Solution-based calibration strategy for laser ablation-inductively coupled plasma-mass spectrometry using desolvating nebulizer system

被引:5
作者
Zhang, Guoxia [1 ]
Li, Qing [1 ]
Zhu, Yan [1 ]
Wang, Zheng [1 ]
机构
[1] Chinese Acad Sci, Shanghai Inst Ceram, Shanghai 200050, Peoples R China
关键词
LA-ICP-MS; Solution-based; Desolvating nebulizer system; LA-ICP-MS; ZIRCON U-PB; TRACE-ELEMENTS; QUANTITATIVE-ANALYSIS; AQUEOUS STANDARDS; ISOTOPE ANALYSIS; SAMPLES; METALS; QUANTIFICATION; ADDITIONS;
D O I
10.1016/j.sab.2018.04.004
中图分类号
O433 [光谱学];
学科分类号
0703 ; 070302 ;
摘要
An additional quantification strategy using a desolvating nebulizer system (DNS) for solution-based calibration was developed. For quantitative analysis, laser ablation (LA) and DNS-generated aerosols were coupled using a "Y" connector and introduced into the inductively coupled plasma (ICP). These aerosols were also observed by scanning electron microscopy following collection on a silicon chip. Internal standards (Ag-108, Cu-64, Y-89) were used to correct for the different aerosol transport efficiencies between the DNS and LA. The correlation coefficients of the calibration curves for all elements ranged from 0.9986 to 0.9999 Standard reference materials (NIST 610-616 and GBW08407-08411) were used to demonstrate the accuracy and precision of the method. The results were in good agreement with certified values, and the relative standard deviation (RSD) of most elements was <3%. The limits of detection (LODs) for Cr-50, Mn-55, Co-59, Ni-60, Zn-66, Y-89,Cd-110, La-139, Ce-140, Nd-146, Sm-147, Gd-157, Dy-163, Er-166, and Pb-208 were 23,3,3,19,31,4,12,0.4,0.9,0.1,0.2,2, 0.3,0.4, and 21 ng/g, respectively, which were significantly better than those obtained by other methods. Further, this approach was applied for the analysis of multiple elements in biological tissues, and the results were in good agreement with those obtained using solution-based inductively coupled plasma-mass spectrometry (ICP-MS). (C) 2018 Elsevier B.V. All rights reserved.
引用
收藏
页码:51 / 57
页数:7
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