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Temporal determination of heavy metals in PM_(2.5) from Guiyang, Guizhou province, southwestern China

机译:中国西南部贵州贵阳PM_(2.5)中重金属的时间测定

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Twelve hours integrated PM_(2.5) samples collected with a Weekly Air Particulate Sampler (URG Model 2000-01J) from September 2008 to November 2008 in Guiyang, China, were analyzed on the Kevex energy dispersive x-ray spectrometer (XRF) for elements. Monitoring results found elevated concentrations of heavy metals (Ti, Mn, Fe, Zn, and Pb) in PM_(2.5) in Guiyang. The average concentrations were 30±22 ng m~(-3) for Ti, 250±400 ng m~(-3) for Mn, 340±280 ng m~(-3) for Fe, 290±330 ng m~(-3) for Zn, and 130±130 ng m~(-3) for Pb, respectively. Temporal variation patterns in the resulting data were also obtained. It is hypothesized that local anthropogenic sources and the seasonal variability result in the temporal variability.
机译:在2008年9月到2008年9月,在中国古阳的每周空气微粒采样器(URG Model 2000-01J)收集的12个小时集成PM_(2.5)样本进行了分析在贵阳的贵阳,用于元素的Kevex能量分散X射线光谱仪(XRF)。监测结果发现贵阳PM_(2.5)中的重金属(TI,Mn,Fe,Zn和Pb)的升高浓度。用于Ti的平均浓度为30±22ng m〜(-3),250±400ng m〜(-3)用于Fe,340±280ng m〜(3),290±330 ng m〜( -3)对于Zn,Pb的Zn和130±130ng m〜(-3)。还获得了所得数据中的时间变化模式。假设局部人为源和季节性可变性导致时间变异性。

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