摘要
采用热脱附-气相色谱-质谱法测定空气中24种挥发性有机物(VOCs)。样品经吸附并经过热脱附解析,再经DB-35MS色谱柱(30m×0.25mm×0.25μm)分离,利用质谱的选择离子监测(SIM)模式进行定性和定量。24种VOCs的浓度在5~100mg·L^(-1)范围内与其峰面积呈线性关系,检出限(3S/N)在0.003~0.113μg·m^(-3)之间。添加混标浓度为10mg·L^(-1)加标回收率在80.5~115.8%之间,测定值的相对标准偏差(n=6)在2.2~5.6%之间。
The sample was adsorbed and analyzed by a thermal desorption device, then separated on DB-35MS column （30 m × 0.25 mm ×0. 25 m）, qualitatively and quantitatively determined by selective ion monitoring （SIM） model of mass spectrometry. The concentration of 24 VOCs was linearly related to its peak area in the range of 5-100 mg · L-1 , and the detection limit （3S/N） was between 0. 003-0. 113g μ. m-3. The concentration of spiked mixture was 10 mg . L-1, and the recoveries were 80.5%-115.8% with the relative standard deviation （n = 6） of the measured value 2.2%-5.6%.
作者
赵海波
田福林
王志嘉
李红
任雪冬
Zhao Haibo Tian Fulin Wang Zhijia Li Hong Ren Xuedong(Liaoning Province Academy of Analytic Sciences, Standard System Engineering Research Center of Liaoning Province, Shenyang 110015, China)
出处
《分析仪器》
CAS
2017年第5期49-54,共6页
Analytical Instrumentation
基金
辽宁省自然科学基金(20170540479)
关键词
热脱附
气相色谱/质谱
挥发性有机物
thermal desorption
gas chromatography-mass spectrometry
volatile organic compounds
