大理学院生活饮用水水质理化检验四季变化情况分析

An Analysis of Seasonal Physical and Chemical Changes of the Tested Drinking Water in Dali University

目的:了解大理学院生活饮用水水质理化检验四季变化的情况,为广大师生健康安全的使用饮用水提供参考。方法:玻璃电极法、碘量法、乙二胺四乙酸二钠滴定法、硝酸银滴定法、氟离子选择电极法等。结果:对不同水样的五项指标四季值做t检验结果为:水源水pH值的P=0.034,溶解氧的P=0.022,总硬度的P=0.644,氯化物的P=0.516,氟化物P=0.038;自来水厂水pH值的P=0.011,溶解氧的P=0.010,总硬度的P=0.023,氯化物的P=0.810,氟化物P=0.001。结论:水源水的水质理化检验四季变化较自来水厂水小。

Objective： To research the seasonal physical and chemical changes of the drinking water in Dali University so as to provide teachers and students with references about drinking water for their health and safety. Methods： Glass electrode, iodometric method, disodium EDTA titration, silver nitrate titration, fluoride ion selective electrode. Results： The t-test results of the five indicators of water quality are as follows： raw Water ：pH value P=0.034, dissolved oxygen P=0.022, total hardness P=0.644,chloride P=0.516,fluoride content P=0.038; tap water： pH value P=0.01 1, dissolved oxygen P=0.010, total hardness P=0.023, chloride P=0.810, fluoride content P=0.001. Conclusion： The seasonal physical and chemical changes of raw water quality is less obvious than tap water.