摘要：空气中悬浮颗粒物所携带的重金属对生态环境和人民身体健康带来巨大的危害；对某地城区按区域功能进行多次取样，将样品进行酸溶法处理，使样品中所含的各种重金属成分充分溶解；确定仪器最优工作条件，方法检出线0.7-120µg/L,回收率92.2%-105.7%，元素测量误差在标准物允许范围内。使用原子吸收光谱法分析溶液中Cr、Cu、Pb等多种重金属元素的含量，得出该地城区不同功能区域空气中重金属污染情况。通过对比探究得出污染可能得原因并提出一些简单可行的防治方法。实践探究过程简单明了，实验结果可信，对城市大气颗粒物中重金属污染的治理具有一定的借鉴价值。
Abstract:Heavy metals carried by suspended particulates in the air pose significant hazards to the ecological environment and public health. Multiple samples were collected in the urban area of a certain location based on functional zones. These samples were treated using an acid dissolution method to fully dissolve various heavy metal components contained within them. The optimal operating conditions of the instrument were determined: the method detection limit ranged from 0.7 to 120 µg/L, the recovery rate was between 92.2% and 105.7%, and the element measurement error fell within the allowable range of standard substances. Atomic absorption spectrometry was employed to analyze the contents of various heavy metal elements (such as Cr, Cu, and Pb) in the solution, thereby obtaining the status of heavy metal pollution in the air across different functional zones of the urban area. Through comparative investigation, the possible causes of pollution were identified, and some simple and feasible prevention and control methods were proposed. The practical research process is simple and clear, the experimental results are reliable, and this study holds certain reference value for the control of heavy metal pollution in urban atmospheric particulates.
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