Effect of aluminum fluoride formation on ICP-MS determination of critical metals in alumina-rich coal fly ash
文献类型：期刊论文
| 作者 | Geng, Jiawei4; Zhao, Lei4; Wei, Qiang3; Hower, James C.1,2; Dai, Shifeng4 |
| 刊名 | TALANTA
 |
| 出版日期 | 2026-02-01 |
| 卷号 | 298页码:129018 |
| 关键词 | Alumina-rich fly ash Critical metals Aluminum fluoride (AlF 3 ) Co-precipitation Microwave-assisted digestion Ultrafine grinding |
| ISSN号 | 0039-9140 |
| DOI | 10.1016/j.talanta.2025.129018 |
| 产权排序 | 2 |
| 文献子类 | Article |
| 英文摘要 | Coal fly ash is a potential source of critical metals, and accurate trace element analysis is essential for evaluating its resource value and environmental impact. Inductively Coupled Plasma - Mass Spectrometry (ICP-MS) is widely used due to its low detection limits and its capability of multi-element determination. In this study, a mixture of acids (5 mL HF + 2 mL HNO3 for each 50 mg sample) was used for microwave-assisted digestion of fly ashes from eight Chinese coal-fired power plants and NIST Standard Reference Materials (SRMs) 1633b and 1633c. For low-alumina samples and SRM 1633c, ICP-MS results were consistent with those from X-ray fluorescence spectroscopy (XRF). However, for alumina-rich fly ashes, ICP-MS significantly underestimated most elements. In the worst case, the ICP-MS/XRF ratios for Sc, Ga, Rb, Sr, Y, Ba, La, and Ce in a single sample ranged from 0.37 to 0.68. XRD and EPMA analyses revealed that the formation of AlF3 during digestion caused co-precipitation and trace element loss. To address this issue, a digestion method using ultrafine grinding (<23 mu m, 600 mesh) and lower test portion mass (<20 mg) was developed. This modification effectively suppressed AlF3 formation by lowering the aluminum concentration in solution, resulting in improved ICP-MS/XRF ratios (>0.84) for alumina-rich samples. The method was further validated with additional high-alumina samples and SRMs 1633b and 1633c. This study proposes a simple yet effective pretreatment method to enhance the reliability of ICP-MS results for critical metal determination, which can serve as a valuable reference for elemental analysis of alumina-rich geological and environmental samples. |
| URL标识 | 查看原文 |
| WOS关键词 | RARE-EARTH-ELEMENTS ; MICROWAVE DIGESTION ; ROCK DISSOLUTION ; TRACE-ELEMENTS ; INNER-MONGOLIA ; ACID DIGESTION ; SAMPLES ; COPRECIPITATION ; SUPPRESSION ; BOMB |
| WOS研究方向 | Chemistry |
| 语种 | 英语 |
| WOS记录号 | WOS:001608554200001 |
| 出版者 | ELSEVIER |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/217685]  |
| 专题 | 资源利用与环境修复重点实验室_外文论文 |
| 通讯作者 | Zhao, Lei |
| 作者单位 | 1.Univ Kentucky, Ctr Appl Energy Res, 2540 Res Pk Dr, Lexington, KY 40511 USA; 2.Univ Kentucky, Dept Earth & Environm Sci, Lexington, KY 40506 USA 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China; 4.China Univ Min & Technol Beijing, Coll Geosci & Survey Engn, Beijing 100083, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Geng, Jiawei,Zhao, Lei,Wei, Qiang,et al. Effect of aluminum fluoride formation on ICP-MS determination of critical metals in alumina-rich coal fly ash[J]. TALANTA,2026,298:129018. |
| APA | Geng, Jiawei,Zhao, Lei,Wei, Qiang,Hower, James C.,&Dai, Shifeng.(2026).Effect of aluminum fluoride formation on ICP-MS determination of critical metals in alumina-rich coal fly ash.TALANTA,298,129018. |
| MLA | Geng, Jiawei,et al."Effect of aluminum fluoride formation on ICP-MS determination of critical metals in alumina-rich coal fly ash".TALANTA 298(2026):129018. |
入库方式： OAI收割
来源：地理科学与资源研究所
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