HJ 536-2009 Water quality-Determination of ammonia nitrogen—Salicylic acid spectrophotometry (Text of Document is in English)

01/04/2010

17P

$100.00 USD

Contents
Foreword
1 Scope of application
2 Method principle
3 Interference and elimination
4 Reagents and materials
5 Instruments and equipments
6 Sample
7 Analytical procedures
8 Results representation
9 Accuracy and precision
10 Quality assurance and quality control
Annex A (Normative) The preparation method of sodium hypochlorite solution and its available chlorine concentration and the standardization of free alkali concentration
Appendix B (Informative) The influence of co-existing ion and its elimination