DIGESTION OF DUST SAMPLES IN A MICROWAVE-OVEN

被引：7

作者：

FENG, Y

BARRATT, RS

机构：

[1] Engineering Mechanics, Faculty of Technology The Open University, Milton Keynes, MK7 6AA, Walton Hall

来源：

SCIENCE OF THE TOTAL ENVIRONMENT | 1994年 / 143卷 / 2-3期

关键词：

DUST; LEAD; CADMIUM; MICROWAVE OVEN; DIGESTION;

D O I：

10.1016/0048-9697(94)90453-7

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The use of a microwave oven for the rapid digestion of dust samples has been evaluated. Deposited dust collected for the study and reference samples representing municipal waste incineration ash, urban particulate matter and river sediments were the samples used in the study. The technique was compared with traditional methods after establishing optimal efficiency of digestion according to power setting, time and the use of different acids. Lead and cadmium content of the samples were determined by differential pulse anodic stripping voltammetry (DPASV) and atomic absorption spectrophotometry (AAS). A digestion procedure of 20-30 min for dust samples (0.1-1.0 g) allows recovery of Pb and Cd at over 80% with nitric acid or aqua regia and over 90% with a nitric/hydrofluoric acid mixture.

引用

页码：157 / 161

页数：5

共 13 条

[1] WET ASHING OF SOME BIOLOGICAL SAMPLES IN A MICROWAVE OVEN [J].