Determination of 15 major and minor components in manganese ore and marine polymetallic nodule by X-ray fluorescence spectrometry with fusion sample preparation
SU Jianzhi1, LUO Xuehui*2, DENG Hua2, LI Haidong2, MAN Yukai2, HU Xuebing2
1. Hebei Oriental University,Langfang 065000,China; 2. Langfang Natural Resources Comprehensive Survey Center of China Geological Survey,Langfang 065000,China
Abstract：Manganese ore and marine polymetallic nodule are two important manganese resources and their phases have high similarity.In this study,the mixture of lithium tetraborate,lithium metaborate and lithium fluoride(Li2B4O7-LiBO2-LiF) was used as flux.In order to solve the problem of embrittlement and cracking of marine polymetallic nodule sample with high copper content during fusion,the dilution ratio of 30∶1 was determined by experiments.Then m(Li2B4O7)∶m(LiBO2)∶m(LiF)=4.5∶1∶0.4 was added as flux, 2.000 0 g of NH4NO3 was added as oxidant,and the saturated solution of lithium bromide was selected as the release agent.The intact fusion pellet with good quality was prepared.The quantitative analysis method for the simultaneous determination of 15 components in manganese ore and marine polymetallic nodule(manganese nodule),including MnO,SiO2,Al2O3,TFe2O3,TiO2,CaO,K2O,MgO,BaO,P2O5,CuO,ZnO,PbO,NiO and CoO,was established.The proposed method was used for the analysis of national certified reference materials (GBW07263 and GBW07296),and the relative standard deviations(RSD) of determination results were between 0.11% and 4.8%.The analysis results of national primary certified reference materials of marine polymetallic nodule GBW07295 and manganese ore GBW07265,which did not participate in the regression,were basically consistent with the certified values.
苏建芝, 罗学辉, 邓华, 李海东, 满玉凯, 胡雪冰. 熔融制样-X射线荧光光谱法测定锰矿石及大洋多金属结核中15种主次成分[J]. 冶金分析, 2024, 44(7): 62-67.
SU Jianzhi, LUO Xuehui, DENG Hua, LI Haidong, MAN Yukai, HU Xuebing. Determination of 15 major and minor components in manganese ore and marine polymetallic nodule by X-ray fluorescence spectrometry with fusion sample preparation. , 2024, 44(7): 62-67.
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