標準號：ISO 11436-1993
中文標準名稱：鎳和鎳合金 硼總含量的測定 姜黃分子吸收光譜法
英文標準名稱：Nickel and nickel alloys; determination of total boron content; curcumin molecular absorption spectrometric method
標準類型：H62
發布日期：1999/12/31 12:00:00
實施日期：1999/12/31 12:00:00
中國標準分類號：H62
國際標準分類號：77.120.40
適用范圍：The principle of the method specified is dissolving a test portion in hydrochloric and nitric acids, decomposing resistant boron compounds (e.g. boron nitrides) by fuming the sample solution with phosphoric and sulfuric acids at not less than 290 鳦, forming the boron curcumin complex in a buffered acetic acid and sulfuric acid medium, and measuring the absorbance of the test solution in a molecular absorption spectrometer at 543 nm. Applies to nickel and nickel alloys having a total boron content in the range of 4 g/t to 240 g/t.