PMID- 24315025 OWN - NLM STAT- MEDLINE DCOM- 20141107 LR - 20221207 IS - 1879-1026 (Electronic) IS - 0048-9697 (Linking) VI - 487 DP - 2014 Jul 15 TI - Ozonation of wastewater: removal and transformation products of drugs of abuse. PG - 763-70 LID - S0048-9697(13)01297-7 [pii] LID - 10.1016/j.scitotenv.2013.11.023 [doi] AB - In this study amphetamine, methamphetamine, methylenedioxymethamphetamine (MDMA), cocaine (COC), benzoylecgonine (BE), ketamine (KET) and oxycodone (OXY) in wastewater at concentrations of 100 mugL(-1) were subjected to ozone to determine their removals as a function of ozone dose and to identify significant oxidation transformation products (OTPs) produced as a result of ozonation. A method based on high resolution mass spectrometry and differential analysis was used to facilitate and accelerate the identification and structural elucidation of the transformation products. The drug removal ranged from 3 to 50% depending on the complexity of the matrix and whether a mixture or individual drugs were ozonated. Both transient and persistent oxidation transformation products were identified for MDMA, COC and OXY and their chemical formulae were determined. Three possible structures of the persistent transformation product of MDMA (OTP-213) with chemical formula C10H16O4N, were determined based on MS(n) mass spectra and the most plausible structure (OTP-213a) was determined based on the chemistry of ozone. These results indicate that ozone is capable of removing drugs of abuse from wastewater to varying extents and that persistent transformation products are produced as a result of treatment. CI - Copyright (c) 2013 Elsevier B.V. All rights reserved. FAU - Rodayan, Angela AU - Rodayan A AD - Department of Chemical Engineering, McGill University, 3610 University Street, Montreal, Quebec, Canada, H3A 2B2. FAU - Segura, Pedro Alejandro AU - Segura PA AD - Department of Chemical Engineering, McGill University, 3610 University Street, Montreal, Quebec, Canada, H3A 2B2. FAU - Yargeau, Viviane AU - Yargeau V AD - Department of Chemical Engineering, McGill University, 3610 University Street, Montreal, Quebec, Canada, H3A 2B2. Electronic address: viviane.yargeau@mcgill.ca. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20131207 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) RN - 66H7ZZK23N (Ozone) SB - IM MH - Illicit Drugs/analysis/*chemistry MH - Ozone/*chemistry MH - Waste Disposal, Fluid/*methods MH - Wastewater/*chemistry MH - Water Pollutants, Chemical/*chemistry OTO - NOTNLM OT - Amphetamines OT - Cocaine OT - Drugs of abuse OT - High resolution mass spectrometry OT - Ozone OT - Wastewater EDAT- 2013/12/10 06:00 MHDA- 2014/11/08 06:00 CRDT- 2013/12/10 06:00 PHST- 2013/07/30 00:00 [received] PHST- 2013/10/18 00:00 [revised] PHST- 2013/11/04 00:00 [accepted] PHST- 2013/12/10 06:00 [entrez] PHST- 2013/12/10 06:00 [pubmed] PHST- 2014/11/08 06:00 [medline] AID - S0048-9697(13)01297-7 [pii] AID - 10.1016/j.scitotenv.2013.11.023 [doi] PST - ppublish SO - Sci Total Environ. 2014 Jul 15;487:763-70. doi: 10.1016/j.scitotenv.2013.11.023. Epub 2013 Dec 7.