固相萃取-衍生化-气相色谱质谱法测定水中9种烷基酚类化合物  

Determination of 9 alkylphenols in water by SPE-derivatization-GC-MS

作　　者：李昆[1] 刘盈斐[1] 徐静[1] 赵晓辉[1] LI Kun;LIU Yingfei;XU Jing;ZHAO Xiaohui(China institute of water resources and hydropower research,Beijing 100038,China)

机构地区：[1]中国水利水电科学研究院,北京100038

出　　处：《化学分析计量》2023年第1期50-55,共6页Chemical Analysis And Meterage

摘　　要：针对地表水、地下水及饮用水中9种烷基酚类化合物的含量检测,建立了一种适合于气相色谱-质谱分析的衍生化方法。分别对样品预处理的衍生化温度、反应时间、水体样品pH、洗脱溶剂类型及用量进行优化。优化结果表明,烷基酚类化合物的质量浓度在20.0~1000μg/L范围内与色谱峰面积具有良好的线性关系,线性相关系数均不低于0.9991,方法检出限为4.49~9.46 ng/L。地表水、地下水及饮用水样品加标回收率为77.6%~98.8%,测定结果的相对标准偏差不大于11.4%(n=7)。该方法适用于地表水、地下水及饮用水中烷基酚类化合物的检测。A derivatization method suitable for gas chromatography mass spectrometry(GC-MS)was established for the determination of 9 alkylphenols(APs)in water.The derivatization temperature,pH,reaction time and extractant dosage in the pretreatment were optimized.The mass concentration of APs had a good linear relationship with its chromatographic peak area in the range of 20.0-1000μg/L.The optimization results showed that the detection limit was ranged from 4.49 ng/L to 9.46 ng/L,the recovery rate of APs in surface water,ground water and grinking water was 77.6%-98.8%,and the relative standard deviation was not more than 11.4%(n=7).The improved method is suitable for the determination of APs in water.

关 键 词：烷基酚类化合物 固相萃取 衍生化 气相色谱-质谱法 

分 类 号：O657[理学—分析化学]