Determination of zinc content in thallium (dithizone benzene extraction absorptiometry)
GB/T 2592.4-1981 history
1981GB/T 2592.4-1981 Thallium--Determination of zinc content--Dithizone extraction photometric method
GB/T 2592.4-1981 Thallium--Determination of zinc content--Dithizone extraction photometric method was changed to YS/T 569.4-2006 Determination of zinc content in thallium (dithizone benzene extraction absorptiometry).