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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
GB-T 6150.20-2025 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
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