Simple and cost-effective methods for precise analysis of trace element abundances in geological materials with ICP-MS
文献类型：CNKI期刊论文
| 作者 | Shuo Chen; Xiaohong Wang; Yaoling Niu; Pu Sun ; Meng Duan; Yuanyuan Xiao; Pengyuan Guo; Hongmei Gong; Guodong Wang; Qiqi Xue
|
| 发表日期 | 2017-02-28 |
| 出处 | Science Bulletin
 |
| 关键词 | Inductively coupled plasma mass spectrometry High-pressure digestion Oxide and hydroxide interferences Instrumental drift Correction methods Trace elements |
| 英文摘要 | Inductively coupled plasma mass spectrometry(ICP-MS) is the most commonly used technique to determine the abundances of trace elements in a wide range of geological materials. However, incomplete sample digestion, isobaric interferences and instrumental drift remain obvious problems that must be overcome in order to obtain precise and accurate results. For this reason, we have done many experiments and developed a set of simple, cost-effective and practical methods widely applicable for precise and rapid determination of trace element abundances in geological materials using ICP-MS. Commonly used high-pressure digestion technique is indeed effective in decomposing refractory phases, but this inevitably produces fluoride complexes that create new problems. We demonstrate that the fluoride complexes formed during high-pressure digestion can be readily re-dissolved using high-pressure vessel at 190 °C for only 2 h for 50 mg sample. In the case of isobaric interferences, although oxide(e.g., MO+/M+) and hydroxide(e.g., MOH+/M+) productivity is variable between runs, the(MO+/M+)/(Ce O+/Ce+)and(MOH+/M+)/(Ce O+/Ce+) ratios remain constant, making isobaric interference correction for all other elements of interest straightforward, for which we provide an easy-to-use off-line procedure. We also show that mass-time-intensity drift curve is smooth as recognized previously, for which the correction can be readily done by analyzing a quality-control(QC) solution and using off-line Excel VBA procedure without internal standards. With these methods, we can produce data in reasonable agreement with recommended values of international rock reference standards with a relative error of <8% and precision generally better than 5%. Importantly, compared to the widely used analytical practice, we can effectively save >60% of time(e.g., <24 h vs. >60 h). |
| 文献子类 | CNKI期刊论文 |
| 资助机构 | supported by National Natural Science Foundation of China (41130314 and 41630968) ; Chinese Academy of Sciences Innovation Grant (Y42217101L) ; Qingdao National Laboratory for Marine Science and Technology (2015ASKJ03) ; Marine Geological Process and Environment (U1606401) |
| 卷 | v.62期:04页:53-65 |
| 语种 | 英文; |
| 分类号 | P624 |
| ISSN号 | 2095-9273 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/189386]  |
| 专题 | 中国科学院海洋研究所 |
| 作者单位 | 1.InstituteofOceanology,ChineseAcademyofSciences 2.LaboratoryforMarineGeology,QingdaoNationalLaboratoryforMarineScienceandTechnology 3.UniversityofChineseAcademyofSciences 4.DepartmentofEarthSciences,DurhamUniversity 5.SchoolofEarthScienceandMineralResources,ChinaUniversityofGeosciences |
| 推荐引用方式 GB/T 7714 | Shuo Chen,Xiaohong Wang,Yaoling Niu,et al. Simple and cost-effective methods for precise analysis of trace element abundances in geological materials with ICP-MS. 2017. |
入库方式： OAI收割
来源：海洋研究所
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