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@inproceedings{483090,
author = {Machát, Jiří and Otruba, Vítězslav and Kanický, Viktor},
address = {Scottsdale (Arizona)},
booktitle = {2002 Winter Conference on Plasma Spectrochemistry},
keywords = {matrix interference; spectral interference; selenium; ICP-OES; signal enhancement},
language = {eng},
location = {Scottsdale (Arizona)},
pages = {224-225},
publisher = {URIAC},
title = {Matrix interferences in determination of selenium by inductively coupled plasma - atomic emission spectrometry},
year = {2002}
}
TY - JOUR
ID - 483090
AU - Machát, Jiří - Otruba, Vítězslav - Kanický, Viktor
PY - 2002
TI - Matrix interferences in determination of selenium by inductively coupled plasma - atomic emission spectrometry
PB - URIAC
CY - Scottsdale (Arizona)
KW - matrix interference
KW - spectral interference
KW - selenium
KW - ICP-OES
KW - signal enhancement
N2 - Spectral and non-spectral interferences observed at the determination of selenium by ICP-OES were investigated in this study. The identity of the carbon-induced emission peak that interferes on the Se 196.090 nm analytical line has been revised. It has been found that this peak is not a part of a CN band but it belongs most likely to a spectral band emitted by CO molecule. Non-spectral interferences of matrix elements C, S, P and Br consisting in the enhancement of selenium emission have been found. Concentration dependences of these matrix effects were measured in the range of 0.5 - 20 g.l-1 of matrix element and 0.1 - 100 mg.l-1 of Se. The enhancement of selenium emission was about 50% in the most significant case (sulfur 10 g.L-1). Similar effect was observed when gaseous compounds of C and S were introduced into the ICP. Mechanism of this matrix effect was studied and partially clarified as probably related to ionization of matrix elements.
ER -
MACHÁT, Jiří, Vítězslav OTRUBA a Viktor KANICKÝ. Matrix interferences in determination of selenium by inductively coupled plasma - atomic emission spectrometry. In \textit{2002 Winter Conference on Plasma Spectrochemistry}. Scottsdale (Arizona): URIAC, 2002, s.~224-225.
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