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为了掌握我县生活饮用水 pH 值变化情况,我们对1986～1995年全县18个乡镇按《生活饮用水标准检验方法》(GB5750-85)检验的1556份生活饮用水资料进行分析。生活饮用水 pH 值国家卫生标准为6.5≤pH≤8.5,我们对 pH<6.5和 pH>8.5的超标样品进行统计分析,以 pH 超标份数除以当年总检份数为总超标率,结果见附表。
In order to grasp the changes of pH value of drinking water in our county, we analyzed the data of 1556 drinking water samples tested by 18 villages and towns in China from 1986 to 1995 according to “Standard Test Method for Domestic Drinking Water” (GB5750-85). The national health standard of domestic drinking water is 6.5≤pH≤8.5, and we carry out statistical analysis on the exceeding standard samples of pH <6.5 and pH> 8.5, divide the pH excess standard number by the total inspection number of the current year to be the total excessive standard rate, and as a result see Schedule.