Standard No.:	GB/T 21931.3-2008
English Name:	Nickel ferronickel and nickel alloys - Determination of phosphorus content - Phosphovanoclonolybeate molecular absorption spectrometric method
Chinese Name:	镍、镍铁和镍合金 磷含量的测定 磷钒钼黄分光光度法
Chinese Classification:	H11    Steel and iron alloy analysis method
Professional Classification:	GB    National Standard
Issued by:	AQSIQ; SAC
Issued on:	2008-5-30
Implemented on:	2008-12-1
Status:	valid
Language:	English
File Format:	PDF
Word Count:	3000 words
Price(USD):	90.00
Delivery:	via email in 1~3 business day

ＧＢ／Ｔ２１９３１的本部分规定了磷钒钼黄分光光度法测定镍、镍铁和镍合金中磷含量。
本部分适用于镍，镍铁和镍合金中磷含量的测定。测定范围（质量分数）：０．０００５％～０．０５％。
可用络合效应和挥发性（如，铬）排除砷、铬、铪、铌、硅、钽、钛和钨等元素的干扰。在干扰元素含量低时，所测量的磷含量最低达到０．０００５％（质量分数）。