effectsofmethanoladditiononarsenicspeciationanalysiswithhplcicpms

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	effectsofmethanoladditiononarsenicspeciationanalysiswithhplcicpms
	Yang F(杨芬); Xie SW(谢邵文); Wei CY(韦朝阳); Liu JX(刘金鑫)
	2018
Source Publication	spectroscopyandspectralanalysis
ISSN	1000-0593
Volume	38 Issue:6 Pages:1884
Abstract	Arsenic (As) is a ubiquitous, toxic and carcinogenic element, and As compounds can pose significant health risks to human and animals. The toxicity of As depends on both the total concentrations and the chemical species as well. Therefore, much attention has been paid to As speciation analysis in the environmental and biological samples. Previous studies claimed that methanol-water solvent system is one of the most frequently utilized methods for extraction of arsenic in samples, and methanol can improve As sensitivity by ICP-MS. However, the effect of methanol addition on As speciation analysis is largely unknown. In this study, the potential As speciation changes in methanol-water solvent mixture covering the range of 0 similar to 100% were investigated. Moreover, an optimized condition was employed by using high-performance liquid chromatography inductively coupled plasma mass spectrometry (HPLC-ICP-MS) for simultaneous determination of six As species including AsC, AsB, As (III) DMA, MMA and As(V). In accordance with previous studies, the HPLC separation was performed on anion -exchange column using a mobile phase of 30 mmol . L-1 (NH4)(2)CO3 at pH= -9. 3. The ICP-MS on-line detection of As (AsaO(+) m/z=91) in eluting compounds was accomplished using the dynamic reaction cell (DRC) technology with oxygen as reaction gas. In addition, the method validation with optimized conditions indicated that the coefficients were above 0. 998 9 for all As species. The results indicate that the peak area measured in the chromatographic signal for As(III) and DMA increased significantly with the methanol contents, indicating significant impact of methanol contents on As speciation analysis. A test with comparison of 25% methanol solvent mixture, which showed the minimum effects on As speciation changes, and purified water, was further performed, and the results showed that As( LID and DMA concentration increased markedly compared to those diluted by purified water but little change for the other four As species. Thus, the elimination of methanol plays an important role in As speciation analysis.
Language	英语
Document Type	期刊论文
Identifier	http://ir.igsnrr.ac.cn/handle/311030/118804
Collection	中国科学院地理科学与资源研究所
Affiliation	中国科学院地理科学与资源研究所
First Author Affilication	中国科学院地理科学与资源研究所
Recommended Citation GB/T 7714	Yang F,Xie SW,Wei CY,et al. effectsofmethanoladditiononarsenicspeciationanalysiswithhplcicpms[J]. spectroscopyandspectralanalysis,2018,38(6):1884.
APA	杨芬,谢邵文,韦朝阳,&刘金鑫.(2018).effectsofmethanoladditiononarsenicspeciationanalysiswithhplcicpms.spectroscopyandspectralanalysis,38(6),1884.
MLA	杨芬,et al."effectsofmethanoladditiononarsenicspeciationanalysiswithhplcicpms".spectroscopyandspectralanalysis 38.6(2018):1884.

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