典型文献
Titanium Isotope Analysis of Igneous Reference Materials using a Double-spike MC-ICP-MS Method
文献摘要：
Ti separation was achieved by ion-exchange chromatography using Bio-Rad AG 1-X8 anion-exchange and DGA resins. For high-Fe/Ti and high-Mg/Ti igneous samples, a three-column procedure was required, whereas a two-column procedure was used for low-Fe/Ti and low-Mg/Ti igneous samples. The Ti isotopes were analysed by MC-ICP-MS, and instrumental mass bias was corrected using a 47Ti-49Ti double-spike technique. The 47Ti-49Ti double-spike and SRM 3162a were calibrated using SRM 979-Cr, certificated value 53Cr/52Crtrue = 0.11339. Isobaric interference was evaluated by analysing Alfa-Ti doped with Na, Mg, Ca, and Mo, and results indicate that high concentrations of Na and Mg have no significant effect on Ti isotope analyses; however, Ca and Mo interferences lead to erroneous δ49/47Ti values when Ca/Ti and Mo/Ti ratios exceed 0.01 and 0.1, respectively. Titanium isotopic compositions were determined for 12 igneous reference materials, BCR-2, BHVO-2, GBW07105, AGV-1, AGV-2, W-2, GBW07123, GBW07126, GBW07127, GBW07101, JP-1, and DTS-2b. Samples yield δ49/47Ti (‰) of ?0.035 ± 0.022, ?0.038 ± 0.031, 0.031 ± 0.022, 0.059 ± 0.038, 0.044 ± 0.037, 0.000 ± 0.015, 0.154 ± 0.044, ?0.044 ± 0.018, 0.010 ± 0.022, 0.064 ± 0.043, 0.169 ± 0.034, and?0.047 ± 0.025 (relative to OL-Ti, ±2SD), respectively; of which isotopic compositions of DTS-2b, JP-1, GBW07101, GBW07105, GBW07123, GBW07126, and GBW07127 are reported for the first time. Standard Alfa-Ti was analysed repeatedly over a ten-month period, indicating a reproducibility of ±0.047 (2SD) for δ49/47Ti, similar to the precisions obtained for geochemical reference materials.
文献关键词：
中图分类号：
作者姓名：
LI Jin;TANG Suohan;ZHU Xiangkun;MA Jianxiong;ZHAO Xinmiao
作者机构：
MNR Key Laboratory of Isotope Geology,Institute of Geology,Chinese Academy of Geological Sciences,Beijing 100037,China;State Key Laboratory of Lithospheric Evolution,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China
文献出处：
引用格式：
[1]LI Jin;TANG Suohan;ZHU Xiangkun;MA Jianxiong;ZHAO Xinmiao-.Titanium Isotope Analysis of Igneous Reference Materials using a Double-spike MC-ICP-MS Method)[J].地质学报（英文版）,2022(02):517-524
A类：
47Ti,49Ti,3162a,certificated,53Cr,52Crtrue,Isobaric,GBW07123,GBW07126,GBW07127,GBW07101
B类：
Titanium,Isotope,Analysis,Igneous,Reference,Materials,using,Double,spike,MC,ICP,Method,separation,was,achieved,by,exchange,chromatography,Bio,Rad,X8,anion,DGA,resins,For,high,Mg,igneous,samples,three,column,procedure,required,whereas,two,used,low,isotopes,were,analysed,instrumental,mass,bias,corrected,double,technique,SRM,calibrated,evaluated,analysing,Alfa,doped,Na,Mo,results,indicate,that,concentrations,have,no,significant,effect,analyses,however,interferences,lead,erroneous,values,when,ratios,exceed,respectively,isotopic,compositions,determined,reference,materials,BCR,BHVO,GBW07105,AGV,JP,DTS,2b,Samples,yield,relative,OL,2SD,which,are,reported,first,Standard,repeatedly,over,ten,month,period,indicating,reproducibility,similar,precisions,obtained,geochemical
AB值：
0.484718
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