固相萃取 固相微萃取- 气相色谱法测定饮用水中多溴联苯醚_何迎春.pdf

2012,, 食品科学※分析检测 236 固相萃取/固相微萃取-气相色谱法测定饮用水中多溴联苯醚何迎春 1,王正虹 2,李林 1,*,周倩如 2 (,重庆400716;,重庆 400042) 摘要:目的:建立固相萃取/固相微萃取-气相色谱法测定饮用水中多溴联苯醚(BDE-47和BDE-99)含量的新方法。方法:固相萃取-气相色谱直接取水样100mL,过LC-C 18柱,经正己烷洗脱,洗脱液于80℃水浴挥干,异辛烷定容至1mL,直接进样1μL测定,该法对BDE-47和BDE-/L,,RSD(n=6)%~%%~%;固相微萃取-气相色谱直接取水样10mL置于15mL固相微萃取瓶中,于40℃条件下固相微萃取吸附25min后,纤维头经风干,立即进样测定。该法对BDE-47和BDE-/L,,RSD (n=6)%~%%~%。结果:随机抽样某市52个水样进行检测,均未检出BDE-47和BDE- 99。结论:建立饮用水中多溴联苯醚固相萃取/固相微萃取-气相色谱检测的新方法,两种方法操作简便、快速, 精密度、准确度及回收率均令人满意。关键词:固相萃取;固相微萃取;气相色谱;多溴联苯醚;饮用水 DeterminationofPolybrominatedDiphenylEthersinDrinkingWaterbySolidPhaseExtractionorSolid-phase Micro-binedwithGasChromatography HEYing-chun 1,WANGZheng-hong 2,LILin 1,*,ZHOUQian-ru 2 (,SouthwestUniversity,Chongqing 400716,China; ,Chongqing 400042,China) Abstract:Objective:Toestablishanovelmethodfordeterminingthecontentsofpolybrominateddiphenylethers(BDE-47 andBDE-99)indrinkingwaterbysolidphaseextraction(SPE)orsolidphasemicroextraction(binedwithgas chromatography(GC).Methods:IntheSPE-GCmethod,100mLofwatersamplewaspurifiedbyLC-C 18SPEcolumn ℃,andtheremaining residuewasre-di