COMPARISON OF REFLUX AND MICROWAVE-OVEN DIGESTION FOR THE DETERMINATION OF ARSENIC AND SELENIUM IN SLUDGE REFERENCE MATERIAL USING FLOW-INJECTION HYDRIDE GENERATION AND ATOMIC-ABSORPTION SPECTROMETRY

Authors
SARASWATI R VETTER TW WATTERS RL
Citation
R. Saraswati et al., COMPARISON OF REFLUX AND MICROWAVE-OVEN DIGESTION FOR THE DETERMINATION OF ARSENIC AND SELENIUM IN SLUDGE REFERENCE MATERIAL USING FLOW-INJECTION HYDRIDE GENERATION AND ATOMIC-ABSORPTION SPECTROMETRY, Analyst, 120(1), 1995, pp. 95-99
Citations number
25
Categorie Soggetti
Chemistry Analytical
Journal title
Analyst → ACNP
ISSN journal
00032654
Volume
120
Issue
1
Year of publication
1995
Pages
95 - 99
Database
ISI
SICI code
0003-2654(1995)120:1<95:CORAMD>2.0.ZU;2-N
Abstract
A microwave oven digestion procedure was developed for rapid dissoluti on of sludge samples (NIST SRM 2781) for the determination of As and S e. Microwave oven digestion with HNO3 and H2SO4 provides results compa rable to those obtained by reflux column digestion using HNO3, H2SO4 a nd HClO4. The experimental details for sample preparation and the flow injection hydride generation atomic absorption spectrometric method a re discussed, The effects of matrix and various acid concentrations on the extraction and absorbance were also studied, The proposed method has detection limits of 0.15 and 0.17 ng ml(-1) for As and Sc, respect ively.