Monitoring of pesticide residues in a cotton crop soil

This paper reports on the residues of methyl parathion (O,O-dimethyl O-4-nitrophenyl phosphorothioate), trifluralin (α, α, α-trifluoro-2, 6-dinitro-N, N-dipropyl-p-toluidine), endosulfan [(1, 4, 5, 6, 7, 7-hexachloro-8, 9, 10-trinorborn-5-en-2, 3-ylenebismethylene) sulfite] and dimethoate (O, O-dime...

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Bibliographic Details
Published in:Journal of environmental science and health. Part B, Pesticides, food contaminants, and agricultural wastes Pesticides, food contaminants, and agricultural wastes, 2000, Vol.35 (1), p.51-59
Main Authors: Luchini, L.C, Peres, T.B, Andrea, M.M. de
Format: Article
Language:English
Subjects:
Agronomy. Soil science and plant productions
Analysis methods
Applied sciences
Biological and medical sciences
clean up
degradation
dimethoate
Dimethoate - analysis
endosulfan
Endosulfan - analysis
Environmental Monitoring - methods
Exact sciences and technology
extraction
Fundamental and applied biological sciences. Psychology
Gossypium - chemistry
Gossypium hirsutum
Humans
Insecticides - analysis
metabolites
methyl parathion
Methyl Parathion - analysis
Multiresidue analysis
parathion-methyl
pesticide residues
Pesticide Residues - analysis
pesticides
Pollution
recovery
soil
Soil - analysis
Soil and sediments pollution
Soil and water pollution
Soil science
soxhlet extraction
trifluralin
Trifluralin - analysis
tropical soils
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Summary:This paper reports on the residues of methyl parathion (O,O-dimethyl O-4-nitrophenyl phosphorothioate), trifluralin (α, α, α-trifluoro-2, 6-dinitro-N, N-dipropyl-p-toluidine), endosulfan [(1, 4, 5, 6, 7, 7-hexachloro-8, 9, 10-trinorborn-5-en-2, 3-ylenebismethylene) sulfite] and dimethoate (O, O-dimethyl S-methylcarbamoylmethyl phosphorodithioate) in a cotton crop soil. Soil samples (0-15 cm) were collected at different periods from the cotton crop farm and subjected to Soxhlet extraction. The extracted material was analysed after clean-up by a HP5890 II gas Chromatograph equipped with a 63 Ni electron-capture detector (ECD- 63 Ni) and fitted with a 25m x 0,2mm i.d. fused silica capillary column [Ultra-2 (5% phenylmethyl polysiloxane)]. The recoveries of the pesticide residues from the spiked control soil were determined after Soxhlet extraction and C 18 cartridges clean-up by using radiotracer techniques with the corresponding 14 C-pesticides. The results show that in the cotton crop soil the pesticide residues under study were present in the range of 0.1 to 0.4 mg * kg -1 . Endosulfan was found to be rapidly degraded in the soil and formed a sulfate metabolite.
ISSN:0360-1234
1532-4109
DOI:10.1080/03601230009373253