocaine (COC), opioids (OPs), amphetamines & methamphetamine, and benzodiazepine (BZDs). The paper also highlights the sensitivity and selectivity of various sensing modalities along with evolving parameters such as real-time monitoring and measurement via a smart user interface. An overall outlook of recent technological advances in point of care (POC) devices and guided insights and directions for future research is presented.
Collapse
|
5
|
Dragan AM, Parrilla M, Feier B, Oprean R, Cristea C, De Wael K. Analytical techniques for the detection of amphetamine-type substances in different matrices: A comprehensive review. Trends Analyt Chem 2021. [DOI: 10.1016/j.trac.2021.116447] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
|
6
|
Moghtader M, Bahram M, Farhadi K. Derivative Linear Sweep Voltammetry and Discrete Wavelet Transform for the Simultaneous Determination of Codeine and Thebaine by Artificial Neural Networks. ChemistrySelect 2021. [DOI: 10.1002/slct.202101222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Mehdi Moghtader
- Department of Analytical Chemistry Faculty of Chemistry Urmia University Urmia Iran
| | - Morteza Bahram
- Department of Analytical Chemistry Faculty of Chemistry Urmia University Urmia Iran
| | - Khalil Farhadi
- Department of Analytical Chemistry Faculty of Chemistry Urmia University Urmia Iran
| |
Collapse
|
7
|
Determination of Chemical Oxygen Demand (COD) Using Nanoparticle-Modified Voltammetric Sensors and Electronic Tongue Principles. CHEMOSENSORS 2021. [DOI: 10.3390/chemosensors9030046] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
This manuscript reports the use of nanoparticle-modified voltammetric sensors for the rapid and green determination of chemical oxygen demand in river waters and waters from agricultural waste. Four different variants of modified electrodes have been prepared: CuO nanoparticles electrogenerated over Cu and covered with Nafion film (CuO/Cu-Nf), and graphite–epoxy composites modified with Cu, CuO, and Cu–Ni alloy nanoparticles. The response features of these electrodes were assessed by calibrating them vs. glucose, glycine, ethyleneglycol, and hydrogenphtalate in alkaline media, as samples providing different difficulty in their (bio)degradation characteristics. The most sensitive electrode was demonstrated to be the (CuO/Cu-Nf) electrode, with an LOD of 12.3 mg O2·L−1. The joint information provided by the sensor array showed the ability of estimating both the organic load and the type of sample in terms of difficulty of degradation, in what can be named an intelligent sensor assembly.
Collapse
|
8
|
Braunger ML, Fier I, Shimizu FM, de Barros A, Rodrigues V, Riul A. Influence of the Flow Rate in an Automated Microfluidic Electronic Tongue Tested for Sucralose Differentiation. SENSORS (BASEL, SWITZERLAND) 2020; 20:s20216194. [PMID: 33143197 PMCID: PMC7662545 DOI: 10.3390/s20216194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 10/27/2020] [Accepted: 10/29/2020] [Indexed: 06/11/2023]
Abstract
Incorporating electronic tongues into microfluidic devices brings benefits as dealing with small amounts of sample/discharge. Nonetheless, such measurements may be time-consuming in some applications once they require several operational steps. Here, we designed four collinear electrodes on a single printed circuit board, further comprised inside a straight microchannel, culminating in a robust e-tongue device for faster data acquisition. An analog multiplexing circuit automated the signal's routing from each of the four sensing units to an impedance analyzer. Both instruments and a syringe pump are controlled by dedicated software. The automated e-tongue was tested with four Brazilian brands of liquid sucralose-based sweeteners under 20 different flow rates, aiming to systematically evaluate the influence of the flow rate in the discrimination among sweet tastes sold as the same food product. All four brands were successfully distinguished using principal component analysis of the raw data, and despite the nearly identical sucralose-based taste in all samples, all brands' significant distinction is attributed to small differences in the ingredients and manufacturing processes to deliver the final food product. The increasing flow rate improves the analyte's discrimination, as the silhouette coefficient reaches a plateau at ~3 mL/h. We used an equivalent circuit model to evaluate the raw data, finding a decrease in the double-layer capacitance proportional to improvements in the samples' discrimination. In other words, the flow rate increase mitigates the formation of the double-layer, resulting in faster stabilization and better repeatability in the sensor response.
Collapse
Affiliation(s)
- Maria L. Braunger
- Department of Applied Physics, “Gleb Wataghin” Institute of Physics (IFGW), University of Campinas (UNICAMP), Campinas SP 13083-859, Brazil; (M.L.B.); (F.M.S.); (V.R.)
| | - Igor Fier
- Quantum Design Latin America, Campinas SP 13080-655, Brazil;
| | - Flávio M. Shimizu
- Department of Applied Physics, “Gleb Wataghin” Institute of Physics (IFGW), University of Campinas (UNICAMP), Campinas SP 13083-859, Brazil; (M.L.B.); (F.M.S.); (V.R.)
| | - Anerise de Barros
- Laboratory of Functional Materials, Institute of Chemistry (IQ), University of Campinas (UNICAMP), Campinas SP 13083-970, Brazil;
| | - Varlei Rodrigues
- Department of Applied Physics, “Gleb Wataghin” Institute of Physics (IFGW), University of Campinas (UNICAMP), Campinas SP 13083-859, Brazil; (M.L.B.); (F.M.S.); (V.R.)
| | - Antonio Riul
- Department of Applied Physics, “Gleb Wataghin” Institute of Physics (IFGW), University of Campinas (UNICAMP), Campinas SP 13083-859, Brazil; (M.L.B.); (F.M.S.); (V.R.)
| |
Collapse
|