A proton transfer reaction mass spectrometry based system for determining plant uptake of volatile organic compounds
A proton transfer reaction mass spectrometry based system for determining plant uptake of volatile organic compounds
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DOI：
10.1016/j.atmosenv.2006.10.039
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发表时间：
2007-03
影响因子：
5
通讯作者：
A. Tani;Shungo Kato;Y. Kajii;Michael J. Wilkinson;S. Owen;N. Hewitt
中科院分区：
文献类型：
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作者：
A. Tani;Shungo Kato;Y. Kajii;Michael J. Wilkinson;S. Owen;N. Hewitt
为了评价高等植物对大气中挥发性有机物的去除贡献，建立了由质子转移反应质谱仪（PTR-MS）、CO2分析仪、扩散装置和叶片围隔组成的测量系统。研究了金腐霉（Epipremnum aureum）对挥发性有机物的吸收特性。当黄金Pothos叶暴露于75- 750 ppbv的甲基异丁基酮（MIBK）时，使用该系统进行测量的总体相对误差<2.2%。即使在最低的MIBK浓度下，超过2.2%的流入的VOC损失到叶中，代表植物的可检测的和正的MIBK吸收率。研究结果与基于气相色谱分析的测量系统进行了比较，结果表明，使用基于PTR-MS的系统可以显着提高确定植物VOC吸收速率的确定性。
In order to evaluate the contribution that higher plants make to the removal of volatile organic compounds from the atmosphere, a measurement system consisting of a proton transfer reaction mass spectrometer (PTR-MS), CO2analyzer, diffusion devise and leaf enclosure was established. The uptake of VOCs by Golden Pothos (Epipremnum aureum) was investigated. The overall relative error associated with measurements made using this system was <2.2% when a Golden Pothos leaf was exposed to 75–750ppbv of methyl isobutyl ketone (MIBK). Even at the lowest MIBK concentration, more than 2.2% of the inflowing VOC was lost to the leaf, representing a detectable and positive MIBK uptake rate by the plant. The results of the investigation were compared with a measurement system based on gas chromatography analysis and it was shown that the use of a PTR-MS based system can significantly increase the certainties in determining the rate of VOC uptake by plants.