Identification and Speciation of Nanoscale Silver in Complex Solid Matrices by Sequential Extraction Coupled with Inductively Coupled Plasma Optical Emission Spectrometry
文献类型：期刊论文
| 作者 | Hong, Aimei; Tang, Qing; Khan, Ashfeen Ubaid; Miao, Maozhong; Xu, Zhenlan; Dang, Fei; Liu, Qian; Wang, Yawei; Lin, Daohui; Filser, Juliane |
| 刊名 | ANALYTICAL CHEMISTRY
 |
| 出版日期 | 2021-02-02 |
| 卷号 | 93期号:4页码:1962-1968 |
| ISSN号 | 0003-2700 |
| 英文摘要 | Nanoscale silver (n-Ag) including silver nanoparticles (Ag-NPs), silver chloride nanoparticles (AgCl-NPs), and silver sulfide nanoparticles (Ag2S-NPs) and their corresponding ionic counterpart, namely, dissolved Ag, may coexist in soils. X-ray absorption near edge spectroscopy (XANES) is used to elucidate the speciation of n-Ag in soils, whereas it possesses drawbacks like high costs, rare availability of the instrument, and providing semiquantitative data. We developed a new method for the identification and speciation of n-Ag in soils and sediments based on a sequential extraction technique coupled with inductively coupled plasma optical emission spectrometry. Extraction conditions were first evaluated, establishing the optimal extraction procedure; Ag-NPs, AgCl-NPs, and dissolved Ag in soil were simultaneously extracted by using an aqueous solution of 10 mM tetrasodium pyrophosphate, followed by selective isolation and quantification via AgCl-NPs dissolution (4.45 M aqueous ammonia), centrifugation (Ag-NPs), and detection. The Ag2S-NPs remaining in the soil were then extracted with Na2S solution at pH 7.0 through selective complexation. Optimal recoveries of Ag-NPs, AgCl-NPs, Ag2S-NPs, and dissolved Ag were 99.1 +/- 2.4%, 112.0 +/- 3.4%, 96.4 +/- 4.0%, and 112.2 +/- 4.1%, respectively. The method was validated to investigate the speciation of n-Ag in soils and sediments, exhibiting the distribution of Ag-NPs, AgCl-NPs, Ag2S-NPs, and dissolved Ag in each sample, wherein Ag2S-NPs, the major species of n-Ag, accounted for 35.42-68.87% of the total Ag. The results of n-Ag speciation in soil are comparable to those obtained through the linear combination fitting of XANES. This method thus is a powerful, yet convenient, substitute for XANES to understand the speciation of n-Ag in complex solid matrices. |
| WOS研究方向 | Chemistry, Analytical |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/45746]  |
| 专题 | 生态环境研究中心_环境化学与生态毒理学国家重点实验室 |
| 作者单位 | 1.Zhejiang Sci Tech Univ, Dept Chem, Hangzhou 310018, Peoples R China 2.Zhejiang Acad Agr Sci, Inst Agroprod Safety & Nutr, Hangzhou 310021, Peoples R China 3.Chinese Acad Sci, Inst Soil Sci, Key Lab Soil Environm & Pollut Remediat, Nanjing 210008, Peoples R China 4.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Chem & Ecotoxicol, Beijing 100085, Peoples R China 5.Univ Chinese Acad Sci, Sch Environm, Hangzhou Inst Adv Study, Hangzhou 310024, Peoples R China 6.Zhejiang Univ, Dept Environm Sci, Hangzhou 310058, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hong, Aimei,Tang, Qing,Khan, Ashfeen Ubaid,et al. Identification and Speciation of Nanoscale Silver in Complex Solid Matrices by Sequential Extraction Coupled with Inductively Coupled Plasma Optical Emission Spectrometry[J]. ANALYTICAL CHEMISTRY,2021,93(4):1962-1968. |
| APA | Hong, Aimei.,Tang, Qing.,Khan, Ashfeen Ubaid.,Miao, Maozhong.,Xu, Zhenlan.,...&Li, Lingxiangyu.(2021).Identification and Speciation of Nanoscale Silver in Complex Solid Matrices by Sequential Extraction Coupled with Inductively Coupled Plasma Optical Emission Spectrometry.ANALYTICAL CHEMISTRY,93(4),1962-1968. |
| MLA | Hong, Aimei,et al."Identification and Speciation of Nanoscale Silver in Complex Solid Matrices by Sequential Extraction Coupled with Inductively Coupled Plasma Optical Emission Spectrometry".ANALYTICAL CHEMISTRY 93.4(2021):1962-1968. |
入库方式： OAI收割
来源：生态环境研究中心
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。