This part of YS/T 716 specifies the method for determination of arsenic content in black copper. This section applies to the determination of arsenic content in black copper. Measuring range: 0.20%-1.0%.
YS/T 716.4-2009 history
2009YS/T 716.4-2009 Methods for chemical analysis of low grade blister.Part 4:Determination of arsenic content.Iodimetry