2015YS/T 569.8-2015 Methods for chemical analysis of thallium.Part 8:Determination of indium content.Crystal violet benzene extraction spectrophotometry
2006YS/T 569.8-2006 Determination of indium content in thallium (crystal violet benzene extraction absorptiometry)
YS/T 569.8-2006 Determination of indium content in thallium (crystal violet benzene extraction absorptiometry) has been changed from GB/T 2592.8-1981 Thallium--Determination of indium content--Crystal violet extraction photometric method.