引用本文:王东方,聂剑文,欧阳鸿.大气VOCs在线监测系统测量准确性分析[J].环境监控与预警,2022,14(1):49-52
WANG Dong-fang, NIE Jian-wen,OUYANG Hong.Accuracy Analysis of VOCs in Air Online Monitoring[J].Environmental Monitoring and Forewarning,2022,14(1):49-52
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大气VOCs在线监测系统测量准确性分析
王东方,聂剑文,欧阳鸿1,2
1.上海建科环境技术有限公司,上海 201108;2.上海老港固废综合开发有限公司,上海 201302
摘要:
基于在线气相色谱-氢火焰离子检测/质谱(GC-FID/MS)方法,在线测量116种大气挥发性有机物的性能指标(线性关系、检出限、精密度、正确度、期间正确度和期间精密度)。基于在线监测系统连续7 d的实际运行情况,定量评估116种有机物在实际长期运行中测量的准确性和可靠性。结果表明,116种组分中,109种组分的线性相关系数(R)≥0.98,113种组分的检出限<0.15 nmol/mol,103种组分的正确度≤±15%,所有组分的精密度均≤15%。
关键词:  大气  挥发性有机物  气相色谱〖CD*2〗氢火焰离子检测/质谱  在线监测  准确性
DOI:
分类号:X832
基金项目:上海市科技攻关基金资助项目(20dz1204009);上海城投科技创新计划基金资助项目(CTKY-ZDXM-2019-019)
Accuracy Analysis of VOCs in Air Online Monitoring
WANG Dong-fang, NIE Jian-wen,OUYANG Hong1,2
1.Shanghai Jianke Enviromental Technology Co.Ltd.,Shanghai 201108,China;2.Shanghai Laogang Solid Waste Comprehensive Development Co.Ltd.,Shanghai 201302,China
Abstract:
Based on online GC FID/MS method, the performance indexes of 116 atmospheric VOCs were analyzed including linearity, detection limit, precision, accuracy, period accuracy and period precision. The accuracy of 116 volatile organic compounds measured by GC FID/MS was systematically analyzed. The measurement accuracy and reliability of 116 VOCs were quantitatively evaluated based on online operation for 7 consecutive days. The results showed that: among 116 species, the linear correlation coefficient (R) of 109 species was ≥0.98; the minimum detection limit of the 113 species was < 0.15 nmol/mol; the accuracy of the 103 species was within ±15%, and the precision of all species was within 15%.
Key words:  Air  VOCs  GC FID/MS  Online monitoring  Accuracy