High‐Precision Cd Isotope Measurements of Soil and Rock Reference Materials by MC‐ICP‐MS with Double Spike Correction,Geostandards and Geoanalytical Research

当前位置： X-MOL 学术 › Geostand. Geoanal. Res. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

High‐Precision Cd Isotope Measurements of Soil and Rock Reference Materials by MC‐ICP‐MS with Double Spike Correction
Geostandards and Geoanalytical Research ( IF 2.7 ) Pub Date : 2019-09-23 , DOI: 10.1111/ggr.12291
Meng‐Shu Liu ₁ , Qun Zhang ₁ , Yingnan Zhang ₁ , Zhaofeng Zhang ₂ , Fang Huang _{1,

3} , Hui‐Min Yu _{1,

3}

Affiliation

This study presents a high‐precision Cd isotope measurement method for soil and rock reference materials using MC‐ICP‐MS with double spike correction. The effects of molecular interferences (e.g., ¹⁰⁹Ag¹H⁺, ⁹⁴Zr¹⁶O⁺, ⁹⁴Mo¹⁶O⁺ and ⁷⁰Zn⁴⁰Ar⁺) and isobaric interferences (e.g., Pd, In and Sn) to Cd isotope measurements were quantitatively evaluated. When the measured solution has Ag/Cd ≤ 5, Zn/Cd ≤ 0.02, Mo/Cd ≤ 0.4, Zr/Cd ≤ 0.001, Pd/Cd ≤ 5 × 10⁻⁵ and In/Cd ≤ 10⁻³, the measured Cd isotope data were not significantly affected. The intermediate measurement precision of pure Cd solutions (BAM I012 Cd, Münster Cd and AAS Cd) was better than ± 0.05‰ (2s) for δ^114/110Cd. The δ^114/110Cd values of soil reference materials (NIST SRM 2709, 2709a, 2710, 2710a, 2711, 2711a and GSS‐1) relative to NIST SRM 3108 were in the range of −0.251 to 0.632‰, the δ^114/110Cd values of rock reference materials (BCR‐2, BIR‐1, BHVO‐2, W‐2, AGV‐2, GSP‐2 and COQ‐1) varied from −0.196‰ to 0.098‰, and that of the manganese nodule (NOD‐P‐1) was 0.163 ± 0.040‰ (2s, n = 8). The large variation in Cd isotopes in soils and igneous rocks indicates that they can be more widely used to study magmatic and supergene processes.

中文翻译：

采用双峰校正的MC-ICP-MS进行土壤和岩石参考物质的高精度Cd同位素测量

这项研究提出了一种使用双尖峰校正的MC-ICP-MS对土壤和岩石参考材料进行高精度Cd同位素测量的方法。分子干扰的效应（例如，。 ¹⁰⁹的Ag ¹ ħ ⁺，⁹⁴ Zr的¹⁶ Ò ⁺，⁹⁴沫¹⁶ Ò ⁺和⁷⁰锌⁴⁰的Ar ⁺）和同量异序的干扰（例如，钯，In和Sn）以镉同位素测量被定量评估。当测量溶液的Ag / Cd≤5，Zn / Cd≤0.02，Mo / Cd≤0.4，Zr / Cd≤0.001，Pd / Cd≤5×10 ^-5和In / Cd≤10^-3，测得的Cd同位素数据未受到明显影响。的纯镉溶液（BAM I012镉，明斯特Cd和AAS Cd）的中间测量精度好于±0.05‰（2个小号为δ）^110分之114镉。所述δ ^110分之114土壤参考材料的CD值（NIST SRM 2709，2709a，2710，2710A，2711，2711a和GSS-1）相对于NIST SRM 3108是在-0.251至0.632‰，δ ^{114 /}岩石参考材料（BCR-2，BIR-1，BHVO-2，W-2，AGV-2，GSP-2和COQ-1）的¹¹⁰ Cd值在-0.196‰至0.098‰之间，锰结节（NOD-P-1）为0.163±0.040‰（2 s，n = 8）。土壤和火成岩中Cd同位素的巨大变化表明它们可以更广泛地用于研究岩浆作用和表生作用过程。

更新日期：2019-09-23

点击分享查看原文

点击收藏

阅读更多本刊最新论文