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J Environ Sci Health B. 2016 Sep;51(9):628-33. doi: 10.1080/03601234.2016.1181913. Epub 2016 May 26.

Dissipation kinetics of alpha-cypermethrin and lambda-cyhalothrin residues in aboveground part of white mustard (Sinapis alba L.).

Author information

1
a Regional Experimental Station, Laboratory of Pesticide for Residue Analysis, Institute of Plant Protection-National Research Institute , Rzeszów , Poland.

Abstract

Dissipation of simultaneously applied insecticides alpha-cypermethrin and lambda-cyhalothrin was studied in a minor crop, aboveground part of white mustard (Sinapis alba L.). A validated gas chromatographic method (GC-ECD/NPD) was used to determine insecticide residues. Analytical performances were very satisfactory, with expanded uncertainties not higher than 14% (coverage factor k = 2, confidence level 95%). Dissipation of alpha-cypermethrin and lambda-cyhalothrin in white mustard followed first-order kinetics (R(2) between 0.953 and 0.995), with half-lives of 3.1-4.6 and 2.9-3.7 days respectively. Based on the results of this two-year study and the relevant residue regulation, alpha-cypermethrin and lambda-cyhalothrin treatments can be considered safe for crop protection, feeding animals and the environment.

KEYWORDS:

Dissipation; alpha-cypermethrin; lambda-cyhalothrin; pesticide residues; white mustard

PMID:
27229135
DOI:
10.1080/03601234.2016.1181913
[Indexed for MEDLINE]

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