Li Zhi-wen, Ren Ai-guo, Guan Lian-xin, Li Zhu
Institute of Reproductive Health of Peking University, Beijing 100083, China.
Wei Sheng Yan Jiu. 2006 Mar;35(2):217-8.
To understand the nitrate and nitrite contents of drinking water in Shanxi Province, China.
Water samples were collected from Pingding and Taigu counties and Taiyuan City. The nitrate and nitrite contents were determined following the 'Drinking water hygienic standard-2001'.
The median nitrate content of drinking water was 3.5 mg/L, and the proportion of samples above national hygienic standard for drinking water was 4.0% in study areas. The median nitrite content of well water samples(5.l mg/L) was higher than that of tape water (2.7 mg/L). The median content of nitrite was 0.004 mg/L for all samples, and the median content of spring water was highest (0.017 mg/L) than that of other sources. Conclusion The contents of nitrate and nitrite in drinking water were similar to that reported form other regions. Maternal nitrate exposure from drinking water may not be among the important risk factors of high prevalence of birth defects in Shanxi Province.
了解中国山西省饮用水中硝酸盐和亚硝酸盐的含量。
从平定县、太谷县和太原市采集水样。按照《生活饮用水卫生标准-2001》测定硝酸盐和亚硝酸盐含量。
研究区域饮用水中硝酸盐含量中位数为3.5mg/L，超过国家饮用水卫生标准的样本比例为4.0%。井水样本中亚硝酸盐含量中位数（5.1mg/L）高于自来水（2.7mg/L）。所有样本中亚硝酸盐含量中位数为0.004mg/L，其中泉水含量中位数最高（0.017mg/L），高于其他水源。结论：饮用水中硝酸盐和亚硝酸盐含量与其他地区报道的相似。孕期通过饮用水接触硝酸盐可能不是山西省出生缺陷高发的重要危险因素。
