摘要
建立了高场不对称波形离子迁移谱(FAIMS)检测水中苯含量的分析方法。研究了不同分离电压(Dispersion voltage,DV)下的苯标准谱图,获得用于苯识别的非线性函数二阶α2及四阶α4系数值分别为-3.8×10-5Td-2和5.1×10-8Td-4;通过平衡灵敏度与分离度,得到用于苯识别的最佳分离电压为800 V;通过不同质量浓度(0.08~0.64 mg/L)的苯样品与苯离子信号强度的关系,确定高场不对称波形离子迁移谱(FAIMS)对水中苯的检出限为0.89μg/L,远优于国家饮用水中苯浓度的限值10μg/L。本研究为水中苯检测提供了一种快速、高灵敏的方法。
A high field asymmetrical waveform ion migration spectrometric（ FAIMS） method was developed for the determination of benzene in water. The benzene standard spectra in different dispersion voltages（ DV） were studied,and the second-order α2 and the fourth-order α4 coefficients of nonlinear function for benzene identification were calculated to be-3. 8 × 10-5 Td-2 and 5. 1 × 10-8 Td-4,respectively. The optimum dispersion voltage for benzene identification was obtained to be 800 V by balancing the sensitivity and resolution. The detection limit of FAIMS for benzene in water,through the relationship between benzene signal intensity and different benzene concentrations（ 0. 08-0. 64 mg/L）,was determined to be 0. 89 μg/L,which was far superior to the national concentration limit（ 10 μg/L） for benzene in drinking water. This study provides a rapid and sensitive method for the detection of benzene in water.
作者
石海峡
徐青
余健文
胡俊
陈池来
SHI Hai- xia;XUQing;YU Jian- wen;HUJun;CHENChi- lai(School of Automotive and Transportation Engineering,Hefei University of Technology,Hefei 230009,China;Key Laboratory of Sensing Technology,Institute of Intelligent Machines,Chinese Academy of Sciences,Hefei 230031,China;Department of Automation,University of Science and Technology of China,Hefei 230027,China)
出处
《分析测试学报》
CAS
CSCD
北大核心
2018年第6期744-748,共5页
Journal of Instrumental Analysis
基金
国家重点研发计划(2016YFC0201101
2016YFC0201102)
合肥物质科学技术中心创新项目培育基金(2016FXCX008)
中国科学院青年创新促进会资助项目(2013213)
关键词
高场不对称波形离子迁移谱(FAIMS)
现场检测
苯
水样
high field asymmetrical waveform ion migration spectrometry（ FAIMS）
field detection
benzene
water
