Use of organic solvents as additives in inductively coupled argon plasma with atomic emission spectrometric detection

被引：6
|
作者：
Korn, MDA [1 ]
de Oliveira, E
机构：
[1] Univ Fed Bahia, Inst Quim, BR-40170280 Salvador, BA, Brazil
[2] Univ Sao Paulo, Inst Quim, BR-05599970 Sao Paulo, Brazil
来源：
SPECTROSCOPY LETTERS | 1998年 / 31卷 / 04期
关键词：
inductively coupled plasma atomic emission spectrometry; additives; aqueous/organic medium; physical properties;
D O I：
10.1080/00387019808007392
中图分类号：
O433 [光谱学];
学科分类号：
0703 ; 070302 ;
摘要：
The effect of nitric acid/organic aerosols on the emission intensity of metals from the first row transition series, plus Cd and Pb was investigated. The addition of organic solvents to reference solutions diminished the aerosol mean drop size, by reducing the surface tension of the solutions. Correlation between signal intensity and BEC with the main physical characteristics (surface tension and viscosity) of the nitric acid/acetic acid and nitric acid/alcohol solutions was studied. Analytical curves (0-2.0 mu g ml(-1)) were evaluated using a matrix matching procedure, and detection limits indicated an improvement (ca 40%) in analytical performance as well as in linearity, sensitivity and precision.
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页码：699 / 715
页数：17
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