PMID- 31152899 OWN - NLM STAT- MEDLINE DCOM- 20190815 LR - 20221207 IS - 1879-1298 (Electronic) IS - 0045-6535 (Linking) VI - 232 DP - 2019 Oct TI - In-situ sampling of chlorophenols in industrial wastewater using diffusive gradients in thin films technique based on mesoporous carbon. PG - 18-25 LID - S0045-6535(19)31076-8 [pii] LID - 10.1016/j.chemosphere.2019.05.163 [doi] AB - In-situ sampling of 2-chlorophenol (CP), 2,4-dichlorophenol (DCP), and 2,4,6-trichlorophenol (TCP) in industrial wastewater was carried out by the diffusive gradients in thin films (DGT) device based on mesoporous carbon (MC). The diffusion coefficients of CP ((1.33 +/- 0.05) x 10(-6) cm(2) s(-1)), DCP((1.35 +/- 0.04) x 10(-6) cm(2) s(-1)) and TCP((1.09 +/- 0.07) x 10(-6) cm(2) s(-1))) in nylon membrane at 25  degrees C were independent of pH 3-9 and ionic strength as pNaCl from 0.155 to 3, and were less than their values in water, demonstrating that the nylon membrane with good tolerance and constant diffusion coefficients was suitable as the DGT diffusion layer for controlling the diffusion of CPs. MC-DGT accurately measured the concentrations of CP, DCP and TCP in synthetic solution (C(DGT)/C(SOLN) = 0.956-1.04) over the deployment of 120 h. The experimental data also agreed well with the theoretical data calculated on the DGT equation. The performance of MC-DGT for sampling CPs was independent of pH (3-8) and ionic strength as pNaCl (1.3-3) due to the change of the interaction between MC and CPs under relatively high pH and ionic strength. Deployments in laboratory and field trials demonstrated that the MC-DGT was a reliable simple, robust and accurate tool for the in-situ sampling of CP, DCP and TCP in the industrial wastewater. CI - Copyright (c) 2019 Elsevier Ltd. All rights reserved. FAU - Meng, Zhuo AU - Meng Z AD - College of Chemistry Chemical Engineering, and Environmental Engineering, Liaoning Shihua University, China. FAU - You, Nan AU - You N AD - College of Chemistry Chemical Engineering, and Environmental Engineering, Liaoning Shihua University, China. FAU - Fan, Hong-Tao AU - Fan HT AD - College of Chemistry Chemical Engineering, and Environmental Engineering, Liaoning Shihua University, China. Electronic address: httyf_77@163.com. LA - eng PT - Journal Article DEP - 20190522 PL - England TA - Chemosphere JT - Chemosphere JID - 0320657 RN - 0 (Chlorophenols) RN - 0 (Nylons) RN - 0 (Waste Water) RN - 0 (Water Pollutants, Chemical) RN - 7440-44-0 (Carbon) RN - K9KAV4K6BN (2-chlorophenol) MH - Carbon/chemistry MH - Chlorophenols/*analysis MH - Diffusion MH - *Environmental Monitoring MH - Nylons MH - Osmolar Concentration MH - Waste Disposal, Fluid MH - Wastewater/analysis/chemistry MH - Water Pollutants, Chemical/*analysis OTO - NOTNLM OT - Chlorophenols OT - Diffusive gradients in thin films OT - In-situ OT - Mesoporous carbon OT - Sampling EDAT- 2019/06/04 06:00 MHDA- 2019/08/16 06:00 CRDT- 2019/06/02 06:00 PHST- 2019/03/24 00:00 [received] PHST- 2019/05/12 00:00 [revised] PHST- 2019/05/18 00:00 [accepted] PHST- 2019/06/04 06:00 [pubmed] PHST- 2019/08/16 06:00 [medline] PHST- 2019/06/02 06:00 [entrez] AID - S0045-6535(19)31076-8 [pii] AID - 10.1016/j.chemosphere.2019.05.163 [doi] PST - ppublish SO - Chemosphere. 2019 Oct;232:18-25. doi: 10.1016/j.chemosphere.2019.05.163. Epub 2019 May 22.