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Dissipation behavior of chlorpyrifos residues and risk assessment in sugarcane fields



Dissipation behavior of chlorpyrifos residues and risk assessment in sugarcane fields



Biomedical Chromatography 33(3): E4424



As chlorpyrifos is used globally to control pests in sugarcane fields, analysis of its residues on food crops is essential to assess product safety for humans. In this study, chlorpyrifos content in sugarcane plants, soil and juice was determined using a gas chromatography with an electron capture detector. The limit of quantification was 0.01 mg/kg for plant and soil, and 0.01 mg/L for juice. The degradation and residual risk in sugarcane fields after applying chlorpyrifos to two sample sites (Changsha and Danzhou, China) were assessed. Chlorpyrifos concentrations in plants and soil decreased rapidly over time, reaching a degradation rate ranging from 98.82 to 99.25% on day 35. The half-life of chlorpyrifos in both plants and soil was only 5.97-6.12 days. Regardless of application dosage (standard or high) at a pre-harvest interval of 60 days, chlorpyrifos was undetectable in the harvested sugarcane. Risk assessment indicated that chlorpyrifos residue in sugarcane did not pose a health risk to humans.

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Accession: 065757183

Download citation: RISBibTeXText

PMID: 30403410

DOI: 10.1002/bmc.4424


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