An efficient Cd two-stage column system for high-precision determination of Cd isotopic compositions by double spike MC-ICP-MS
文献类型：期刊论文
| 作者 | Zhang, Zheyuan3; Li, Tao2; Li, Baichan2; Lin, Yibo3; Li, Gaojun1; Chen, Tianyu3 |
| 刊名 | JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
 |
| 出版日期 | 2024-03-11 |
| 页码 | 10 |
| ISSN号 | 0267-9477 |
| DOI | 10.1039/d3ja00468f |
| 通讯作者 | Li, Tao(taoli@nigpas.ac.cn) |
| 英文摘要 | There has been a growing interest in using cadmium (Cd) isotopes to trace the source of Cd contamination and Cd cycling in the Earth surface. Yet it remains technically challenging to precisely and efficiently determine the Cd isotopic compositions of samples with extremely low Cd concentrations due to the imperfect separation of Cd from the matrix and the interference caused by resin-derived organics when TRU Spec resin was used. In this study, we present a two-stage column chromatography system (AG-MP-1M resin + UTEVA resin) for Cd purification. Here, a Prefilter resin combined with UTEVA resin effectively purifies Cd from Sn after the separation of Cd by AG-MP-1M column while keeping the phosphorous organic compounds to an acceptable level. In contrast to TRU Spec resin, which is prone to leaking through the Prefilter resin, we find that UTEVA resin is effectively retained by the Prefilter resin, thus avoiding the P-related anomalous shifts in the Cd isotope measurement (P/Cd < 1). UTEVA resin also exhibits a comparable capacity for purifying Cd from Sn and Mo when compared to TRU Spec resin. The recovery of the two-stage column system is generally higher than 99% and the procedural blank accounting for sample digestion and chemical purification is lower than 20 pg. The Cd isotopic compositions of several reference materials are determined using double spike MC-ICP-MS, with a Cd-111-Cd-113 double spike pair optimized for the Cd-111, Cd-112, Cd-113, and Cd-114 inversion. The delta Cd-114/110 values of these reference materials relative to NIST SRM 3108 agree within analytical uncertainty with previous studies. The long-term external precision of delta Cd-114/110 determined based on replicated measurements of BCR-2 is 0.04 parts per thousand (n = 10, 2 SD) for a minimum sample size of 10 ng. Our study thus provides an efficient two-stage column system for determining the Cd isotopic compositions of geological samples with relatively low Cd concentrations. |
| WOS关键词 | GEOLOGICAL REFERENCE MATERIALS ; CADMIUM ; FRACTIONATION ; SEAWATER ; SEPARATION ; SIGNATURE ; SAMPLES ; INDIUM ; SOILS ; ZINC |
| 资助项目 | National Key Research and Development Program of China[92358301] ; National Key Research and Development Program of China[42372211] ; National Key Research and Development Program of China[41991325] ; National Natural Science Foundation of China[2023YFF0806100] ; National Key Research and Development Program of China ; Key Laboratory of Palaeobiology and Petroleum Stratigraphy |
| WOS研究方向 | Chemistry ; Spectroscopy |
| 语种 | 英语 |
| WOS记录号 | WOS:001184976600001 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 资助机构 | National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; Key Laboratory of Palaeobiology and Petroleum Stratigraphy |
| 源URL | [http://ir.nigpas.ac.cn/handle/332004/43517]  |
| 专题 | 中国科学院南京地质古生物研究所 |
| 通讯作者 | Li, Tao |
| 作者单位 | 1.Nanjing Univ, Sch Earth Sci & Engn, MOE Key Lab Surficial Geochem, Nanjing, Peoples R China 2.Nanjing Inst Geol & Palaeontol, Chinese Acad Sci, Key Lab Palaeobiol & Petr Stratig, Nanjing, Peoples R China 3.Nanjing Univ, Sch Earth Sci & Engn, State Key Lab Mineral Deposits Res, Nanjing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Zheyuan,Li, Tao,Li, Baichan,et al. An efficient Cd two-stage column system for high-precision determination of Cd isotopic compositions by double spike MC-ICP-MS[J]. JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY,2024:10. |
| APA | Zhang, Zheyuan,Li, Tao,Li, Baichan,Lin, Yibo,Li, Gaojun,&Chen, Tianyu.(2024).An efficient Cd two-stage column system for high-precision determination of Cd isotopic compositions by double spike MC-ICP-MS.JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY,10. |
| MLA | Zhang, Zheyuan,et al."An efficient Cd two-stage column system for high-precision determination of Cd isotopic compositions by double spike MC-ICP-MS".JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY (2024):10. |
入库方式： OAI收割
来源：南京地质古生物研究所
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