摘要
该文基于银川平原139组地下水样检测结果,运用水文地球化学方法,分析了银川平原地下水中氟的分布特征及成因,并结合USEPA评价模型进行了非致癌健康风险评价。结果表明:氟主要超标于潜水含水层中,其中灵武局部地区氟含量高达4.0 mg/L以上;垂向上,随着深度的增加,氟含量有逐渐降低的趋势,且在潜水中氟含量变化幅度较大;地下水的氟富集主要受蒸发浓缩和岩石风化作用控制,同时离子交换、酸碱环境和人类的生产活动也产生了一定的影响;地下水高氟区对成人和儿童的健康均会产生影响,且对儿童的危害作用远大于成人,儿童应作为主要预防人群。
Based on the test results of 139 groups of groundwater samples in Yinchuan Plain, the distribution characteristics and causes of fluorine in groundwater were analyzed by using the hydrological geochemistry method, and the non-carcinogenic health risk assessment was carried out by using USEPA evaluation model. The results show that the content of fluorine reached 4.0 mg/L in some parts of Lingwu, and decrease with the increase of depth in vertical direction. The enrichment of fluorine in groundwater is mainly controlled by evaporation concentration and rock weathering, and also by ion exchange, acid-base environment and human production activities. Diving will have a certain impact on the health of adults,but the harm of diving and confined water to children is far greater than that to adults. Therefore, children are the main prevention population of health risk in the study area.
作者
荆秀艳
李小珍
王文姬
张文媛
董强飞
JING Xiuyan;LI Xiaozhen;WANG Wenji;ZHANG Wenyuan;DONG Qiangfei(College of Geology and Environment,Xi'an University of Science and Technology,Xi'an 710054,China)
出处
《环境科学与技术》
CAS
CSCD
北大核心
2022年第2期174-181,共8页
Environmental Science & Technology
基金
国家自然科学基金(41472220)。
关键词
氟
承压水
分布特征
健康风险评价
fluorine
confined water
distribution characteristics
health risk assessment
