【摘要】 本文研究了法杨司法测定Ｃｌ－含量时，以聚乙烯醇（ＰＶＡ）作胶体保护剂，代替糊精（或淀粉），使终点变色更加敏锐，提高了该方法的灵敏度及最低检测限，达到了莫尔法的准确度，取得了良好的实用效果。更多还原

【Abstract】 The measure of Cholride ion was made by the Fajans method using PVA as emulsifying protectivie agent instead of dextrin(or starch)in this paper.The colour-changing at the terminal became more sensitive in the method.improve the least determinable limited amont,reached the accuracy of the Moorse’s method and got some practical results更多还原