顶空固相微萃取-气相色谱法测定辣椒根系分泌物中邻苯二甲酸酯类化合物

被引：8

作者：

孙海燕 ^{[1
,2
]}

王炎 ^{[1
]}

机构：

[1] 哈尔滨工业大学理学中心

[2] 黑龙江八一农垦大学测试中心

来源：

理化检验(化学分册) | 2014年 / 50卷 / 04期

基金：

黑龙江省自然科学基金;

关键词：

顶空固相微萃取; 气相色谱法; 辣椒; 根系分泌物; 邻苯二甲酸酯类化合物;

D O I：

暂无

中图分类号：

S641.3 [辣椒]; O657.63 [质谱分析];

学科分类号：

090202 ; 070302 ; 081704 ;

摘要：

用顶空固相微萃取法提取样品中5种邻苯二甲酸酯类化合物（PAEs）,用气相色谱法测定其含量。移取水栽培法培育辣椒的营养液10mL,置于顶空瓶中,进行固相微萃取到达要求的时间后,将萃取头迅速插入色谱仪进样口进行解吸。选用65μm PDMS/DVB纤维头作为微萃取头,并在下述条件下进行固相微萃取:①萃取时间及温度:50min,80℃;②样品体积:10mL;③搅拌速率:1 000r·min-1;④样品溶液的离子强度:氯化钠加入量达18%;⑤溶液的酸度:近中性,样品溶液的原始酸度（pH 6.5～7.2）正符合此要求;⑥解吸温度和时间:250℃,10min。结果表明:5种PAEs的线性范围均在0.2～10mg·L-1之间,检出限（3S/N）均小于0.12mg·L-1。方法的回收率在83.4%105%之间,测定值的相对标准偏差（n=5）均小于9%。

引用

页码：447 / 451

页数：5

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