帮助 本站公告
您现在所在的位置:网站首页 > 知识中心 > 文献详情
文献详细Journal detailed

液相微萃取-气质联用法在增塑剂测定中的应用和对比
Comparison of Determination Methods for Phthalates by Liquid-Phase Microextraction Coupled Gas Chromatograph-Mass spectrometry

作  者: ; ; ; ;

机构地区: 广东医学院药学院

出  处: 《分析化学》 2013年第10期1582-1586,共5页

摘  要: 对比并优化3种液相微萃取模式:静态直接浸入法、动态直接浸入法和中空纤维膜法,并与气相色谱-质谱联用检测饮品中邻苯二甲酸酯类。静态直接浸入法以2.0μL甲苯-环己烷(3:1,V/V)混合溶剂微滴在500r/min转速下静态萃取40min,动态直接浸入法以2.0乩甲苯微滴在400r/min转速下,以1次/min的活塞抽打速率抽打25次,中空纤维膜法以20止辛醇在800r/min转速下萃取30min。3种方法检测水体中邻苯二甲酸二甲酯、邻苯二甲酸二乙酯、邻苯二甲酸二正丁酯以及邻苯二甲酸丁基卞基酯的线性范围、相对标准偏差分别为0.50~500μg/L(3.01%~13.7%),0.10—10μg/L(17.3%~23.1%)及0.10—100μg/L(8.10%~15.5%)。应用于实际饮品中邻苯二甲酸酯类的测定,3种方法的回收率分别为89.5%~115.2%,70.6%~91.0%和91.5%~112.8%。 Three kinds of liquid-phase microextraction (LPME) methods, including static direct-immersed LPME ( SDI-LPME ), dynamic direct-immersed LPME ( DDI-LPME ) and hollow fiber LPME ( HF-LPME ) coupled with gas chromatograph-mass spectrometry (GC-MS) for the determination of phthalic acid esters (PAEs) in drink were compared. The optimized conditions of the three kinds of method were as follows: for SDI-LPME, the samples were extracted with 2.0 μL of the mixture of toluene and cyclohexane(3:l, V/V) for 40 min at 500 r/min rotating speed; for DDI-LPME, the samples were extracted with 2.0 μL toluene at 400 r/min rotating speed and whipping 25 times at a rate of once a minute ; for HF-LPME, the samples were extracted with 20 μL octyl alcohol for 30 rain at 800 r/rain rotating speed. The linear ranges and the relative standard deviation of the three methods are 0. 50-500 μg/L(3.0% -13.7% ), 0. 100-10.0 μg/L( 17.3% - 23.1% ) and 0.100-100. 0 μg/L (8.1% -15.5 % ), respectively, for the determination of dimethyl phthalate (DMP), diethyl phthalate (DEP), dibutyl phthalate (DBP) and butyl benzyl phthalate (BBP), and the standard addition recoveries were 89.5% -115.2% , 70.6% -91.0% , 91. 5% -112.8% , respectively, in real drink sample analysis.

关 键 词: 液相微萃取 静态直接浸入液相微萃取 动态直接浸入液相微萃取 中空纤维膜液相微萃取 邻苯 二甲酸酯类

领  域: [理学] [理学]

相关作者

作者 王正平

相关机构对象

机构 广州大学

相关领域作者

作者 刘广平
作者 彭刚
作者 杨科
作者 陈艺云
作者 崔淑慧