摘要
采用气相色谱质谱法测定食用油、蔬菜水果类、水产畜禽肉类、乳类及酒水饮料类的5类食品中塑化剂-邻苯二甲酸二丙酯(DPRP)和邻苯二甲酸己酯2-乙基己基酯(HEP)的测定,提取试剂的选择分别为乙腈、正己烷乙醚乙腈混合醚及正己烷乙酸乙酯混合醚,采用超声提取;SILICA/PSA玻璃固相萃取小柱净化;对样品前处理、色谱/质谱条件的选择、色谱柱的选择进行了讨论,线性范围为0.05μg/mL^1.00μg/mL,并在浓度范围内有良好的线性关系,r=0.998 6~0.999 9,方法检出限为0.15 mg/kg,在此浓度的试验相对标准偏差1.6%~5.9%,方法回收率为83.2%~117%。方法简便、快速、灵敏,适用于测定食品中邻苯二甲酸二丙酯(DPRP)和邻苯二甲酸己酯2-乙基己基酯(HEP)。
A method based on gas chromatography mass spectrometric （GC-MS） was adopted to determinate 2 phthalate acidesters （PAEs） in food, namely DPRP and HEP. In this paper, food is divided into five overall categories. Aquatic products andanimal products is the first category, vegetables and fi＇uits are the second, alcohol and beverage is the third. Edible oil and dairyproducts came fourth and fifth respectively, then purified with SILICA/PSA glass column caped with approximately 1 cm anhydroussodium sulfate on the top. Sample pretreatment and the selections of various experimental conditions were investigated. Thelinear ranges of 2 phthalic acid esters were in the range of 0.05 mg/L-1.00 mg/L with the correlation coefficients （r） in therange of 0.998 64）.999 9. The average recoveries of 2 phthalic acid esters in five different categories of foodstuff were in therange of 83.2%-117% and relative standard deviations RSDs （n=6） were 1.6%-5.9%. The detection limit of 2 phthalic acidester was 0.15 mg/kg. The method with high sensitivity was simple and rapid. It was suitable for the determination of 2phthalate esters （DPRP ＆ HEP） in foodstuff.
出处
《食品工业》
北大核心
2014年第6期266-269,共4页
The Food Industry
