中文关键词PM_2.5富集因子(EF)主成分分析(PCA)生态风险健康风险评价 英文关键词PM_2.5enrichment factor(EF)principal component analysis(PCA)ecological risk analysishealth risk assessment

作者	单位	E-mail
何瑞东	郑州大学化学与分子工程学院, 环境科学研究院, 郑州 450001	heruidong@gs.zzu.edu.cn
张轶舜	郑州大学化学与分子工程学院, 环境科学研究院, 郑州 450001
陈永阳	郑州大学化学与分子工程学院, 环境科学研究院, 郑州 450001
靳孟洁	郑州大学化学与分子工程学院, 环境科学研究院, 郑州 450001
韩士杰	郑州大学化学与分子工程学院, 环境科学研究院, 郑州 450001
赵金帅	郑州大学化学与分子工程学院, 环境科学研究院, 郑州 450001
张瑞芹	郑州大学化学与分子工程学院, 环境科学研究院, 郑州 450001
燕启社	郑州大学化学与分子工程学院, 环境科学研究院, 郑州 450001	Qisheyanzzu@163.com

中文摘要 为了研究郑州市某生活区大气重金属元素的污染特征，对郑州市某生活区进行潜在生态风险和居民健康风险的评估，利用武汉天虹TH-16A型大气颗粒物智能采样仪对郑州市某生活区大气PM_2.5样品进行采集，并用波长色散X射线荧光光谱法（ambient air determination of inorganic elements in ambient particle matter wavelength dispersive X-ray fluorescence spectrometry，WD-XRF）分析17种金属元素的质量浓度；用富集因子法、主成分分析法对重金属的来源进行解析；用生态风险指数法和美国环保署的健康风险评价法分别对Cr、Cd、Cu、Zn、Ni、Pb和As等元素的潜在生态风险、居民健康风险进行评估.结果表明，富集因子（enrichment factor，EF）值较高的金属为Cd、Sb、Pb和As，其中Cd的富集因子值最高，为8657.6；郑州市某生活区金属元素的来源主要为地壳源/燃煤源、燃油源、垃圾燃烧源、冶金尘源和机动车排放源； Cd、Pb、Zn、As、Cu、Ni和Cr的单因子潜在生态危害指数值分别为70420.2、255.3、204.6、71.5、36.9、24.0和5.1；郑州市某生活区的Cd、As和Cr具有致癌风险，Cd的危害最大； Mn具有非致癌风险. 英文摘要 To study the pollution characteristics of atmospheric heavy metal elements in a living area of Zhengzhou City, assess the potential ecological risks, and determine risks to resident health in this city, the Wuhan Tianhong TH-16A Airborne Particles Intelligent Sampler was used to collect atmospheric PM_2.5 in Zhengzhou City. The mass concentrations of 17 metal elements were analyzed by ambient air determination of inorganic elements by ambient particle matter wavelength dispersive X-ray fluorescence spectrometry. The source of heavy metals was analyzed by the enrichment factor method and principal component analysis. The ecological risk index method and the US Environmental Protection Agency's health risk assessment method were used to evaluate the potential ecological risks and residents' health risks from Cr, Cd, Cu, Zn, Ni, Pb, As, and other elements. The results showed that metals with higher enrichment factor values were Cd, Sb, Pb, and As, and Cd had the highest enrichment factor value. The sources of metal elements in a living area of Zhengzhou City were mainly crust/burning coal, fuel, garbage burning, metallurgical dust, and vehicle emission. The single factor potential ecological hazard index values of Cd, Pb, Zn, As, Cu, Ni, and Cr were 70420.2, 255.3, 204.6, 71.5, 36.9, 24.0, and 5.1, respectively. Cd, As, and Cr in a living area of Zhengzhou City posed a cancer risk, and Cd was the most harmful. Mn had a non-carcinogenic risk.

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