典型峡谷城市地表灰尘中水溶性离子组分空间分布特征与来源解析  

Spatial distribution and source analysis of water-soluble ions in urban surface dust from a typical canyon city

作　　者：宋卫华 张永江 黄晓容 邓茂 田川 SONG Weihua;ZHANG Yongjiang;HUANG Xiaorong;DENG Mao;TIAN Chuan(Environmental Monitoring Center Station of Qianjiang District in Chongqing,Chongqing 401200,China;Chongqing Vocational Institute of Tourism,Chongqing 409000,China)

机构地区：[1]重庆化工职业学院,重庆401200 [2]重庆市黔江区生态环境监测站,重庆409000

出　　处：《贵州师范大学学报（自然科学版）》2022年第2期40-45,共6页Journal of Guizhou Normal University：Natural Sciences

基　　金：重庆市教委科学技术研究项目(KJQN202104501);黔江区科技项目(黔科计2021067)。

摘　　要：以典型峡谷城市黔江区城区地表灰尘作为研究对象,分析了地表灰尘中9种水溶性离子组分含量,研究其空间分布特征和污染来源解析。结果表明:研究区域的灰尘基本为微酸性和中性。9种水溶性离子总浓度范围为2.42×10^(3)~1.15×10^(5) mg/kg,平均值为2.79×10^(4) mg/kg。SO_(4)^(2-)、Ca^(2+)、Na^(+)、NO_(3)^(-)是灰尘中最主要的水溶性成分。研究区域灰尘均为低氯灰尘和中氯灰尘,灰尘中离子的污染源主要来自工业源、土壤源、交通源和农业源。Taking the surface dust in Qianjiang,a typical canyon city,as the research object,the contents of 9 kinds of water-soluble ions in the surface dust were analyzed,and their spatial distribution characteristics and pollution sources were studied.The results showed that the dust in the study area was basically slightly acidic and neutral.The total concentrations of 9 water-soluble ions ranged from 2.42×103~1.15×105 mg/kg,with an average of 2.79×104 mg/kg.SO_(4)^(2-),Ca^(2+),Na^(+)and NO_(3)^(-) are the main water-soluble components in dust.The dust in the study area is low chlorine dust and medium chlorine dust.The pollution sources of ions in dust mainly come from industrial sources,soil sources,traffic sources and agricultural sources.

关 键 词：黔江区 地表灰尘 水溶性离子组分 来源 

分 类 号：X53[环境科学与工程—环境工程]