商品漂白精有效氯和总钙量的测定

The Determination of Effective Chlorine and Total Calcium in Goods Bleach

用碘量法和EDTA法,分别测定了漂白精中有效氯和总钙量。实验结果表明,要准确测定其含量,酸的选择十分重要,选用HCl或HOAc均可得到准确结果,而选用H2SO4则结果偏低,同时药品加入顺序和滴定速度的快慢,均对测定有一定的影响。

By way of iodinetry and EDTA, the effective chlorine and total calcium in goods bleach is measured respectively. The test results indicate that acid choice is very important in the measurement. The use of HCI or HOAC can get accurate results, but using H2SO4 can decrease the result. At the same time drags adding sequence and dripping speed can influence the measuring results.