碳点基固相微萃取涂层测定水体中邻苯二甲酸酯  

Determination of Phthalate Acid Ester in Water by Carbon Nanodots-based SPME Coating

作　　者：陈秀林 田彤 吴剑锋[1] 赵广超[1] CHEN Xiu-lin;TIAN Tong;WU Jian-feng;ZHAO Guang-chao(School of Environmental Science and Engineering,Anhui Normal University,Anhui Wuhu 241000,China;Shanghai Chemical Monitoring Station for Environment Protection,Shanghai 201540,China)

机构地区：[1]安徽师范大学环境科学与工程学院,安徽芜湖241000 [2]上海市化工环境保护监测站,上海金山201540

出　　处：《当代化工》2020年第3期753-756,共4页Contemporary Chemical Industry

摘　　要：利用溶胶-凝胶法制备了纳米碳点基固相微萃取涂层,建立了固相微萃取-气相色谱法(SPME-GC)测定水体中四种邻苯二甲酸酯的方法,优化了方法条件。结果表明,在优化条件下,方法线性范围2.5~200μg/L内线性良好(R^2=0.9903~0.9981),检出限为0.83~1.81μg/L(远低于国标0.09~2.70 mg/L),相对标准偏差1.4%~9.8%。在5和10 g/L加标浓度水平下,水样的加标回收率为82.2%~121.3%,相对标准偏差2.6%~9.7%。建立的方法满足实际水样的分析要求。A carbon nanodots-based solid-phase microextraction(SPME)coating was prepared using a sol-gel technique.Coupled with gas chromatography(GC),an analytical method for the determination of phthalate acid ester(PAEs)in water was proposed.The experimental parameters were optimized.The results showed that the prepared coating extracted target analytes with good linearity in the wide concentration range from 2.5μg/L to 200μg/L,with the correlation coefficient(R^2)of 0.9903~0.9981.The detection limit of proposed method was from 0.83μg/L to1.81μg/L(which was far lower than the national standard of 0.09~2.70 mg/L)and the relative standard deviation(RSD)was between 1.4%and 9.8%.In the level of 5~10μg/L,spiked recoveries for four PAEs in water samples were in the range from 82.2%to 121.3%with RSDs of 2.6%~9.7%.The proposed method can meet the requirement of the determination of PAEs in actual water samples.

关 键 词：固相微萃取 纳米碳点 邻苯二甲酸酯 溶胶-凝胶 

分 类 号：TE685.31[石油与天然气工程—油气加工工程] O657[理学—分析化学]