MECHANISM OF VAPORIZATION OF SULFUR IN ELECTROTHERMAL VAPORIZATION INDUCTIVELY-COUPLED PLASMA-MASS SPECTROMETRY

被引：20

作者：

GREGOIRE, DC ^{[1
]}

NAKA, H ^{[1
]}

机构：

[1] SUMITOMO MET IND LTD,AMAGASAKI,HYOGO 660,JAPAN

来源：

JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY | 1995年 / 10卷 / 10期

关键词：

SULFUR; ELECTROTHERMAL VAPORIZATION; INDUCTIVELY COUPLED PLASMA; MASS SPECTROMETRY; CHEMICAL MODIFIER; CARRIER;

D O I：

10.1039/ja9951000823

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The mechanism is reported of the vaporization of sulfur using electrothermal vaporization inductively coupled plasma mass spectrometry (ETV-ICP-MS). Studied were the vaporization characteristics of sulfuric acid, thiourea, potassium sulfate, ferric sulfate and magnesium sulfate. All compounds with the exception of potassium sulfate released sulfur as SO, gas resulting from thermal decomposition of sample. Potassium sulfate vaporized without decomposition. The use of KCI, KNO3 and KOH as chemical modifiers was studied, with KOH being the most beneficial for the ETV-ICP-MS determination of sulfur. The absolute limit of detection for sulfur was 13 pg which corresponds to a relative limit of detection of 0.26 ng ml(-1) using a 50 mu l sample.

引用

页码：823 / 828

页数：6

共 27 条

[1]

ATTARD MPB, 1986, J THERM ANAL, V31, P408

[2] INDUCTIVELY COUPLED PLASMA-MASS SPECTROMETRY FOR ELEMENTAL ANALYSIS AND ISOTOPE RATIO DETERMINATIONS IN INDIVIDUAL ORGANIC-COMPOUNDS SEPARATED BY GAS-CHROMATOGRAPHY [J].