China 'GB/T 31231-2014
' standard english version:
NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 31231-2014
Determination of zinc and lead isotopic ratios in aqueous solution―Multiple-collectors inductively coupled plasma mass spectrometry 水中锌、铅同位素丰度比的测定 多接收电感耦合等离子体质谱法
Issued Date:2014-09-30
Implemented Date:2015-04-15
Issued by:
The Standardization Administration of the People's Republic of China