桂林市开放扬尘源源谱构建及化学组成特征研究

发布时间：2018-04-30 00:44

本文选题：扬尘 + 组分特征　；参考：《工业安全与环保》2017年10期

【摘要】：为了揭示桂林市大气中开放源组分特征,本研究在桂林采集了土壤扬尘、道路扬尘、建筑扬尘、堆场扬尘样品,分析了多种无机元素和水溶性离子含量,构建了桂林市开放源源谱。结果表明:桂林市土壤扬尘、道路扬尘、建筑扬尘、堆场扬尘中主量成分主要包含Ca、Fe、Al,主要为地壳元素和建筑标志元素。所有开放扬尘源元素中Ca,道路扬尘中Cu、Zn,堆场扬尘Pb、Zn富集程度极强,这些元素受人为污染影响,主要来自建筑施工、机动车、燃煤等。桂林市开放扬尘源之间分歧系数大于0.2,各开放扬尘源之间化学组成相似度不高;建筑扬尘与道路扬尘、土壤扬尘之间的分歧系数相对较小(分别为0.37、0.39),相互影响较大。桂林市各开放扬尘源与上海市扬尘源之间的分歧系数高(分别为0.46、0.50、0.51),化学组分差异大,可能与两个城市主要产业、人为污染源的差异相关。
[Abstract]:In order to reveal the characteristics of open source components in the atmosphere of Guilin, samples of soil dust, road dust, building dust and yard dust were collected in this study, and a variety of inorganic elements and water soluble ions were analyzed. The open source spectrum of Guilin is constructed. The results show that the main components of soil dust, road dust, building dust and yard dust in Guilin city mainly include the elements of crust and building mark. All the elements in the open dust source, such as Ca, Cu Zn in road dust and Pb Zn in yard dust, are highly enriched. These elements are mainly affected by man-made pollution, such as construction, motor vehicle, coal burning and so on. The divergence coefficient between the open dust sources in Guilin is greater than 0.2, and the chemical composition similarity between the open dust sources is not high, and the divergence coefficient between the building dust and the road dust and the soil dust is relatively small (0.37% 0.39%, respectively), which has a great influence on each other. The divergence coefficient between the open dust sources in Guilin city and that in Shanghai is high (0.46 ~ 0.50,0.51g, respectively), and the difference of chemical components is large, which may be related to the difference of the main industries and the anthropogenic sources of pollution in the two cities.
【作者单位】：桂林理工大学;桂林市环境监测中心站;上海交通大学环境科学与工程学院;
【基金】：国家自然科学基金(21577090)
【分类号】：X513

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