CHARACTERIZATION OF A HELIUM-ARGON MIXED-GAS PLASMA FOR THE DETECTION OF IODINE BY INDUCTIVELY COUPLED PLASMA OPTICAL-EMISSION SPECTROSCOPY

被引：15

作者：

SHEPPARD, BS

CARUSO, JA

WOLNIK, KA

FRICKE, FL

机构：

[1] UNIV CINCINNATI,DEPT CHEM,CINCINNATI,OH 45221

[2] US FDA,CTR ELEMENTAL ANAL RES,CINCINNATI,OH 45202

来源：

APPLIED SPECTROSCOPY | 1990年 / 44卷 / 04期

关键词：

D O I：

10.1366/0003702904087299

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A He/Ar mixed-gas plasma has been investigated as an optical emission source for the determination of iodine at 2063 Angstroms. The effects of adding varying amounts of He to an argon plasma were studied. Optimal conditions were found with a total plasma composition of 34% helium. The auxiliary gas was 100% argon, whereas the carrier gas and the coolant gas were composed of 88% and 35% He, respectively. The mixed-gas plasma reduced the detection limit for iodine to 0.4 ppm, a sevenfold improvement over the detection limit obtained with a 100% Ar plasma. At the optimum conditions for iodine, detection limits for most other elements studied improved or stayed the same.

引用

页码：712 / 715

页数：4

共 13 条

[1] COMPARISON OF TEMPERATURE-MEASUREMENTS IN ICP AND MIP WITH AR AND HE AS PLASMA GAS [J].