汉江安康段和汉中段水样重金属分析及人体健康评价  

Analysis of Heavy Metals in Water Samples from Ankang and Han-zhong Sections of Hanjiang River and Evaluation of Human Health

作　　者：李添明 陈双莉[1] Li Tianming;Chen Shuangli(School of Chemistry and Chemical Engineering,Xi'an University of Architecture and Technology,Xi'an 710055,China)

机构地区：[1]西安建筑科技大学化学与化工学院,陕西西安710055

出　　处：《广东化工》2021年第23期116-118,共3页Guangdong Chemical Industry

基　　金：陕西省大学生创新创业训练项目(S202010703140);校一流专业建设项目(YLZY1602S01)。

摘　　要：本文对汉江安康段和汉中段水样中的铜、铁、锌、铅、铬五种重金属的含量,采用石墨炉原子吸收分光光度计对其进行测定分析。应用美国环保局(USEPA)推荐的健康风险评价模型对水样中的重金属所引起的年健康风险做初步评价。结果表明:所测七个水样中铁,锌,镉,铜四种金属离子的浓度都在国标《GB/T14848-2017》Ⅲ类水质范围内,而七处水样都检测出铅超标问题,镉的致癌风险值超过了美国环保局推荐的评价标准,说明应该加强汉江上游段铅污染和镉污染的监测及治理,保证南水北调水源地的水质安全。The contents of copper, iron, zinc, lead and chromium in water samples from Ankang and Hanzhong sections of the Hanjiang River were determined and analyzed by graphite furnace atomic absorption spectrophotometer. The environmental protection agency’s recommended health risk assessment model was used to evaluate the annual health risk caused by heavy metals in water samples. The results show that the values of heavy metals(Fe, Zn, Cd, Cu except Pb)were blow the limit of national standard class Ⅲ for groundwater, the carcingenic risks of divalent cadmium in all areas are higher than those of the assessment standard recommended by U.S.EPA which implies that the government should give priority to the prevention and governance of lead and cadmium pollution to ensure the safety of people’s drinking water in the water source of the South-to-North Water Diversion.

关 键 词：汉江 水样 重金属 健康风险 评价 

分 类 号：X820.4[环境科学与工程—环境工程]