钨精矿化学分析方法 第20部分:汞含量的测定 固体进样直接测定法 Methods for chemical analysis of tungsten concentrates— Part 20：Determination of mercury content— Solid sampling and direct mercury analysis method  ICS  77.120.99 CCS  H 14   中华人民共和国国家标准 GB/T 6150.20—2025 2025-01-2 4发布 2025-08-0 1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   ······························································································   2      8.1     试料   ······························································································   2      8.2     平行试验   ·························································································   2      8.3     测定   ······························································································   2      8.4     工作曲线的绘制   ·················································································   2 9     试验数据处理   ·························································································   3 10     精密度   ·······························································································   3      10.1     重复性   ··························································································   3      10.2     再现性   ··························································································   3 11     试验报告   ····························································································   3 附录A （资料性）    固体测汞仪推荐的仪器参数   ·······················································   5 附录B （资料性）    精密度试验原始数据   ·······························································   6 GB/T 6150.20—2025     Ⅰ 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 6150《钨精矿化学分析方法》的第20部分。GB/T 6150已经发布了以下部分： 第1部分：三氧化钨含量的测定　钨酸铵灼烧重量法； — 第2部分：锡含量的测定　碘酸钾滴定法和电感耦合等离子体原子发射光谱法； — 第3部分：磷含量的测定　磷钼黄分光光度法和电感耦合等离子体原子发射光谱法； — 第4部分：硫含量的测定　高频感应红外吸收法和燃烧﹘碘量法； — 钙量的测定   EDTA容量法和火焰原子吸收光谱法（GB/T 6150.5）； — 第6部分：湿存水含量的测定　重量法； — 钽铌量的测定　等离子体发射光谱法和分光光度法（GB/T 6150.7）； — 第8部分：钼含量的测定　硫氰酸盐分光光度法； — 铜量的测定　火焰原子吸收光谱法（GB/T 6150.9）； — 第10部分：铅含量的测定　氢化物发生原子荧光光谱法和火焰原子吸收光谱法； — 锌量的测定　火焰原子吸收光谱法（GB/T 6150.11）； — 第12部分：二氧化硅含量的测定　硅钼蓝分光光度法和重量法； — 第13部分：砷含量的测定　原子荧光光谱法和DDTC﹘Ag分光光度法； — 锰量的测定　硫酸亚铁铵容量法和火焰原子吸收光谱法（GB/T 6150.14）； — 第15部分：铋含量的测定　氢化物发生原子荧光光谱法和火焰原子吸收光谱法； — 铁量的测定　磺基水杨酸分光光度法（GB/T 6150.16）； — 第17部分：锑含量的测定　原子荧光光谱法； — 第18部分：钡含量的测定　电感耦合等离子体原子发射光谱法； — 第19部分：氟含量的测定　离子选择电极法； — 第20部分：汞含量的测定　固体进样直接测定法。 — 请注意本文件的某些内容可能涉及专利。本文件的发布机构不承担识别专利的责任。 本文件由中国有色金属工业协会提出。 本文件由全国有色金属标准化技术委员会（SAC/TC 243）归口。 本文件起草单位：江西省钨与稀土产品质量监督检验中心（江西省钨与稀土研究院）、中国有色桂 林矿产地质研究院有限公司、深圳市中金岭南有色金属股份有限公司韶关冶炼厂、西安汉唐分析检测有 限公司、国标（北京）检验认证有限公司、宁波海关技术中心、江西理工大学。 本文件主要起草人：徐娜、凌宏焕、李建国、曾庆平、陈祝炳、谷娟平、左鸿毅、师世龙、 李胜利、张小燕、王立、岳文颖、付冉冉、张建波、杨凯、王仙凡。   GB/T 6150.20—2025     Ⅲ 引　　言 钨精矿是一种重要的战略资源，以其作为重要工业原料生产的钨及钨合金，由于具有高熔点、高比 重、高硬度的特点，广泛应用于机械加工、冶金、采矿、电子电讯、建筑工业、兵器工业、航空航天等 领域。GB/T 6150旨在通过实验研究建立一套完整、切实可行、且适应于钨精矿产品生产和贸易需求的 化学成分分析的方法标准。限于文件篇幅、使用需求、适用范围以及各分析方法之间的技术独立性等方 面原因，GB/T 6150拟由20个部分构成。 第1部分：三氧化钨含量的测定。目的在于建立重量法测定钨精矿中三氧化