DB21/T 3540-2021 化学试剂中氯化物的测定 浊度计法

ICS71.040.30

CCSG60

21

辽宁省地方标准

DB21/T3540—2021

化学试剂中氯化物的测定浊度计法

Themanualforthedeterminationofchlorideinchemicalreagentby

turbiditymeter

2021-12-30发布2022-01-30实施

辽宁省市场监督管理局发布

DB21/T3540—2021

目次

前言...........................................................................II

1范围................................................................................1

2规范性引用文件......................................................................1

3术语和定义..........................................................................1

4方法原理............................................................................1

5试剂和材料..........................................................................1

5.1一般规定........................................................................1

5.2无二氧化碳水....................................................................2

5.3硼酸溶液，40g/L................................................................2

5.4硝酸溶液，25%..................................................................2

5.5硝酸溶液，50%..................................................................2

5.6碳酸钠溶液，50g/L..............................................................2

5.7硝酸银溶液，17g/L..............................................................2

5.8氯化物标准溶液..................................................................2

6仪器设备............................................................................2

6.1常规器皿........................................................................2

6.2分析天平........................................................................2

6.3水浴锅..........................................................................2

6.4浊度计..........................................................................2

7测定................................................................................3

7.1样品前处理......................................................................3

7.2标准曲线的绘制..................................................................4

7.3样品测定........................................................................4

8结果计算............................................................................4

9说明..............................................................................