| 安徽旌德-宁国地区大气干湿沉降地球化学特征及评价研究 |
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| 引用本文： | 吴正,邢润华,陈富荣,李明辉,刘超,李杨.安徽旌德-宁国地区大气干湿沉降地球化学特征及评价研究[J].地质与资源,2021,30(6):733. |
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| 作者姓名： | 吴正 邢润华 陈富荣 李明辉 刘超 李杨 |
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| 作者单位： | 安徽省地质调查院(安徽省地质科学研究所), 安徽 合肥 230001 |
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| 基金项目： | 中国地质调查局地质调查专项"皖南岳西-宁国（旌德-宁国片）1：25万土地质量地球化学调查"（12120115049601）. |
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| 摘 要： | 以安徽旌德-宁国地区大气干湿沉降物为研究对象，共采集6处干湿沉降物样品24件，对大气干湿沉降元素含量特征、通量特征进行对比分析，对干湿沉降元素含量及分布特征加以统计研究，并开展大气干湿沉降环境地球化学评价.结果显示：1）大气干湿沉降元素主要以矿物相形式存在或吸附在固体颗粒上，且受周边环境影响；2）干沉降中Cd、Se的高含量会对研究区土壤污染造成较大影响，湿沉降中部分样点pH超灌溉水水质标准，所有点均达到地表水Ⅱ类环境质量标准；3）区内重金属元素年沉降通量密度为，As年沉降通量低，Hg、Ni、Pb、Cr、Cu、Cd偏低，Zn偏高；4）大气干湿沉降重金属元素通量一般表现为丘陵山区小于城镇及工矿区，主要受燃煤燃烧、尾气排放及人为活动等影响；5）大气干湿沉降物环境地球化学单指标和综合指标评价结果均为一等.
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| 关 键 词： | 大气干湿沉降 元素含量 沉降通量 重金属 土壤地球化学 安徽省 |
| 收稿时间： | 2021-03-09 |
GEOCHEMISTRY AND EVALUATION OF ATMOSPHERIC DRY AND WET DEPOSITION IN JINGDE-NINGGUO AREA,ANHUI PROVINCE |
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| WU Zheng,XING Run-hua,CHEN Fu-rong,LI Ming-hui,LIU Chao,LI Yang.GEOCHEMISTRY AND EVALUATION OF ATMOSPHERIC DRY AND WET DEPOSITION IN JINGDE-NINGGUO AREA,ANHUI PROVINCE[J].Geology and Resources,2021,30(6):733. |
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| Authors: | WU Zheng XING Run-hua CHEN Fu-rong LI Ming-hui LIU Chao LI Yang |
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| Institution: | Geological Survey of Anhui Province(Anhui Institute of Geological Sciences), Hefei 230001, China |
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| Abstract: | Taking the atmospheric dry and wet deposition in Jingde-Ningguo area of Anhui Province as study object, a total of 24 samples are collected from 6 sites to comparatively analyzes the element content and flux characteristics of atmospheric dry and wet deposition, statistically study the element content and distribution features of dry and wet deposition, and carry out the environmental geochemical evaluation as well. The results show that atmospheric dry and wet deposition elements mainly exist in the form of mineral facies or adsorbed on solid particles, and they are affected by surrounding environment. The high Cd and Se contents in dry deposition have great impact on soil pollution in the study area, the pH values of some wet deposition sampling sites exceed the irrigation water quality criteria, and all sites reach the Grade II surface water environmental quality standard. As to the annual deposition flux density of heavy metal elements, the deposition flux of As is low, Hg, Ni, Pb, Cr, Cu and Cd lower, and Zn higher. The flux of heavy metal elements in dry and wet atmospheric deposition is generally smaller in hilly areas than in towns and industrial/mining areas, mainly affected by coal combustion, exhaust gas emission and human activities. The evaluation results of environmental geochemistry single index and comprehensive index for atmospheric dry and wet deposition are both Grade I. |
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| Keywords: | atmospheric dry and wet deposition element content deposition flux heavy metal pedogeochemistry Anhui Province |
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