Due to their bioaccumulative and persistent nature, determination of PCB and organochlorine pesticide levels in human adipose tissue can be a useful biological indicator of exposure. The analytical methods previously used are relatively tedious, labor intensive and not readily amenable to automation. We have combined the use of sweep codistillation cleanup [1] and high resolution gas chromatogr...

Pesticides and other chemicals often have detrimental effects at environmental concentrations. Many amphibian species are particularly threatened because of their susceptibility but also because wetlands are often polluted. Behavioral assessments of toxicity have the advantage of showing sublethal effects but quantitative measures at varied scales of integrations are rarely considered together....

Persistent organochlorine residues in the environment are a threat to ecological health of aquatic organisms and pose risk both animals human consumers. Organochlorine pesticides were determined water sediments collected during wet dry season from selected riverine earthen fish pond sites high altitude catchment areas within Kuja River (Kenya) between August 2016–May, 2017. Analysis DDT metabol...

The effectiveness of three analyte protectants, namely, D-sorbitol, 3-ethoxy-1,2propanediol (ethoxypropanediol) and L-gulonic acid γ-lactone (gulonolactone) in improving peak shape of analytes for better peak sensitivity and quantitation during GC-MS analysis of pesticide residues were evaluated. The use of these analyte protectants were investigated with three pesticide groups i.e. organochlor...

Abstract Animal feed is typically plant-based and can contain pesticide residues. Methods for testing food samples, such as the Quick Easy Cheap Effective Rugged Safe (QuEChERS) method or Swedish Ethyl Acetate (SweEt) method, successfully extract many However, nonpolar pesticides, organochlorine show poor recovery when extracted from lipid-rich samples. The previously developed water-acetonitri...