固体吸附-热脱附/气相色谱-质谱法测定环境空气和室内空气中松节油  

Determination of turpentine in environmental air and indoor air by solid adsorption-thermal desorption/gas chromatography-mass spectrometry

作　　者：李亮 付晓涛 孙冰 白永泉 马笑君 张兆成 李晓东 杜远江 王文博 Li Liang;Fu Xiaotao;Sun Bing;Bai Yongquan;Ma Xiaojun;Zhang Zhaocheng;Li Xiaodong;Du Yuanjiang;Wang Wenbo(Inner Mongolia Environmental Monitoring Center Station,Hohhot Inner Mongolia 010011,China;Hohhot Sub-station of Inner Mongolia Environmental Monitoring Center Station,Hohhot Inner Mongolia 010011,China;Wu Hai Sub-station of Inner Mongolia Environmental Monitoring Center Station,Wuhai Inner Mongolia 016000,China;Inner Mongolia Environmental Monitoring and Inspection Co.,Ltd,Hohhot Inner Mongolia 010011,China;Inner Mongolia Nengjian Environmental Monitoring Co.,Ltd,Hohhot Inner Mongolia 010011,China;Baotou Sub-station of Inner Mongolia Environmental Monitoring Center Station,Baotou Inner Mongolia 014030,China)

机构地区：[1]内蒙古自治区环境监测总站,内蒙古呼和浩特010011 [2]内蒙古自治区环境监测总站呼和浩特分站,内蒙古呼和浩特010011 [3]内蒙古自治区环境监测总站乌海分站,内蒙古乌海016000 [4]内蒙古环境监测检验有限公司,内蒙古呼和浩特010011 [5]内蒙古能建环境监测有限公司,内蒙古呼和浩特010011 [6]内蒙古自治区环境监测总站包头分站,内蒙古包头014030

出　　处：《环境与发展》2024年第3期44-48,86,共6页Environment & Development

摘　　要：目的:研究建立了固体吸附-热脱附/气相色谱-质谱法测定环境空气和室内空气中松节油的分析方法。方法:研究了吸附管脱附温度、解析时间、脱附流量、冷阱脱附温度、冷阱聚焦温度、冷阱脱附时间对分析结果的影响,并确定了最佳优化条件为吸附管脱附温度280℃,解析3min,脱附流量为30mL/min,冷阱脱附温度为300℃,冷阱聚焦温度为-10℃,冷阱脱附时间为3min。结果:该方法在5~100ng范围内线性关系良好,方法检出限为0.5μg/m^(3)。实验室间相对标准偏差均低于5%;环境空气加标回收率在86.8%~107%之间,实验室间加标回收率相对偏差为7.60%;室内空气样品加标回收率在74.5%~109%之间,实验室间加标回收率相对偏差为11.2%。结论:方法具有良好的再现性、较好的精密度和准确度,且简便快捷,无需使用有机溶剂,适合环境空气和室内空气中松节油的快速检测分析。Objective:An analytical method for the determination of turpentine in both ambient and indoor air by solid adsorption-thermal desorption/gas chromatography-mass spectrometry(GC-MS)was developed.Methods:In this work,the influence of desorption temperature,resolution time,desorption flow rate,focusing temperature and cold trap desorption time on the analytical results was investigated and the optimal optimization conditions were set as adsorbent tube desorption temperature of 280°C,resolution of 3 min,desorption flow rate of 30 mL/min,cold trap desorption temperature of 300°C,cold trap focusing temperature of-10°C and cold trap desorption time of 3 min.Results:The calibration curves demonstrated a linear relationship within the range of 5~100 ng,and the limits of detection(LOD)were 0.5μg/m3.The RSDs between laboratories were lower than 5%,and the recoveries of ambient air spiked samples varied from 86.8%to 107%,with an inter-laboratory spiked recoveries RSD of 7.60%.The spiked recoveries of air samples ranged from 74.5%to 109%,with an inter-laboratory relative deviation of spiked recoveries of 11.2%.Conclusion:The method is efficient and simple,as it does not require organic solvents,and is suitable for quickly measuring and analyzing turpentine in both indoor and outdoor air.It has high reproducibility,accuracy,and precision.

关 键 词：热脱附 气相色谱-质谱法 松节油 环境空气 室内空气 

分 类 号：X830.2[环境科学与工程—环境工程]