Detection and quantification of trace airborne transfluthrin concentrations via air sampling and thermal desorption gas chromatography-mass spectrometry.
Detection and quantification of trace airborne transfluthrin concentrations via air sampling and thermal desorption gas chromatography-mass spectrometry.
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通过空气采样和热解吸气相色谱-质谱法检测和定量空气中痕量四氟苯菊酯浓度。
DOI：
10.1016/j.chroma.2018.08.066
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发表时间：
2018
期刊：
影响因子：
--
通讯作者：
Willenberg,BradleyJ
中科院分区：
文献类型：
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作者：
Kwan,MichaelWC;Weisenseel,JasonP;Giel,Nicholas;Bosak,Alexander;Batich,ChristopherD;Willenberg,BradleyJ
研究了热解吸-气相色谱-电子电离-质谱（TD-GC-EI-MS）快速检测空气中氟氯菊酯的方法。在23°C下，通过装载Tenax®的管在1小时内进行9 L的主动空气采样，可有效捕获空气中的氟氯菊酯。随后的热解吸使LOD达到2.6 ppqv（每千万亿分之一体积）。为了从Tenax®吸附剂中获得最佳的样品回收率，最低一次解吸温度为300°C是必要的。室内空气的基质效应导致样品回收率的误差分别为10.9%和10.5%（分别为10 pg和100 pg装载管）。线性范围为74 ~ 74,000 ppqv，相关系数为0.9981。一种新型被动释放装置的主动空气采样显示，在1m范围内空气浓度梯度为~ 150pg /L，提供了该装置性能的空间表征。这种有效的方法允许远程收集样品和快速分析工业应用中的空气中跨氟菊酯，商业产品的优化研究以及家庭/家庭监测。
A rapid thermal desorption-gas chromatography-electron ionization-mass spectrometry (TD-GC-EI-MS) method for airborne transfluthrin detection is studied. Active air sampling of 9 L over 1 h at 23 °C through a Tenax®-loaded tube resulted in efficient capture of airborne transfluthrin. Subsequent thermal desorption was employed to achieve an LOD of 2.6 ppqv(parts per quadrillion by volume). A minimum primary desorption temperature of 300 °C is necessary for optimal recovery of sample from the Tenax® adsorbent. The matrix effects of indoor air lead to an error of 10.9% and 10.5% recovery of sample (10 pg and 100 pg loaded tubes, respectively). The linear range was 74–74,000 ppqvwith a correlation coefficient of 0.9981. Active air sampling of a novel passive release device revealed a ∼150 pg/L airborne concentration gradient over 1 m, providing spatial characterization of the device’s performance. This efficient method allows for the remote collection of samples and rapid analysis of airborne transfluthrin from industrial applications, optimization studies of commercial products as well as domestic/household monitoring.