"Matrix interferences in determination of selenium by inductively coupled plasma - atomic emission spectrometry"@cs . . "URIAC" . "Matrix interferences in determination of selenium by inductively coupled plasma - atomic emission spectrometry" . . "3"^^ . "RIV/00216224:14310/02:00007163" . "2002 Winter Conference on Plasma Spectrochemistry" . . "Z(MSM 143100003)" . "Matrix interferences in determination of selenium by inductively coupled plasma - atomic emission spectrometry"@en . "Scottsdale (Arizona)" . "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."@cs . "Kanick\u00FD, Viktor" . "2002-01-01+01:00"^^ . . . . "14310" . "652640" . "Matrix interferences in determination of selenium by inductively coupled plasma - atomic emission spectrometry" . . . . "Matrix interferences in determination of selenium by inductively coupled plasma - atomic emission spectrometry"@cs . . "matrix interference; spectral interference; selenium; ICP-OES; signal enhancement"@en . "[A24E62D69E99]" . . "Mach\u00E1t, Ji\u0159\u00ED" . . "Otruba, V\u00EDt\u011Bzslav" . . "2"^^ . "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."@en . "RIV/00216224:14310/02:00007163!RIV08-MSM-14310___" . . "224" . . . "Matrix interferences in determination of selenium by inductively coupled plasma - atomic emission spectrometry"@en . "6.-12.1. 2002, Scottsdale, Arizona" . . "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." . . "3"^^ . . .