[北京饮用水中16种金属元素的暴露水平]

[Exposure level of 16 metal elements in drinking water in Beijing].

作者信息

Tian Peiyao, Zhao Jinhui, Wei Jianrong, Chen Binsheng

机构信息

Beijing Center for Disease Prevention and Control, Beijing 100013, China.

出版信息

Wei Sheng Yan Jiu. 2012 Sep;41(5):805-8.

PMID:23213698

Abstract

OBJECTIVE

To investigate the exposure level of 16 metal elements (Pb, Cd, Cu, Zn, Fe, Mn, Ni, Ag, Sb, Se, Al, Ba, Be,T1, Mo and Na) in drinking water for residents in Beijing.

METHODS

To monitor 16 elements in drinking water collected by multi-stage cluster sampling method from 270 families in summer and winter and detected by inductively coupled plasma mass spectrometry. The data were analyzed by SPSS 17.0 COMPLEX SAMPLE.

RESULTS

The exposure levels from low to high can be divided into three layers. The exposure level for Ag, Cd, Sb, Be and T1 was from not detected to 0.083 microg/L, for Mo,Pb, Ni and Se was 0.06-100 microg/L, for Cu,Al,Zn,Mn,Fe,Na and Ba was 0. 00036-6. 579mg/L. The exposure level of 11 elements ( Pb, Se, Mo, Cu, Zn, Mn, Ni, Al, Ba, Fe, Na) in summer was higher than that in winter. The qualified rate for Na, Al, Mn, Zn, Fe, Ba, Pb and Se was 95.6%, 98.9%, 93.3%, 95.9%, 87.4%, 96.7%, 98.1% and 93.7% in winter respectively. The qualified rate for Mn, Ni, Zn, Fe, Pb and Se was 95.9%, 99.6%, 95.2%, 98.1%, 96.7%, 98.1% in summer respectively. The qualified rate for other elements was 100%.

CONCLUSION

The qualification of 16 metal elements in drinking water in Beijing were in low exposure levels. Most of indicators in municipal water supply were better than those in self-provided water supply.

摘要

目的

调查北京市居民饮用水中16种金属元素（铅、镉、铜、锌、铁、锰、镍、银、锑、硒、铝、钡、铍、铊、钼和钠）的暴露水平。

方法

采用多阶段整群抽样法从270户家庭采集夏、冬两季饮用水，用电感耦合等离子体质谱法检测其中16种元素。数据采用SPSS 17.0复杂样本进行分析。

结果

暴露水平由低到高可分为三层。银、镉、锑、铍和铊的暴露水平为未检出至0.083微克/升，钼、铅、镍和硒为0.06 - 100微克/升，铜、铝、锌、锰、铁、钠和钡为0.00036 - 6.579毫克/升。夏季11种元素（铅、硒、钼、铜、锌、锰、镍、铝、钡、铁、钠）的暴露水平高于冬季。冬季钠、铝、锰、锌、铁、钡、铅和硒的合格率分别为95.6%、98.9%、93.3%、95.9%、87.4%、96.7%、98.1%和93.7%。夏季锰、镍、锌、铁、铅和硒的合格率分别为95.9%、99.6%、95.2%、98.1%、96.7%、98.1%。其他元素的合格率为100%。