PEAK PROFILE CHARACTERISTICS AND ATOMIZATION MECHANISMS FOR SELENIUM IN THE PRESENCE OF MERCURY FOR GRAPHITE-FURNACE ATOMIC-ABSORPTION SPECTROMETRY

被引：8

作者：

GARCIAOLALLA, C ^{[1
]}

ALLER, AJ ^{[1
]}

机构：

[1] UNIV LEON,DEPT BIOCHEM & MOLEC BIOL,E-24071 LEON,SPAIN

来源：

FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY | 1992年 / 342卷 / 1-2期

关键词：

D O I：

10.1007/BF00321694

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Time resolved absorbance profiles, as well as the effects of inorganic acids and mercury salts, have been studied for selenium graphite furnace atomic absorbance signals. Conventional furnace operating procedures and wall atomization were used. Absorbance profiles were found to be sensitive to the mass of the counter ion and mercury present. Negative shifts in the appearance temperature were noted for low levels of mercury salts, whilst the higher levels of mercury caused only slight increasing shifts in the appearance temperature. Peak-area absorbance increases with mercury mass, but a steady-state absorbance was reached above a certain mercury chloride concentration. If mercury is present, a thermal dissociation of a mercury selenium compound is the suggested Se atomization mechanism.

引用

页码：70 / 75

页数：6

共 36 条

[1] DETERMINATION OF ARSENIC, CADMIUM, LEAD, ANTIMONY, SELENIUM AND THALLIUM IN COAL FLY-ASH USING THE STABILIZED TEMPERATURE PLATFORM FURNACE AND ZEEMAN-EFFECT BACKGROUND CORRECTION [J].

BETTINELLI, M ;

BARONI, U ;

PASTORELLI, N .

JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY, 1988, 3 (07) :1005-1011

[2] A THERMODYNAMIC-EQUILIBRIUM MODEL FOR ATOMIZATION IN GRAPHITE-FURNACE ATOMIC-ABSORPTION SPECTROMETRY [J].

BYRNE, JP ;

CHAKRABARTI, CL ;

CHANG, SB ;

TAN, CK ;

DELGADO, AH .

FRESENIUS ZEITSCHRIFT FUR ANALYTISCHE CHEMIE, 1986, 324 (05) :448-455

[3] ATOM-FORMATION PROCESSES IN CARBON-FURNACE ATOMIZERS USED IN ATOMIC-ABSORPTION SPECTROMETRY [J].

CAMPBELL, WC ;

OTTAWAY, JM .

TALANTA, 1974, 21 (08) :837-844

[4] DETERMINATION OF SELENIUM IN BIOLOGICAL-MATERIALS WITH PLATFORM FURNACE ATOMIC-ABSORPTION SPECTROSCOPY AND ZEEMAN BACKGROUND CORRECTION [J].

CARNRICK, GR ;

MANNING, DC ;

SLAVIN, W .

ANALYST, 1983, 108 (1292) :1297-1312

[5] INVESTIGATION OF REACTIONS INVOLVED IN GRAPHITE-FURNACE ATOMIC-ABSORPTION PROCEDURES .12. A STUDY OF SOME FACTORS INFLUENCING THE DETERMINATION OF SELENIUM [J].

CEDERGREN, A ;

LINDBERG, I ;

LUNDBERG, E ;

BAXTER, DC ;

FRECH, W .

ANALYTICA CHIMICA ACTA, 1986, 180 :373-388

[6] ATOMIZATION MECHANISM WITH ARRHENIUS PLOTS TAKING THE DISSIPATION FUNCTION INTO ACCOUNT IN GRAPHITE-FURNACE ATOMIC-ABSORPTION SPECTROMETRY [J].

CHUNG, CH .

ANALYTICAL CHEMISTRY, 1984, 56 (14) :2714-2720

[7]

DOIDGE PS, 1989, J ANAL ATOM SPECTROM, V4, P251, DOI 10.1039/ja9890400251

[8] MASS-SPECTRAL AND ATOMIC-ABSORPTION STUDIES OF SELENIUM VAPORIZATION FROM A GRAPHITE SURFACE [J].

DROESSLER, MS ;

HOLCOMBE, JA .

SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY, 1987, 42 (08) :981-994

[9]

DULUDE GR, 1989, SPECTROSCOPY, V4, P44

[10]

ESSER P, 1987, FRESEN Z ANAL CHEM, V328, P359

← 1 2 3 4 →