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中文会议>第五届全国环境化学大会会议
>Determination of Estrogens and Bisphenol A in Bovine Milk by Automated on-line C30 Solid-phase Extraction Coupled with High-performance Liquid Chromatography-mass Spectrometry
Determination of Estrogens and Bisphenol A in Bovine Milk by Automated on-line C30 Solid-phase Extraction Coupled with High-performance Liquid Chromatography-mass Spectrometry
Using triacontyl bonded silica（C30) as on-line solid-phase extraction（SPE) material and a specially designed online analytical system which allowed large sample volume injection，a high speed and robust online SPE-HPLC-MS method was established for the analysis of five estrogens and bisphenol A（BPA) in milk samples. The milk sample is pretreated with acetonitrile for protein precipitation and then treated with primary secondary amine for the removal of polar impurities in the matrix. Then the pretreated sample can be automatically loaded by a LC pump.
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