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

Chemosphere
Rahul MondalRamen Kumar Kole

Abstract

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 R2 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 (hexachlorocyclohexane) from old source and fresh use of DDTs (dichlorodiphenyltrichloroethane) in local areas. No OC insecticides were detected in pond and tubewell water. Maximum residues of some recommended pesticides in ...Continue Reading

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Citations

Sep 6, 2019·Water Environment Research : a Research Publication of the Water Environment Federation·Patrick Amoatey, Mahad Said Baawain
Nov 30, 2019·Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes·Aline Romero-NataleEduardo Torres
Sep 24, 2019·Water Environment Research : a Research Publication of the Water Environment Federation·Merin Sackaria, Lakshmanan Elango
Jul 8, 2020·International Journal of Environmental Research and Public Health·Surat HongsibsongZhen-Lin Xu
Nov 6, 2020·Archives of Environmental Contamination and Toxicology·Patricia M GuardaJosé E C da Silva
May 4, 2021·Frontiers in Chemistry·Mindy Levine
Jun 6, 2021·Environmental Pollution·Diana P Manjarres-LópezEliseo Herrero-Hernández
Aug 26, 2021·Heliyon·Zeshan Umar Shah, Saltant Parveen

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