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Elemental Fractionation Studies of Biological Samples Using Laser Ablation Inductively Coupled Plasma Mass Spectrometry
Li Qing1; Zhang Guo-Xia; Chen Yi-Rui; Wang Zheng; Ding Chuan-Xian
2017
发表期刊CHINESE JOURNAL OF ANALYTICAL CHEMISTRY
ISSN0253-3820
卷号45期号:6页码:868
摘要The ablated aerosols of biological matrix sample were studied using 213 nm nanosecond laser ablation system. The stable signal intensity and high sensitivity were obtained when the laser energy was 25%, the spot size was 200 mu m, the scan rate was 20 mu m/s, the frequency was 20 Hz and the carrier gas was 700 mL He + 700 mL Ar. Relative fractionation index of 56 elements were investigated and 31P as the internal standard element was selected under the optimized laser ablation conditions. The results showed that particle size of the biological sample was 3 mu m, which was larger compared with NIST 610 sample. Element fractionation in biological sample was smaller than in glass sample, and relative fractionation index of most elements attained 1.0 +/- 0.1. Element fractionation mechanism of biological sample was discussed. The possible reason why the relative fractionation index in biological sample with large particle size did not significantly increase compared to the glass sample is that the 3 mu m particles entered into ICP can be atomized. On the other hand, enrichment effect for large ablation particles was relatively small. Further study of the influence factors of fractionation effect indicated that, the fractionation effect had relations with laser ablation energy, laser frequency and scan rate, negatively relation with the oxide boiling point, and positively relation with oxide bond energy and ionization energy.
DOI10.11895/j.issn.0253.3820.170052
WOS记录号WOS:000427854100009
EI入藏号1872-2040
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文献类型期刊论文
条目标识符http://ir.sic.ac.cn/handle/331005/26673
专题中国科学院上海硅酸盐研究所
作者单位1.Chinese Acad Sci, Shanghai Inst Ceram, Shanghai 200050, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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Li Qing,Zhang Guo-Xia,Chen Yi-Rui,et al. Elemental Fractionation Studies of Biological Samples Using Laser Ablation Inductively Coupled Plasma Mass Spectrometry[J]. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY,2017,45(6):868.
APA Li Qing,Zhang Guo-Xia,Chen Yi-Rui,Wang Zheng,&Ding Chuan-Xian.(2017).Elemental Fractionation Studies of Biological Samples Using Laser Ablation Inductively Coupled Plasma Mass Spectrometry.CHINESE JOURNAL OF ANALYTICAL CHEMISTRY,45(6),868.
MLA Li Qing,et al."Elemental Fractionation Studies of Biological Samples Using Laser Ablation Inductively Coupled Plasma Mass Spectrometry".CHINESE JOURNAL OF ANALYTICAL CHEMISTRY 45.6(2017):868.
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