摘要
目的了解我国西藏、青海、广西、云南、黑龙江、北京、内蒙古共7个省、市、自治区的自备井水中4种阴离子F^(-)、Cl^(-)、NO_(3)--N和SO_(4)^(2-)的污染状况。按照美国环境保护局(US EPA)的健康风险评估模型评价健康风险。方法对我国7个省、市、自治区的自备井237份水样,按照《生活饮用水标准检验方法水样的采集和保存》(GB/T 5750.2—2006)进行采样,检测F^(-)、Cl^(-)、NO_(3)^(-)-N和SO_(4)4项水质指标并进行评价。使用US EPA的健康风险评估模型对F-和NO3--N进行非致癌风险评估。结果7个省、市、自治区的自备井水阴离子总不合格率为19.78%。各地区水质污染情况差异大。黑龙江和北京自备井F-和NO3--N超标;西藏和青海SO_(4)^(2-)和Cl^(-)超标;云南和广西NO3--N超标;内蒙古则4种阴离子均超标。7个省、市、自治区的自备井水F-和NO3--N的非致癌健康风险(HI)平均值较小,未超出最高可接受风险(HI<1),F-和NO_(3)^(-)-N均无显著的非致癌风险。结论与南方省份相比,北方自备井水阴离子污染严重,尤其以内蒙古的阴离子污染较为突出,应根据不同阴离子污染水平加强水质监测与净化,保障饮水安全。
Objective To determine the anion pollution level of self-supplied well water in seven provinces or cities of China(Tibet,Qinghai,Guangxi,Yunnan,Heilongjiang,Beijing,Inner Mongolia). The health risk assessment results were evaluated according to the US Environmental Protection Agency(US EPA)health risk assessment model. Methods Water was collected from 237 samples of self-supplied well water in seven provinces or cities of China according to Standard examination methods for drinking water-Collection and preservation of water samples(GB/T 5750.2—2006). The samples were tested for 4 water parameters including F^(-),Cl^(-),NO_(3)^(-)-N and SO_(4)^(2-). F-and NO_(3)^(-)-N were assessed for noncarcinogenic risks using the US EPA health risk assessment model. Results The total unqualified rate of water quality in self-supplied well water was 19.78%. There was significant difference in anion levels between the samples of well water from the 7 regions. F^(-)and NO_(3)^(-)-N were indicators of unqualified water from self-supplied wells in Heilongjiang and Beijing,compared with SO_(4)^(2-)and Cl^(-)in Tibet and Qinghai. NO3--N was the unqualified indicator of samples from Guangxi and Yunnan,and all the 4 types of anions were unqualified indicators of samples from Inner Mongolia. There was no significant non-carcinogenic risk in the average HI(HI<1) of F^(-)and NO_(3)^(-)-N in the self-supplied well water. Conclusion Compared with samples from the southern provinces,the anion pollution of water of self-supplied wells in the Northern provinces is more serious,especially in Inner Mongolia. To ensure the safety of drinking water,monitoring and purification of the self-supplied well water should be strengthened according to different levels of anion pollution.
作者
王天一
白淼
戚红卷
孟洋
张灿
张传福
WANG Tian-yi;BAI Miao;QI Hong-juan;MENG Yang;ZHANG Can;ZHANG Chuan-fu(Center for Disease Control and Prevention of Chinese PLA,Beijing 100071,China;Department of Environmental Science and Engineering,Beijing Technology and Business University,Beijing 100048,China)
出处
《军事医学》
CAS
CSCD
2023年第2期135-140,共6页
Military Medical Sciences
基金
国家自然科学基金(52070193)
北京市自然科学基金(8192053)
军队保健专项(20BJZ17)。
关键词
自备井
水质检测
阴离子
健康风险评估
非致癌风险
self-supplied well
water quality testing
anion
health risk assessment
non-carcinogenic risk
