GC-MS/MS determination and ecological risk assessment of pesticides in aquatic system: A case study in Hooghly River basin in West Bengal, India

被引：85

作者：

Mondal, Rahul ^{[1
]}

Mukherjee, Ayan ^{[2
]}

Biswas, Subrata ^{[3
]}

Kole, Ramen Kumar ^{[1
]}

机构：

[1] Bidhan Chandra Krishi Viswavidyalaya, Fac Agr, Dept Agr Chem, Nadia 741252, W Bengal, India

[2] Visva Bharati, Palli Siksha Bhavana, Inst Agr, Dept Soil Sci & Agr Chem, Birbhum 731236, W Bengal, India

[3] Univ Kalyani, Dept Chem, Nadia 741235, W Bengal, India

来源：

CHEMOSPHERE | 2018年 / 206卷

关键词：

GC-MS/MS; Pesticide residues; Water; Sediment; Ecological risk; PERSISTENT ORGANIC POLLUTANTS; SOLID-PHASE EXTRACTION; ORGANOCHLORINE-PESTICIDES; SURFACE-WATER; LAND-USE; AGRICULTURAL STREAMS; GROUND-WATER; 1ST FLUSH; RESIDUES; MITIGATION;

D O I：

10.1016/j.chemosphere.2018.04.168

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

A liquid-liquid extraction (LLE) for water and modified QuEChERS (quick, easy, cheap, effective, rugged, and safe) method for sediment combined with gas chromatography-tandem mass spectrometry (GC-MS/MS) detection in multiple reaction monitoring (MRM) mode was standardized for determination of 31 pesticides. Performance characteristics for the selected pesticides were acceptable according to European Commission's (EC) guidelines for method validation (recovery 70-120%, RSD <20% and R-2 value >= 0.99). River, pond and tubewell water and river sediment samples (64 nos.) were collected from Hooghly River basin in West Bengal, India during 2014-2016. About 42% of the samples showed the presence of 19 pesticides with the highest loading of total pesticides (T-pesticides) in river water (3.01 ng mL(-1)) followed by sediment (1.25 ng g(-1)), pond (0.40 ng mL(-1)) and tubewell (0.02 ng mL(-1)) water. The non-agricultural OC (organochlorine) insecticides were detected in all river water and sediment samples mainly due to HCHs (hexaclilorocyclohexane) from old source and fresh use of DDTs (dichlor-odiphenyltrichloroethane) in local areas. No OC insecticides were detected in pond and tubewell water. Maximum residues of some recommended pesticides in agriculture were obtained in pond water. Most of the river water samples (93.7%) were in excess of EC limit (0.50 ng mL(-1)) of T-pesticides for drinking followed by pond water samples (56.2%). Tubewell water samples were free from T-pesticide threat but exceeded the EC limit (0.10 ng mL(-1)) for single pesticide in case of chlorpyrifos only. Ecological risk on aquatic animals was observed for OCs in river and chlorpyrifos in pond aquatic ecosystem. (C) 2018 Elsevier Ltd. All rights reserved.

引用

页码：217 / 230

页数：14

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