Abstract / scope
This International Standard specifies a method for the determination of the following six water-soluble organic complexing agents in the concentration range from 0,5 micrograms/litre to 200 micrograms/litre:
- EDTA (ethylenedinitrilotetraacetic acid);
- NTA (nitrilotriacetic acid);
- DTPA (diethylenetrinitrilopentaacetic acid);
- MGDA (methylglycinediacetic acid);
- ß-ADA (ß-alaninediacetic acid);
- 1,3-PDTA (1,3-propylenedinitrilotetraacetic acid).
The method is applicable to drinking, ground, surface and waste water.