引用本文:徐乐.两种吹扫捕集浓缩仪在测定土壤VOCs时的性能比较[J].环境监控与预警,2015,7(2):20-25
XU Le.Performance Comparison between Purge and trap Concentrators of Stratum PTC and Eclipse 4660 for Determination of VOCs in Soil[J].Environmental Monitoring and Forewarning,2015,7(2):20-25
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两种吹扫捕集浓缩仪在测定土壤VOCs时的性能比较
徐乐
上海市松江区环境监测站,上海 201613
摘要:
从仪器精密度、方法检出限、准确度等角度对吹扫捕集浓缩仪Stratum PTC与Eclipse 4660的性能进行比较。结果表明,大部分分析物用Stratum PTC的方法检出限略高于Eclipse 4660,但精密度比Eclipse 4660稍差;Eclipse 4660用于分析极性的、水溶性物质的效果比Stratum PTC好,回收率更高。两种吹扫捕集仪的测试结果均满足《土壤和沉积物挥发性有机物的测定 吹扫捕集/气相色谱-质谱法》(HJ 605-2011)标准方法的指标要求。
关键词:  吹扫捕集  精密度  方法检出限  准确度
DOI:
分类号:O622;O657.63
基金项目:
Performance Comparison between Purge and trap Concentrators of Stratum PTC and Eclipse 4660 for Determination of VOCs in Soil
XU Le
ongjiang District Environmental Monitoring Station, Shanghai 201613, China
Abstract:
The performance of purge and trap concentrators was compared between Stratum PTC and Eclipse 4660 in the way of precision of instruments, method detection limits, accuracy and so on. The results showed that the method detection limits of most analytes tested by Stratum PTC were slightly higher than by Eclipse 4660, while the precision was a little worse. Eclipse 4660 was more appropriate to analyze polar or water soluble components, and the recovery was higher than that of Stratum PTC. The experimental results of both instruments met the requirements in standard method 《Soils and sediments Determination of Volatile Organic Compounds Purge and Trap/Gas chromatography-mass spectrometry》(HJ 605 2011) easily.
Key words:  Purge and trap  Precision  Method detection limit  Accuracy