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Xylenol Orange-Functionalized Halloysite Nanotubes as a Novel Adsorbent for Selective Solid-phase Extraction and Determination of Trace Noble Elements
Bao, Amin1,2,3; Zheng, Hong1,2,4; Liu, Zeyu1,2,3; Huang, Dongfang1,2,3; Li, Bo1,2; Wang, Shuya1,2
2017-08-01
Source PublicationJOURNAL OF THE CHINESE CHEMICAL SOCIETY
Volume64Issue:8Pages:953-961
SubtypeArticle
AbstractA novel method using xylenol orange-modified halloysite nanotubes as a solid-phase sorbent has been developed for the simultaneous preconcentration and separation of trace Au(III) and Pd(II) prior to their determination by inductively coupled plasma-atomic emission spectrometry (ICP-AES). The experimental effects of pH, the amount of adsorbent, sample flow rate, sample volume, interfering ions, and the elution condition were investigated in detail. Au(III) and Pd(II) were retained on the column at pH 3, and eluted with 2.0 mL of 1.0 mol/L HCl + 2% CS(NH2)(2) solution. Common interfering ions did not have any impact on the adsorption, separation, and determination. An enrichment factor of 150 was obtained. The maximum adsorption capacities of the adsorbent were 41.63 and 47.82 mg/g for Au(III) and Pd(II), respectively, under the optimum conditions. By the definition of IUPAC, the detection limits (3 sigma) of this method for Au(III) and Pd(II) were 0.31 and 0.27 ng/mL, and the relative standard deviations (RSDs) were 2.7 and 3.2%, respectively (n = 8). This newly developed method was verified by certified reference materials, and has been successfully applied to the determination of trace Au(III) and Pd(II) in mine samples with satisfactory results. It can be confidently predicted that the method can be used for the determination trace Au(III) and Pd(II) in other real samples because of its high selectivity, sensitivity, and reproducibility.
KeywordXylenol Orange-modified Halloysite Nanotubes Solid-phase Extraction Trace Noble Elements Inductively Coupled Plasma-atomic Emission Spectrometry
WOS HeadingsScience & Technology ; Physical Sciences
WOS KeywordATOMIC-ABSORPTION-SPECTROMETRY ; HEAVY-METAL IONS ; ENVIRONMENTAL-SAMPLES ; AMBERLITE XAD-2 ; PRECONCENTRATION ; WATER ; LEAD ; ADSORPTION ; RESINS
Indexed BySCI
Language英语
WOS Research AreaChemistry
WOS SubjectChemistry, Multidisciplinary
WOS IDWOS:000408932400008
Citation statistics
Document Type期刊论文
Identifierhttp://ir.isl.ac.cn/handle/363002/6247
Collection青海盐湖研究所知识仓储
盐湖资源综合利用工程技术中心
Affiliation1.Chinese Acad Sci, Qinghai Inst Salt Lakes, Key Lab Comprehens & Highly Efficient Utilizat Sa, Xining 810008, Qinghai, Peoples R China
2.Chinese Acad Sci, Qinghai Inst Salt Lakes, Qinghai Engn & Technol Res Ctr Comprehens Utiliza, Xining 810008, Qinghai, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Chongqing Normal Univ, Chongqing 401331, Peoples R China
Recommended Citation
GB/T 7714
Bao, Amin,Zheng, Hong,Liu, Zeyu,et al. Xylenol Orange-Functionalized Halloysite Nanotubes as a Novel Adsorbent for Selective Solid-phase Extraction and Determination of Trace Noble Elements[J]. JOURNAL OF THE CHINESE CHEMICAL SOCIETY,2017,64(8):953-961.
APA Bao, Amin,Zheng, Hong,Liu, Zeyu,Huang, Dongfang,Li, Bo,&Wang, Shuya.(2017).Xylenol Orange-Functionalized Halloysite Nanotubes as a Novel Adsorbent for Selective Solid-phase Extraction and Determination of Trace Noble Elements.JOURNAL OF THE CHINESE CHEMICAL SOCIETY,64(8),953-961.
MLA Bao, Amin,et al."Xylenol Orange-Functionalized Halloysite Nanotubes as a Novel Adsorbent for Selective Solid-phase Extraction and Determination of Trace Noble Elements".JOURNAL OF THE CHINESE CHEMICAL SOCIETY 64.8(2017):953-961.
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