摘要
采用溶剂提取活性白土中的3种塑化剂(DBP、DEHP、DINP),提取液经SPE柱净化后,进气相色谱-质谱仪测定。以3种塑化剂的含量为考察指标,对活性白土中塑化剂含量测定的前处理条件进行了单因素实验和正交实验优化。结果表明,活性白土中塑化剂含量测定的最佳前处理条件为:甲醇饱和的正己烷溶液为提取溶剂,提取溶剂用量5 mL(活性白土1 g),提取时间3 min,提取温度20℃。在最佳前处理条件下,活性白土中3种塑化剂DEHP、DINP、DBP的含量分别为3.621、0.004、0.078 mg/kg。
Three plasticizers DBP,DEHP and DINP in activated clay were extracted with solvent,and the extracts were cleaned up by SPE column and injected into gas chromatography-mass spectrometer for determination.The content of three plasticizers was used as an indicator,and the pretreatment conditions for determining plasticizer content in activated clay were optimized by single factor experiment and orthogonal experiment.The results showed that the optimal pretreatment conditions for the determination of plasticizer content in activated clay were obtained as follows:methanol-saturated n-hexane used as extraction reagent and its dosage 5 mL(activated clay amount 1 g),extraction time 3 min,and extraction temperature 20℃.Under the optimal conditions,the contents of DEHP,DINP and DBP in activated clay were 3.621,0.004,0.078 mg/kg,respectively.
作者
杜威
陈宁
DU Wei;CHEN Ning(School of Modern Agriculture,Linyi Vocational University of Science and Technology,Linyi 276000,Shandong,China;Shandong Jinsheng Cereals&Oils Foods Co.,Ltd.,Linyi 276699,Shandong,China)
出处
《中国油脂》
CAS
CSCD
北大核心
2021年第11期110-113,共4页
China Oils and Fats
关键词
塑化剂
活性白土
气相色谱-质谱法
前处理
plasticizer
activated clay
gas chromatography-mass spectrometry
pretreatment
