摘要
为更好地开展环境空气中挥发性有机物(VOCs)的监测,本研究采用苏玛罐采样-空气预浓缩仪连接气质联用仪,通过中心切割技术利用双柱双检测器实现一针进样,分析环境空气中的57种VOCs。57种VOCs校准曲线的线性相关系数在0.996 2~0.999 9,实验室检出限在0.01~0.03 nmol/mol,2 nmol/mol VOCs标气试验测定的相对标准偏差在0.5%~8.2%,方法性能满足相关技术规范要求。
In order to better monitor volatile organic compounds(VOCs)in the ambient air,this study uses a Suma tank sampling-air preconcentration instrument connected to a gas chromatography-mass spectrometry instrument,and uses center cutting technology to achieve one needle injection using dual columns and dual detectors to analyze 57 VOCs in ambient air.The linear correlation coefficient of the calibration curves for 57 VOCs is 0.9962~0.9999,and the laboratory detection limit is 0.01~0.03 nmol/mol,the relative standard deviation measured by the 2 nmol/mol VOCs standard gas test is 0.5%~8.2%,and the method performance meets the requirements of relevant technical specifications.
作者
吴际
WU Ji(Bengbu Ecological and Environmental Monitoring Center of Anhui Province,Bengbu 233040,China)
出处
《中国资源综合利用》
2023年第6期65-68,共4页
China Resources Comprehensive Utilization
关键词
中心切割技术
环境空气
挥发性有机物
center cutting technology
ambient air
volatile organic compounds
