庆阳市农村饮用水中化学指标的测定

目的研究甘肃省庆阳市农村饮用水中化学物质(金属离子以及阴离子等),为掌握庆阳市农村生活饮用水水质状况,改善水质、保障人民群众饮水安全和身体健康提供参考。方法以庆阳市管辖的8个县的饮用水作为检测对象,分析其中的金属离子和阴离子,对分析结果进行总结评价。结果分析检测结果显示,庆阳市8个县的采样点中华池县饮用水中氯化物指标(618mg/L)不合格,高出标准(≤250mg/L)上限值1.47倍;环县氟化物指标(2.41mg/L)不合格,高出标准(≤1.0mg/L)上限值1.41倍;华池县、庆城县、正宁县、合水县、宁县饮水中铬含量均超标,尤其是华池县饮用水中铬含量是国标的2.4倍,庆城县饮用水中铬含量是国标的1.44倍,其余各地饮用水化学指标均符合国标要求。结论甘肃省庆阳市各县区水源化学指标测定结果差异较大,部分县区的某些指标严重超标,生活饮用水水质的优劣与人类健康密切相关,生活饮用水水质安全应该引起高度重视。采取有效措施,确保饮水各项指标达标。

The determination of chemical index of rural drinking water in Qingyang City

Objective-To provide the reference for keeping abreast of the quality of rural drinking water in Qingyang City, Gansu, China, improving water quality and protecting the people＇s drinking water safety and health by studying into the chemical substances （metal ions and anions, etc. ） in rural drinking water in Qingyang City. Methods-With drinking water in eight counties under the jurisdic-tion of Qingyang as detection object, the metal ions and anions in drinking water are analyzed, and the analytical results are summarized. Results-Analytical results show that the chloride index （618 mg/L） in drinking water at the sampling points in Huachi County of the eight counties of Qingyang City is unqualified which is 1.47 times of the upper standard limit （less than or equal to 250 mg/L） the fluoride index （2. 41 mg/L） of Huan County is unqualified which is 1.41 times of the upper stand-ard limit （less than or equal to 1.0 mg/L）; The chromium content in Huachi County, Zhengning County, Heshui County and Ning County in drinking water exceeds standard, especially the chromium content in the drinking water in Huachi county is 2.4 times of national standard, the chromium con-tent in drinking water of Qingcheng County is 1.44 times of the national standard, the measurement results of chemical ions in drinking water in other counties meet the national standard. Conclusion-The determination results of chemical index in drinking water are different in all the counties under the jurisdiction of Qingyang City, Gansu Province. Some indexes in the drinking water in some counties exceeds greatly. The quality of drinking water is closely related to the human health, so the safety of drinking water should be drawn high attention to, and effective measures should be taken to ensure the chemical substances in drinking water meet the standard.