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	An efficient Cd two-stage column system for high-precision determination of Cd isotopic compositions by double spike MC-ICP-MS
通讯作者	Li, Tao(taoli@nigpas.ac.cn)
	Zhang, Zheyuan1; Li, Tao2; Li, Baichan2; Lin, Yibo1; Li, Gaojun3; Chen, Tianyu1
	2024-03-11
发表期刊	JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
ISSN	0267-9477
页码	10
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.
DOI	10.1039/d3ja00468f
收录类别	SCI
语种	英语
关键词[WOS]	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
WOS类目	Chemistry, Analytical ; Spectroscopy
WOS记录号	WOS:001184976600001
项目资助者	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
出版者	ROYAL SOC CHEMISTRY
文献类型	期刊论文
条目标识符	http://ir.nigpas.ac.cn/handle/332004/43518
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, State Key Lab Mineral Deposits Res, 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, MOE Key Lab Surficial Geochem, 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.

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