Home > Research > Publications & Outputs > Sources and transformation pathways for dichlor...

Links

Text available via DOI:

View graph of relations

Sources and transformation pathways for dichlorodiphenyltrichloroethane (DDT) and metabolites in soils from Northwest Fujian, China

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Published

Standard

Sources and transformation pathways for dichlorodiphenyltrichloroethane (DDT) and metabolites in soils from Northwest Fujian, China. / Huang, Huanfang; Zhang, Yuan; Chen, Wei et al.

In: Environmental Pollution, Vol. 235, 04.2018, p. 560-570.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Harvard

APA

Vancouver

Huang H, Zhang Y, Chen W, Chen W, Yuen DA, Ding Y et al. Sources and transformation pathways for dichlorodiphenyltrichloroethane (DDT) and metabolites in soils from Northwest Fujian, China. Environmental Pollution. 2018 Apr;235:560-570. Epub 2018 Jan 8. doi: 10.1016/j.envpol.2017.12.071

Author

Bibtex

@article{e96af38efd514da69a53135cbaea702e,
title = "Sources and transformation pathways for dichlorodiphenyltrichloroethane (DDT) and metabolites in soils from Northwest Fujian, China",
abstract = "Dicofol (2,2,2-trichloro-1,1-bis-(p-chlorophenyl)ethanol) found in the environment is not only a miticide originated from commercial use, but also a metabolite of dichlorodiphenyltrichloroethane (DDT), which is often overlooked. To verify the sources and transformation pathways of DDT and related metabolites in soils, we measured p,p{\textquoteright}-(dicofol + DBP) (sum of p,p{\textquoteright}-dicofol and 4,4′-dichlorobenzophenone), DDT and six metabolites in soils from Northwest Fujian, China. The ratios of 1,1,1-trichloro-2-(o-chlorophenyl)-2-(p-chlorophenyl)ethane (o,p{\textquoteright}-DDT)/1,1,1-trichloro-2,2-bis-(p-chlorophenyl)ethane (p,p{\textquoteright}-DDT) and the mass balance demonstrated that p,p{\textquoteright}-(dicofol + DBP) predominantly originated from p,p{\textquoteright}-DDT transformation rather than from actual dicofol application. p,p{\textquoteright}-(dicofol + DBP) accounted for 45.0% as the primary metabolites of DDT in this study, more than 1,1-dichloro-2,2-bis-(p-chlorophenyl)ethylene (p,p{\textquoteright}-DDE) and 1,1-dichloro-2,2-bis-(p-chlorophenyl)ethane (p,p{\textquoteright}-DDD), which might lead to large overestimations of the fresh DDT input by using the traditional ratio of (∑2DDD + ∑2DDE)/∑2DDT (with all o,p{\textquoteright}- and p,p{\textquoteright}- isomers included). In paddy fields where the conditions alternate between aerobic (dry period) and anaerobic (wet period), both p,p{\textquoteright}-DDD and p,p{\textquoteright}-DDE were likely to degrade to 1-chloro-2,2-bis-(p-chlorophenyl)ethylene (p,p{\textquoteright}-DDMU), which further transformed to 2,2-bis(p-chlorophenyl)ethylene (p,p{\textquoteright}-DDNU). Degradation of p,p{\textquoteright}-DDMU to p,p{\textquoteright}-DDNU mainly occurred in waterlogged paddy soils. However, p,p{\textquoteright}-DDNU might not transform to other higher-order metabolites in aerobic surface soils. Overall, our study confirmed p,p{\textquoteright}-(dicofol + DBP) as metabolites of p,p{\textquoteright}-DDT, suggested DDE and DDD were parallel precursors of DDMU, and further verified the transformation pathways of DDT in surface soils.",
keywords = "Transformation pathways, Metabolites, DDT, Dicofol, Surface soil",
author = "Huanfang Huang and Yuan Zhang and Wei Chen and Wenwen Chen and Yuen, {Dave A.} and Yang Ding and Yingjie Chen and Yao Mao and Shihua Qi",
year = "2018",
month = apr,
doi = "10.1016/j.envpol.2017.12.071",
language = "English",
volume = "235",
pages = "560--570",
journal = "Environmental Pollution",
issn = "0269-7491",
publisher = "Elsevier Ltd",

}

RIS

TY - JOUR

T1 - Sources and transformation pathways for dichlorodiphenyltrichloroethane (DDT) and metabolites in soils from Northwest Fujian, China

AU - Huang, Huanfang

AU - Zhang, Yuan

AU - Chen, Wei

AU - Chen, Wenwen

AU - Yuen, Dave A.

