Standard No.:	GB/T 12690.21-2024
English Name:	Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides—Part 21：Determination of sulfate radical content in rare earth oxides—Barium sulfate turbidimetry
Chinese Name:	稀土金属及其氧化物中非稀土杂质化学分析方法 第21部分：稀土氧化物中硫酸根含量的测定 硫酸钡比浊法
Chinese Classification:	H14    Rare metals and their alloys analysis method
Professional Classification:	GB    National Standard
ICS Classification:	77.120.99 77.120.99    Other non-ferrous metals and their alloys 77.120.99
Issued by:	SAMR; SAC
Issued on:	2024-10-26
Implemented on:	2025-5-1
Status:	to be valid
Language:	English
File Format:	PDF
Word Count:	7000 words
Price(USD):	210.0
Delivery:	via email in 1~3 business day

本文件描述了稀土氧化物中硫酸根含量的测定方法。
本文件适用于稀土氧化物中硫酸根含量的测定。测定范围（质量分数）：0.010%～0.20%。