Dissipation of alachlor in cotton plant, soil and water and its bioaccumulation in fish

Ramesh, Atmakuru; Maheswari, S.

doi:10.1016/j.chemosphere.2003.08.008

Cited by 32 publications

(15 citation statements)

References 6 publications

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“…For the degradation of S-metolachlor in cotton leaves, besides the effect of some physical and chemical factors such as light, heat, pH and moisture, the growth dilution factor might have played a significant role. The growth dilution factor was different at different climate and different stage of plant growth (Ramesh and Maheswari 2004).…”

Section: Discussionmentioning

confidence: 99%

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GC–ECD analysis of S-metolachlor (Dual Gold) in cotton plant and soil in trial field

Cao

Liu

Wang

et al. 2007

Environ Monit Assess

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The analytical method of S-metolachlor residue and its degradation in cotton and soil in trial field were investigated. S-metolachlor EC (96% w/w) was applied as pre-emergence at dosages of 1,500 and 2,250 ml ha(-1) 3 days after sowing of the cottonseeds in the field. The soil and the plant samples were collected at different intervals and the residues of S-metolachlor were analyzed by GC-ECD. The results showed that the degradation of S-metolachlor in cotton leaves in Beijing and Nanjing coincides with C = 0.1113e(-0.1050t) and C = 0.1177e(-0.1580t), respectively; the half-lives were about 6.6 and 4.4 days. The degradation of S-metolachlor in soil in Beijing and Nanjing coincides with C = 1.0621e(-0.0475) (t), and C = 0.9212e(-0.0548) (t), respectively; the half-lives were about 14.6 and 12.6 days,. At harvest time, the S-metolachlor in cotton seeds and soil samples were detected by GC-ECD and confirmed by GC/MS. The results showed that the residues in cottonseeds were lower than the USA EPA's maximum residue limit of 0.1 mg kg(-1) in cottonseed. It could be considered as safe to human beings and environment.

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Section: Discussionmentioning

confidence: 99%

“…Several reports are available in literature about the detection of the similar compounds of S-metolachlor in cotton or soil. Ramesh and Maheswari (2004) observed dissipation of alachlor in cotton, soil and water and its bioaccumulation in fish. Ma et al (2006) found S-metolachlor degraded faster in soil than rac-metolachlor.…”

Section: Introductionmentioning

confidence: 92%

GC–ECD analysis of S-metolachlor (Dual Gold) in cotton plant and soil in trial field

Cao

Liu

Wang

et al. 2007

Environ Monit Assess

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“…It is soluble in organic solvent like ethanol, acetone and chloroform and slightly soluble in water. Several analytical methods have been established for other active ingredients for pakchoi (Wang et al 2008;Tao et al 2010), cotton (Ramesh and Maheswari 2004;Liu et al 2008;Guo et al 2010) and their environmental system. However, little was known about the determination method of DA-6 in pakchoi and cotton, nor was the residue dissipation of this compound measured under supervised field trials.…”

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confidence: 99%

Dissipation of Diethyl Aminoethyl Hexanoate (DA-6) Residues in Pakchoi, Cotton Crops and Soil

Jiang

et al. 2012

Bull Environ Contam Toxicol

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QuEChERS procedure and acetonitrile extraction, oscillation and ultrasonic procedure followed by GC-MS and LC-MS/MS (QqQ) detections were established for determination of diethyl aminoethyl hexanoate (DA-6) residues in pakchoi, cotton leaf, cotton seed and soil. At concentration levels of 0.005-1 mg kg(-1), recoveries were in the range of 80.5%-103.3%, with a RSD less than 14.2%. The LOQs of methods were 0.005, 0.003, 0.005 and 0.001 mg kg(-1) for the pakchoi, cotton leaf, soil and cotton seed samples, respectively. DA-6 was applied in supervised field trials at GAP conditions to pakchoi and cotton. It was found that the dissipation half-lives of DA-6 were 5.4-8.2 days and 1.1-2.2 days and 1.5-1.9 days in cotton crop, pakchoi and soil respectively. At harvest, no detectable residues (

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“…The experiment was carried out using a static-renewal regimen, half of the exposure solution was renewed daily to ensure the stabilization of test substance concentrations. Alachlor was measured by gas chromatograph with electron capture detector (Ramesh and Maheswari 2004).…”

Section: Methodsmentioning

confidence: 99%

Altered Serum Levels of Sex Steroids and Biotransformation Enzyme Activities by Long-term Alachlor Exposure in Crucian Carp (Carassius auratus)

Liu

et al. 2007

Bull Environ Contam Toxicol

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Dissipation of alachlor in cotton plant, soil and water and its bioaccumulation in fish

Cited by 32 publications

References 6 publications

GC–ECD analysis of S-metolachlor (Dual Gold) in cotton plant and soil in trial field

GC–ECD analysis of S-metolachlor (Dual Gold) in cotton plant and soil in trial field

Dissipation of Diethyl Aminoethyl Hexanoate (DA-6) Residues in Pakchoi, Cotton Crops and Soil

Altered Serum Levels of Sex Steroids and Biotransformation Enzyme Activities by Long-term Alachlor Exposure in Crucian Carp (Carassius auratus)

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