AU - Ding, Yang

AU - Chen, Yingjie

AU - Mao, Yao

AU - Qi, Shihua

PY - 2018/4

Y1 - 2018/4

N2 - Dicofol (2,2,2-trichloro-1,1-bis-(p-chlorophenyl)ethanol) found in the environment is not only a miticide originated from commercial use, but also a metabolite of dichlorodiphenyltrichloroethane (DDT), which is often overlooked. To verify the sources and transformation pathways of DDT and related metabolites in soils, we measured p,p’-(dicofol + DBP) (sum of p,p’-dicofol and 4,4′-dichlorobenzophenone), DDT and six metabolites in soils from Northwest Fujian, China. The ratios of 1,1,1-trichloro-2-(o-chlorophenyl)-2-(p-chlorophenyl)ethane (o,p’-DDT)/1,1,1-trichloro-2,2-bis-(p-chlorophenyl)ethane (p,p’-DDT) and the mass balance demonstrated that p,p’-(dicofol + DBP) predominantly originated from p,p’-DDT transformation rather than from actual dicofol application. p,p’-(dicofol + DBP) accounted for 45.0% as the primary metabolites of DDT in this study, more than 1,1-dichloro-2,2-bis-(p-chlorophenyl)ethylene (p,p’-DDE) and 1,1-dichloro-2,2-bis-(p-chlorophenyl)ethane (p,p’-DDD), which might lead to large overestimations of the fresh DDT input by using the traditional ratio of (∑2DDD + ∑2DDE)/∑2DDT (with all o,p’- and p,p’- isomers included). In paddy fields where the conditions alternate between aerobic (dry period) and anaerobic (wet period), both p,p’-DDD and p,p’-DDE were likely to degrade to 1-chloro-2,2-bis-(p-chlorophenyl)ethylene (p,p’-DDMU), which further transformed to 2,2-bis(p-chlorophenyl)ethylene (p,p’-DDNU). Degradation of p,p’-DDMU to p,p’-DDNU mainly occurred in waterlogged paddy soils. However, p,p’-DDNU might not transform to other higher-order metabolites in aerobic surface soils. Overall, our study confirmed p,p’-(dicofol + DBP) as metabolites of p,p’-DDT, suggested DDE and DDD were parallel precursors of DDMU, and further verified the transformation pathways of DDT in surface soils.

AB - Dicofol (2,2,2-trichloro-1,1-bis-(p-chlorophenyl)ethanol) found in the environment is not only a miticide originated from commercial use, but also a metabolite of dichlorodiphenyltrichloroethane (DDT), which is often overlooked. To verify the sources and transformation pathways of DDT and related metabolites in soils, we measured p,p’-(dicofol + DBP) (sum of p,p’-dicofol and 4,4′-dichlorobenzophenone), DDT and six metabolites in soils from Northwest Fujian, China. The ratios of 1,1,1-trichloro-2-(o-chlorophenyl)-2-(p-chlorophenyl)ethane (o,p’-DDT)/1,1,1-trichloro-2,2-bis-(p-chlorophenyl)ethane (p,p’-DDT) and the mass balance demonstrated that p,p’-(dicofol + DBP) predominantly originated from p,p’-DDT transformation rather than from actual dicofol application. p,p’-(dicofol + DBP) accounted for 45.0% as the primary metabolites of DDT in this study, more than 1,1-dichloro-2,2-bis-(p-chlorophenyl)ethylene (p,p’-DDE) and 1,1-dichloro-2,2-bis-(p-chlorophenyl)ethane (p,p’-DDD), which might lead to large overestimations of the fresh DDT input by using the traditional ratio of (∑2DDD + ∑2DDE)/∑2DDT (with all o,p’- and p,p’- isomers included). In paddy fields where the conditions alternate between aerobic (dry period) and anaerobic (wet period), both p,p’-DDD and p,p’-DDE were likely to degrade to 1-chloro-2,2-bis-(p-chlorophenyl)ethylene (p,p’-DDMU), which further transformed to 2,2-bis(p-chlorophenyl)ethylene (p,p’-DDNU). Degradation of p,p’-DDMU to p,p’-DDNU mainly occurred in waterlogged paddy soils. However, p,p’-DDNU might not transform to other higher-order metabolites in aerobic surface soils. Overall, our study confirmed p,p’-(dicofol + DBP) as metabolites of p,p’-DDT, suggested DDE and DDD were parallel precursors of DDMU, and further verified the transformation pathways of DDT in surface soils.

KW - Transformation pathways

KW - Metabolites

KW - DDT

KW - Dicofol

KW - Surface soil

U2 - 10.1016/j.envpol.2017.12.071

DO - 10.1016/j.envpol.2017.12.071

M3 - Journal article

VL - 235

SP - 560

EP - 570

JO - Environmental Pollution

JF - Environmental Pollution

SN - 0269-7491

ER -