ORIGINAL RESEARCH
Air-Soil Exchange of Organochlorine Pesticides
in a Traditionally Agricultural Region in China:
Base on the Bark/Air Partitioning Model
1
Anhui Provincial Engineering Laboratory of Water and Soil Pollution Control and Remediation,
School of Ecology and Environment, Anhui Normal University, Wuhu, Anhui, 241002, PR China
2
Wuhu Dongyuan New Country Developing Co., Ltd., Wuhu, Anhui, 241000, PR China
3
Center of Cooperative Innovation for Recovery and Reconstruction of Degraded Ecosystem in Wanjiang City Belt,
Wuhu, Anhui, 241002, PR China
4
CAS Key Laboratory of Crust-Mantle Materials and Environment, School of Earth and Space Sciences,
University of Science and Technology of China, Hefei, Anhui 230026, China
Submission date: 2023-05-24
Final revision date: 2023-11-21
Acceptance date: 2023-12-09
Online publication date: 2024-04-09
Publication date: 2024-04-18
Corresponding author
Xiaoguo Wu
Anhui Normal University, College of Environmental Science and Engineering, , 241002, Wuhu, China
Anhui Normal University, College of Environmental Science and Engineering, , 241002, Wuhu, China
Pol. J. Environ. Stud. 2024;33(4):3917-3926
KEYWORDS
TOPICS
ABSTRACT
Willow barks were collected for OCP analyses in the middle reach of the Huaihe River (MRHR), China.
ΣOCPs in the tree barks were 16.00-50.35 ng g-1 (mean: 27.60±7.48 ng g-1, dry weight). HCHs were
the dominant OCPs in the bark samples. The historical usage of technical HCH and DDT considerably
impacted the HCHs and DDTs in the barks. Heptachlor, Aldrin, Isodrin, etc., have never been used
in China, but they were frequently detected in the barks, indicating their unknown usage
or atmospheric transportation from other source regions. Volumetric air concentrations of OCPs
were estimated using a model for bark/air partitioning. Calculated air concentrations of ΣDDTs
and ΣHCHs were 0.16±0.04 and 10.38±4.13 ng m-3, respectively. The results of air-soil exchange were:
HCB, HCHs, and Heptachlor presented net volatilization; DDTs preferred net deposition; Endosulfan-I
and Endosulfan-II might be in equilibrium or presented a weak trend of deposition; and Aldrin was
in equilibrium.
| eISSN: | 2083-5906 |
| ISSN: | 1230-1485 |
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