Standards GB - Chinese national standards - Page 5746

Lanthanum oxide, cerium oxide, neodymium oxide, gadolinium oxide--Determination of cobalt, iron, manganese, nichel, copper, ckromium, lead and zinc in oxides contents--Emission spectrographic method

WITHDRAWN published on 1.1.1990

Rare-earth metals and their oxides--Determination of thorium content--Arsenazo IIIspectrophotometric method

WITHDRAWN published on 1.1.1990

Chemical analysis methods for non-rare earth metals and their oxide—Determination of calcium oxide content

WITHDRAWN published on 13.4.2006

Rare-earthmetals and their oxides--Determination of calcium content--Flame atomic absorption spectrometric method

WITHDRAWN published on 30.12.1990

Rare-earth metals and their oxides--Determination of calcium content--Nitrous oxide-acetylene flame atomic absorption spectrometric method

WITHDRAWN published on 30.12.1990

Rare-earth metals and their oxides--Determination of chlorine content--Mercury sulphoeyanie-iron nitrate spectrophotometric method

WITHDRAWN published on 1.1.1990

Rare-earth metals and their oxides--Determination of iron content--110-phenanthroline spectrophotometric method

WITHDRAWN published on 30.12.1990

Lanthanum oxide--Determination of neodymium oxide, cerium oxide, praseodymium oxide, samarium oxide and yttrium oxide contents-Emission spectrographic method

WITHDRAWN published on 1.1.1990

Chemical analysis methods for non—RE impurity of rare earth metals and their oxides—Determination of ignition loss content of rare earth oxides—Gravimetric method

WITHDRAWN published on 19.11.2002

Rare-earth metals and their oxides--Determination of iron content--Potassium thiocyanate, 1, 10-phenanthroline spectrophotometric method

WITHDRAWN published on 1.1.1990