PMID- 30504023 OWN - NLM STAT- MEDLINE DCOM- 20190220 LR - 20221207 IS - 1879-1026 (Electronic) IS - 0048-9697 (Linking) VI - 656 DP - 2019 Mar 15 TI - Wastewater-based monitoring of illicit drug consumption in Istanbul: Preliminary results from two districts. PG - 231-238 LID - S0048-9697(18)34701-6 [pii] LID - 10.1016/j.scitotenv.2018.11.345 [doi] AB - Wastewater-based epidemiology is a well-established and complementary approach for monitoring illicit drug use in the general population. In this study, amphetamine (AMP), methamphetamine (METH), 3,4-methylenedioxymethamphetamine (MDMA), cocaine (COC) (from benzoylecgonine), and cannabis (from THC-COOH) consumption levels were investigated for the first time in Turkey (Istanbul). A solid-phase extraction method was applied to influent wastewater samples collected from two districts, Beyoglu and Catalca. Liquid chromatography-tandem mass spectrometry (LC-MS/MS) analysis was conducted with electrospray ionization in positive mode. Calibration curves were acquired in linear form with >0.999 correlation coefficients. Limit of detection levels were measured as 0.91-151 ng/L, and limit of quantitation levels were in the range of 3 to 500 ng/L. Solid-phase extraction recovery and repeatability experiments were achieved by spiking the mix solution to different concentrations (50, 250, 750 ng/L) in 50 mL tap water and wastewater (500, 1000 ng/L) samples in six replicates. The method was optimized, and recoveries were found to be over 80% for all six substances with up to 11.9% relative standard deviation. According to the real sample results, cannabis was found to be the most abused illicit substance among the analytes. The mean consumptions of the two districts, including seven consecutive days for AMP, METH, MDMA, COC, and cannabis, were found to be 27.2, 322, 331, 385, and 1224 mg/day/1000 inhabitants, respectively. In this presented study, all targeted compounds were analyzed simultaneously with the same analytical conditions. To the best of our knowledge, this report is the first to present illicit drug consumption data from Istanbul. CI - Copyright (c) 2018 Elsevier B.V. All rights reserved. FAU - Mercan, Selda AU - Mercan S AD - Istanbul University-Cerrahpasa, Institute of Forensic Sciences, Department of Science, 34098 Cerrahpasa, Istanbul, Turkey. Electronic address: mercans@istanbul.edu.tr. FAU - Kuloglu, Merve AU - Kuloglu M AD - Istanbul University-Cerrahpasa, Institute of Forensic Sciences, Department of Science, 34098 Cerrahpasa, Istanbul, Turkey. FAU - Tekin, Tugba AU - Tekin T AD - Istanbul University-Cerrahpasa, Institute of Forensic Sciences, Department of Science, 34098 Cerrahpasa, Istanbul, Turkey. FAU - Turkmen, Zeynep AU - Turkmen Z AD - Istanbul University-Cerrahpasa, Institute of Forensic Sciences, Department of Science, 34098 Cerrahpasa, Istanbul, Turkey. FAU - Dogru, Ahmet Ozgur AU - Dogru AO AD - Istanbul Technical University, Faculty of Civil Engineering, Department of Geomatics, 34469 Istanbul, Turkey. FAU - Safran, Ayse N AU - Safran AN AD - Istanbul Technical University, Faculty of Civil Engineering, Department of Geomatics, 34469 Istanbul, Turkey; Istanbul Water and Sewerage Administration, 34060 Istanbul, Turkey. FAU - Acikkol, Munevver AU - Acikkol M AD - Istanbul University-Cerrahpasa, Institute of Forensic Sciences, Department of Science, 34098 Cerrahpasa, Istanbul, Turkey. FAU - Asicioglu, Faruk AU - Asicioglu F AD - Istanbul University-Cerrahpasa, Institute of Forensic Sciences, Department of Medicine, 34098 Cerrahpasa, Istanbul, Turkey. LA - eng PT - Journal Article DEP - 20181124 PL - Netherlands TA - Sci Total Environ JT - The Science of the total environment JID - 0330500 RN - 0 (Illicit Drugs) RN - 0 (Waste Water) RN - 0 (Water Pollutants, Chemical) SB - IM MH - Chromatography, Liquid MH - Cities MH - Illicit Drugs/*analysis MH - Solid Phase Extraction MH - Tandem Mass Spectrometry MH - Turkey MH - Wastewater/*analysis MH - Water Pollutants, Chemical/analysis OTO - NOTNLM OT - Community consumption OT - Illicit drugs OT - Istanbul OT - Turkey OT - Wastewater-based epidemiology EDAT- 2018/12/06 06:00 MHDA- 2019/03/21 06:00 CRDT- 2018/12/04 06:00 PHST- 2018/07/19 00:00 [received] PHST- 2018/11/23 00:00 [revised] PHST- 2018/11/23 00:00 [accepted] PHST- 2018/12/06 06:00 [pubmed] PHST- 2019/03/21 06:00 [medline] PHST- 2018/12/04 06:00 [entrez] AID - S0048-9697(18)34701-6 [pii] AID - 10.1016/j.scitotenv.2018.11.345 [doi] PST - ppublish SO - Sci Total Environ. 2019 Mar 15;656:231-238. doi: 10.1016/j.scitotenv.2018.11.345. Epub 2018 Nov 24.