Distribution characteristics of organochlorine pesticide in the water environment in Lanzhou section of Yellow River

3rd International Conference on Energy Materials and Environment Engineering

能源学;生态环境科学

Yang, L.^1 ; Zhao, X.^1 ; Shen, J.M.^2 ; Chen, Z.L.^2 ; Wang, X.C.^2 ; Qiu, H.R.^1

College of Petrochemical Technology, Lanzhou University of Technology, Lanzhou

730050, China^1

State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin

150090, China^2

关键词: Component analysis;    Correlation analysis;    Distribution characteristics;    Organochlorine pesticides;    Surface sediments;    Suspended particles;    Total Organic Carbon;    Water environments;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/61/1/012016/pdf
DOI  :  10.1088/1755-1315/61/1/012016

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Surface water, surface sediments and suspended particles in the Lanzhou section of Yellow River were collected. After the samples were lyophilised, extracted, concentrated, purified and separated, organochlorine pesticides in the samples were analysed by GC-MS. Results showed that organochlorine pesticide contents in surface water, surface sediments and suspended particles ranged from 28.63 ng/L to 123.2 ng/L, from 0.86 ng/g to 4.51 ng/g and from 23.29 ng/g to 126.14 ng/g, respectively. HCHs, DDTs and HCB were high; among these contents, HCH contents ranged from 1.49 ng/L to 18.1 ng/L, from 0.04ng/g to 1.53 ng/g and from 2.74ng/g to 25.64 ng/g, respectively. DDT contents ranged from 1.49 ng/Lto 18.1 ng/L, from 0.04 ng/g to 1.53 ng/g and from 2.74 ng/g to 25.64 ng/g, respectively. Component analysis results showed that organochlorine pesticide in the Lanzhou section of Yellow River was mainly from early residues or soil after pesticides were applied and long-term weathering occurred. Correlation analysis results showed that total organic carbon was an important factor affecting the distribution of organochlorine pesticide in sediments. Moderate organochlorine pesticide contents were detected in surface water in Lanzhou section of Yellow River compared with other rivers in our country and in other countries. Furthermore, the ecological risk of organochlorine pesticide in surface sediments was low.