Performance of an Aerodyne Aerosol Mass Spectrometer (AMS) during Intensive Campaigns in China in the Summer of 2006
Performance of an Aerodyne Aerosol Mass Spectrometer (AMS) during Intensive Campaigns in China in the Summer of 2006
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DOI：
10.1080/02786820802582251
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发表时间：
2009-02
影响因子：
5.2
通讯作者：
N. Takegawa;T. Miyakawa;M. Watanabe;Y. Kondo;Y. Miyazaki;S. Han;Yongjing Zhao;D. Pinxteren;E. Brüggemann;T. Gnauk;H. Herrmann;R. Xiao;Z. Deng;Min Hu;T. Zhu;Y. Zhang
中科院分区：
文献类型：
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作者：
N. Takegawa;T. Miyakawa;M. Watanabe;Y. Kondo;Y. Miyazaki;S. Han;Yongjing Zhao;D. Pinxteren;E. Brüggemann;T. Gnauk;H. Herrmann;R. Xiao;Z. Deng;Min Hu;T. Zhu;Y. Zhang
2006年夏天，在中国部署了一台Aerodyne四极杆气溶胶质谱仪（AMS）。2006年7月在珠江三角洲地区进行了测量（珠三角运动），2006年8月至9月在北京进行了测量（北京关怀运动）。AMS成功地测量了亚微米非耐火气溶胶（在600°C真空中蒸发）的尺寸分辨化学成分，时间分辨率为10分钟，尽管已经确定了一些量化问题。我们在m/z 39（39 K +）和41（41 K+）处观察到非常大的信号，其显著超过m/z 28（N + 2）信号。我们还发现了m/z 85（85 Rb +），87（87 Rb+）和133（Cs +）的大信号。实验室实验表明，K +的大幅增强可能是由于环境空气中存在含K颗粒。碱金属在m/z 41、85、87和133处的干扰显著，需要校正以更好地定量有机气溶胶。AMS测量进行了比较与其他，并置测量：粒子到液体采样器结合离子色谱仪（PILS-IC），日落实验室半连续含碳气溶胶分析仪，和伯纳撞击采样器，然后离线离子色谱分析（主要无机离子）。我们发现AMS和其他仪器之间有很好的协议时，我们假设AMS粒子收集效率（CE）为0.5的PRD数据和CE = 1.0的CAREBEIJING数据。这些结果表明，AMS CE在不同的位置可能有显着差异。影响CE值的变异性的可能因素进行了讨论。
An Aerodyne quadrupole aerosol mass spectrometer (AMS) was deployed in China in the summer of 2006. The measurements were made in the Pearl River Delta region in July 2006 (PRD campaign) and also in Beijing in August–September 2006 (CAREBEIJING campaign). The AMS successfully measured size-resolved chemical composition of submicron non-refractory aerosol (vaporized at 600°C in vacuum) with a time resolution of 10 min, although some quantification issues have been identified. We observed extremely large signals at m/z 39 ( 39 K + ) and 41 (41K + ), which significantly exceeded m/z 28 (N + 2 ) signals. We also found large signals of m/z 85 ( 85 Rb + ), 87 (87Rb + ), and 133 (Cs + ). Laboratory experiments suggest that the large enhancement of K + could have been due to the presence of K-containing particles in ambient air. The interferences of alkali metals at m/z 41, 85, 87, and 133 were significant and need to be corrected for better quantification of organic aerosol. The AMS measurements are compared with other, collocated measurements: a particle-into-liquid sampler combined with an ion chromatograph (PILS-IC), a Sunset Laboratory semi-continuous carbonaceous aerosol analyzer, and a Berner impactor sampler followed by off-line ion chromatography analysis (for major inorganic ions). We have found good agreement between the AMS and the other instruments when we assume an AMS particle collection efficiency (CE) of 0.5 for the PRD data and CE = 1.0 for the CAREBEIJING data. These results suggest that the AMS CE could be significantly different in different locations. Possible factors affecting the variability in the CE values are discussed.