Determination of polysulfide anions and molecular sulfur via coupling HPLC with ICP-MS†

IF 3.1 2区 化学 Q2 CHEMISTRY, ANALYTICAL
Aleksei Sadykov, Yannick P. Stenzel, Martin Winter, Simon Wiemers-Meyer and Sascha Nowak
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引用次数: 0

Abstract

A novel method for the speciation and quantification of polysulfide anions and molecular sulfur in lithium polysulfide solutions in organic solvents is reported. The technique is based on hyphenation of high-performance liquid chromatography (HPLC) and inductively coupled plasma mass spectrometry (ICP-MS). A sector-field mass-spectrometer was utilized which made it possible to quantify various sulfur compounds without the need for single component standards and conduct the direct detection of the main isotope of sulfur regardless of interferents such as highly abundant 16O2. Key aspects of separation and sample preparation were considered which allowed complete separation of derivatized polysulfide anions. Gradual adjustment of essential parameters and hardware is described. Variation of plasma settings allowed for obtaining chromatograms with desired analyte peak shapes. The optimized method was applied for the quantification of various lithium polysulfide mixtures in organic solvents showing the accessibility of the corresponding polysulfide distributions with this technique.

Abstract Image

Abstract Image

通过 HPLC 与 ICP-MS 联用测定多硫阴离子和分子硫
报告中介绍了一种新方法,用于对有机溶剂中多硫化锂溶液中的多硫阴离子和分子硫进行标示和定量。该技术基于高效液相色谱法(HPLC)和电感耦合等离子体质谱法(ICP-MS)的联用。利用扇形场质谱仪,无需单组分标准即可对各种硫化合物进行定量,并可直接检测硫的主要同位素,而不受高浓度 16O2 等干扰物的影响。对分离和样品制备的关键环节进行了考虑,使衍生化多硫阴离子得以完全分离。对基本参数和硬件的逐步调整进行了说明。通过改变等离子体的设置,可获得具有理想分析峰形的色谱图。优化后的方法被应用于有机溶剂中各种多硫化锂混合物的定量分析,结果表明该技术可用于相应的多硫化物分布。
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来源期刊
CiteScore
6.20
自引率
26.50%
发文量
228
审稿时长
1.7 months
期刊介绍: Innovative research on the fundamental theory and application of spectrometric techniques.
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