典型文献
Assessment of Different Digestion Procedures for Mo Isotope Measurements of Black and Grey Shales Using the Double Spike Technique
文献摘要：
This study investigates the behavior of Mo and Mo isotopes (δ98Mo) in shales following leaching with HCl and HNO3 with the aim of simplifying the shale dissolution procedure. Up to 6％of the Mo was lost and the Mo isotopes were unaffected when shales were leached using 9 M HCl after ashing. Bulk sample digestion or leaching by 4 M or more concentrated HCl after ashing were all found to be acceptable and reliable approaches to the analysis of Mo isotopes in shales. After black shale (CAGS-BS) was leached with 2 M HCl, 1 M HCl, and 9 M HNO3, the Mo concentration ([Mo]) in the leachate was lower and δ98Mo was heavier than that obtained from bulk digestion. A Mo isotope mass-balance model showed that theδ98Mo in the residues was lighter than theδ98Mo from the bulk di- gestion of CAGS-BS and of crustal igneous rocks. No more Mo was lost, nor did Mo isotope fraction- ation, if the double spike was added before rather than after ashing and followed by bulk digestion or leaching with 9 M HCl. For efficiency, leaching using 4 M or more concentrated HCl after ashing is pre- ferred for Mo isotope measurements.
文献关键词：
中图分类号：
作者姓名：
Jin Li;Xiangkun Zhu;Suohan Tang
作者机构：
MNR Key Laboratory of Isotope Geology,MNR Key Laboratory of Deep-Earth Dynamics,Institute of Geology,Chinese Academy of Geological Sciences,Beijing 100037,China
文献出处：
引用格式：
[1]Jin Li;Xiangkun Zhu;Suohan Tang-.Assessment of Different Digestion Procedures for Mo Isotope Measurements of Black and Grey Shales Using the Double Spike Technique)[J].地球科学学刊（英文版）,2022(01):76-81
A类：
98Mo,ashing,CAGS,gestion
B类：
Assessment,Different,Digestion,Procedures,Isotope,Measurements,Black,Grey,Shales,Using,Double,Spike,Technique,This,study,investigates,behavior,isotopes,shales,following,leaching,HCl,HNO3,aim,simplifying,dissolution,procedure,Up,was,lost,were,unaffected,when,leached,using,after,Bulk,sample,digestion,by,more,concentrated,all,found,acceptable,reliable,approaches,analysis,After,black,BS,concentration,leachate,lower,heavier,than,that,obtained,from,bulk,mass,balance,model,showed,residues,lighter,crustal,igneous,rocks,No,nor,did,fraction,double,spike,added,before,rather,followed,For,efficiency,pre,ferred,measurements
AB值：
0.462407
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