ICS71.040.50 CCSD53 NMRJ 内蒙古认证和检验检测协会团体标准 T/NMRJ029—2025 铁矿石中氟化钙含量的测定电感耦合等离 子体发射光谱法 Determinationofcalciumfluoridecontentinironorebyinductivelycoupledplasma emissionspectroscopy 2025-07-17发布 2025-07-17实施 内蒙古认证和检验检测协会  发布 全国团体标准信息平台 全国团体标准信息平台 T/NMRJ029—2025 I目次 前言........................................................................................................................................................................II 1范围.....................................................................................................................................................................1 2规范性引用文件................................................................................................................................................1 3方法原理............................................................................................................................................................1 4试剂和材料........................................................................................................................................................1 4.1一般规定.....................................................................................................................................................1 4.2钙标准溶液.................................................................................................................................................1 4.310%乙酸溶液.............................................................................................................................................1 4.480g/LAlCl3溶液..........................................................................................................................................1 5仪器和设备........................................................................................................................................................2 分析天平.....................................................................................................................................................2 电感耦合等离子体发射光谱仪.................................................................................................................2 6样品.....................................................................................................................................................................2 样品制备.....................................................................................................................................................2 样品前处理.................................................................................................................................................2 样品空白.....................................................................................................................................................2 7分析步骤............................................................................................................................................................2 仪器参数.....................................................................................................................................................2 标准曲线的绘制.........................................................................................................................................2 试样的测定.................................................................................................................................................3 空白试样的测定.........................................................................................................................................3 8结果计算与表示................................................................................................................................................3 氟化钙含量的计算.....................................................................................................................................3 结果表示.....................................................................................................................................................3 9精密度....