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Residue Dynamics and Risk Assessment of Prochloraz and Its Metabolite 2,4,6-Trichlorophenol in Apple

Residue Dynamics and Risk Assessment of Prochloraz and Its Metabolite 2,4,6-Trichlorophenol in Apple

Qingkui Fang, Gengyou Yao, Yanhong Shi, Chenchun Ding, Yi Wang, Xiangwei Wu, Rimao Hua, Haiqun Cao

Molecules. 2017 Oct 20;22(10):1780.

PMID: 29053615

Abstract:

The residue dynamics and risk assessment of prochloraz and its metabolite 2,4,6-trichlorophenol (2,4,6-TCP) in apple under different treatment concentrations were investigated using a GC-ECD method. The derivatization percent of prochloraz to 2,4,6-TCP was stable and complete. The recoveries of prochloraz and 2,4,6-TCP were 82.9%-114.4%, and the coefficients of variation (CV) were 0.7%-8.6% for the whole fruit, apple pulp, and apple peel samples. Under the application of 2 °C 2.0 g/L, 2 °C 1.0 g/L, 20 °C 2.0 g/L, and 20 °C 1.0 g/L treatment, the half-life for the degradation of prochloraz was 57.8-86.6 d in the whole fruit and apple peel, and the prochloraz concentration in the apple pulp increased gradually until a peak (0.72 mg·kg-1) was reached. The concentration of 2,4,6-TCP was below 0.1 mg·kg-1 in four treatment conditions and not detected (

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP139520948	Prochloraz Metabolite BTS44595		139520-94-8	Price

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