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目的比较生活饮用水中溶解性总固体测量的称量法与仪器法,探讨更加方便准确的实验测量方法 ,以便提高日后理化检验工作中测量溶解性总固体的效率。方法用称量法与仪器法测定水中溶解性总固体,将两种方法进行比较,并进行统计学计算分析。结果称量法与仪器法的精密度、重复性相差不大,仪器法测量深井水的再现性更好。经t检验分析得出,称量法与仪器法两种方法结果差异无统计学意义(t=1.210.05)。结论用电导率仪测定生活饮用水中的溶解性总固体与生活饮用水标准检验方法 (GB/T5750.4-2006)和部标一致,显著提高了工作效率,操作方便,是值得推广的检验方法 。
Objective To compare the weighing method and instrumental method of measuring total dissolved solids in drinking water and discuss the more convenient and accurate experimental measurement methods in order to improve the efficiency of total dissolved solids measurement in the future physical and chemical testing. Methods Weighing method and instrumental method were used to determine the total dissolved solids in water. The two methods were compared and statistically analyzed. Results The accuracy and repeatability of the weighing method and the instrumental method are similar, and the instrumental method is better for measuring the reproducibility of deep well water. The results of t test showed that there was no significant difference between the two methods (t = 1.21 0.05). Conclusion The determination of the solubility of drinking water by conductivity meter The standard test method for total solids and drinking water (GB / T5750.4-2006) and the Ministry of standard, significantly improve the work efficiency, easy to operate, is worthy of promotion test method.