ASTM E203-16
采用菲舍尔-卡尔容积滴定法测定水的标准试验方法
Standard Test Method for Water Using Volumetric Karl Fischer Titration
- 标准号
- ASTM E203-16
- 发布
- 2016年
- 发布单位
- 美国材料与试验协会
- 替代标准
- ASTM E203-23
- 当前最新
- ASTM E203-24
- 引用标准
- ASTM D1123 ASTM D1152 ASTM D1193 ASTM D1348 ASTM D1364 ASTM D1533 ASTM D1568 ASTM D1631 ASTM D2072 ASTM D2575 ASTM D3277 ASTM D3401 ASTM D4017 ASTM D4377 ASTM D4672 ASTM D4928 ASTM D5460 ASTM D5530 ASTM D6304 ASTM D789 ASTM D803 ASTM D890 ASTM E1064 ASTM E180
- 适用范围
4.1 Titration techniques using KF reagent are one of the most widely used for the determination of water.
4.2 Although the volumetric KF titration can determine low levels of water, it is generally accepted that coulometric KF titrations (see Test Method E1064) are more accurate for routine determination of very low levels of water. As a general rule, if samples routinely contain water concentrations of 500 mg/kg or less, the coulometric technique should be considered.
4.3 Applications can be subdivided into two sections: (1) organic and inorganic compounds, in which water may be determined directly, and (2) compounds, in which water cannot be determined directly, but in which interferences may be eliminated by suitable chemical reactions or modifications of the procedure. Further discussion of interferences is included in Section 5 and Appendix X2.
4.4 Water can be determined directly in the presence of the following types of compounds: