Contents Foreword 1 Scope 2 Normative references 3 Arsenic-molybdenum blue photometric method (arbitration act) 4 Hydride generation-atomic absorption method 5 Test report Annex A (Informative) Comparison between Clause Number of This Standard and Clause Number of ISO 11723:2004 Annex B (Informative) Technical Differences of Clause Number of This Standard and ISO 11723:2004 and Reasons