GB/T 12690.20-2024 稀土金属及其氧化物中非稀土杂质化学分析方法 第20部分：稀土氧化物中微量氟、氯的测定 离子色谱法

ICS 77.120.99
CCS H 14
中华人民共和国国家标准
GB/T 12690.20—2024
稀土金属及其氧化物中非稀土杂质
化学分析方法
第20 部分：稀土氧化物中微量氟、
氯的测定　离子色谱法
Chemical analysis methods for non-rare earth impurities of rare
earth metals and their oxides—
Part 20: Determination of minor amounts of fluorine and chlorine
in rare earth oxides—Ion chromatography method
2024-11-28 发布2025-06-01 实施
国家市场监督管理总局
国家标准化管理委员会发 布

目　　次
前言 ····································································································· Ⅲ
引言 ····································································································· Ⅳ
1 范围 ·································································································· 1
2 规范性引用文件 ······················································································ 1
3 术语和定义 ··························································································· 1
4 原理 ·································································································· 1
5 试剂或材料 ··························································································· 1
6 仪器设备 ······························································································ 2
7 样品 ·································································································· 2
8 试验步骤 ······························································································ 3
8.1 试料 ······························································································ 3
8.2 平行试验 ························································································· 3
8.3 空白试验 ························································································· 3
8.4 分析试液的制备 ················································································· 3
8.5 系列标准溶液的配制 ············································································· 3
8.6 标准曲线的绘制 ················································································· 3
8.7 测定 ······························································································ 4
9 试验数据处理 ························································································· 4
10 精密度 ······························································································· 4
10.1 精密度原始数据及统计 ········································································· 4
10.2 重复性 ·························································································· 4
10.3 再现性 ·························································································· 5


前　　言
本文件按照GB/T 1.1—2020《标准化工作导则　第1 部分：标准化文件的结构和起草规则》的规
定起草。
本文件是GB/T 12690《稀土金属及其氧化物中非稀土杂质化学分析方法》的第20 部分。GB/T 12690
已经发布了以下部分：
—第1部分：碳、硫量的测定　高频﹘红外吸收