承德市水质部分化学指标的测定及分析

Determination and Analysis of Some Chemical Indexes of Water Quality in Chengde City

以化学滴定法和仪器分析法对承德市自来水、地表水、河流水以及实验室蒸馏水分别取样分析,分析测定水样的酸碱度、电导率、水的总硬度、Ca(Ⅱ)、Mg(Ⅱ)、Pb(Ⅱ)、Fe(Ⅱ)、Mn(Ⅱ)、等含量以及化学需氧量(COD)等部分化学指标,由此说明承德自来水、地表水、河流水的水质情况。检验结果表明承德地区饮用水和非饮用水的部分化学指标基本都能达到国家相应的标准。承德多山多矿,故所有水体总硬度和钙离子含量都偏高。生活饮用水全部符合国家饮用水标准,河流水质除了铅含量高一些以外其他指标也相当不错,可以用于正常的农业工业等其他方面。

The samples of tap-water,surface water and river water in Chengde were analyzed by chemical titration and instrumental analysis.The electrical conductivity,total hardness,the content of Ca(Ⅱ),Mg(Ⅱ),Pb(Ⅱ),Fe(Ⅱ),Mn(Ⅱ),Sulfate radical,Carbonate and chemical oxygen demand of the samples were analyzed.There are many mountains and minerals in Chengde,so the total hardness and Ca(Ⅱ)content of all water are on the high side.Besides the high content of Pb(Ⅱ),other indicators of river water quality are quite good,which can be used in other aspects such as normal agriculture and industry.As far as Chengde is concerned,for the above chemical indicators,there is no need to install water purifier can drink the safe water.