PMID- 35278447 OWN - NLM STAT- MEDLINE DCOM- 20220506 LR - 20220506 IS - 1879-1298 (Electronic) IS - 0045-6535 (Linking) VI - 298 DP - 2022 Jul TI - Occurrence and distribution of polyhalogenated carbazoles in eastern Tibetan Plateau soils along the slope of Mt. Qionglai. PG - 134200 LID - S0045-6535(22)00693-2 [pii] LID - 10.1016/j.chemosphere.2022.134200 [doi] AB - Polyhalogenated carbazoles (PHCZs), are considered as potential persistent organic pollutants (POPs), which have been frequently detected in the environment. However, the altitudinal distribution characteristics and possible sources of PHCZs in high mountain soils are still unknown. The present study was the first to analyze PHCZs in soil samples collected along the eastern slope of Mt. Qionglai (MQ), the east edge of the Tibetan Plateau. The concentration of SigmaPHCZs (based on dry weight) ranges from 14.4 to 107 ng/g (median value of 40.9), which was at high end of the range reported in soils and sediments to date in the literature. The composition profiles of PHCZs in the soils of MQ were dominated by 3,6-dichlorocarbazole (36-CCZ), 3-chlorocarbazole (3-CCZ), and 2-bromocarbazole (2-BCZ). The mean TOC-normalized concentrations of SigmaPHCZs in soil samples from below-treeline (2092 ng/g TOC) were higher than those from alpine meadow (1124 ng/g TOC), probably due to the forest filter effect. The decreasing trend of the PHCZs TOC-normalized concentrations with altitude shows that accumulation of PHCZs from the alpine meadow samples was not affected by the mountain cold-trapping effect. Significantly positive correlations were observed between the concentrations of more than half of detected PHCZ congeners and TOC. In addition, PHCZs show the potential to represent a class of POPs with the frequent occurrence and wide distribution, as the abundance and environmental behavior of PHCZs are similar to some POPs in MQ. CI - Copyright (c) 2022 Elsevier Ltd. All rights reserved. FAU - Liu, Mingkai AU - Liu M AD - College of Environmental Science and Engineering, Qingdao University, Qingdao, 266071, China. FAU - Huang, Longhua AU - Huang L AD - College of Textiles&Clothing, Qingdao University, Qingdao, 266071, China. FAU - Li, Xiaoshuang AU - Li X AD - College of Environmental Science and Engineering, Qingdao University, Qingdao, 266071, China. FAU - Liu, Fei AU - Liu F AD - College of Environmental Science and Engineering, Qingdao University, Qingdao, 266071, China. FAU - Zhang, Wei AU - Zhang W AD - College of Environmental Science and Engineering, Qingdao University, Qingdao, 266071, China. FAU - Wang, Zhe AU - Wang Z AD - College of Environmental Science and Engineering, Qingdao University, Qingdao, 266071, China. FAU - Xu, Yan AU - Xu Y AD - College of Environmental Science and Engineering, Qingdao University, Qingdao, 266071, China. FAU - Ke, Runhui AU - Ke R AD - China National Research Institute of Food&Fermentation Industries, Beijing, 10001, China. FAU - He, Hongping AU - He H AD - College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060, China. Electronic address: hehp@szu.edu.cn. FAU - Lou, Yinghua AU - Lou Y AD - College of Environmental Science and Engineering, Qingdao University, Qingdao, 266071, China. Electronic address: yinghualou@qdu.edu.cn. LA - eng PT - Journal Article DEP - 20220309 PL - England TA - Chemosphere JT - Chemosphere JID - 0320657 RN - 0 (Carbazoles) RN - 0 (Soil) RN - 0 (Water Pollutants, Chemical) SB - IM MH - Carbazoles/analysis MH - Environmental Monitoring MH - *Soil MH - Tibet MH - *Water Pollutants, Chemical/analysis OTO - NOTNLM OT - Altitudinal distribution OT - Composition characteristics OT - Concentration OT - Polyhalogenated carbazoles OT - Toxic equivalent evaluation EDAT- 2022/03/13 06:00 MHDA- 2022/05/07 06:00 CRDT- 2022/03/12 20:10 PHST- 2021/09/04 00:00 [received] PHST- 2022/02/28 00:00 [revised] PHST- 2022/03/02 00:00 [accepted] PHST- 2022/03/13 06:00 [pubmed] PHST- 2022/05/07 06:00 [medline] PHST- 2022/03/12 20:10 [entrez] AID - S0045-6535(22)00693-2 [pii] AID - 10.1016/j.chemosphere.2022.134200 [doi] PST - ppublish SO - Chemosphere. 2022 Jul;298:134200. doi: 10.1016/j.chemosphere.2022.134200. Epub 2022 Mar 9.