Microwave Digestion Used in Soil Total Chromium Determination
- VernacularTitle:微波消解在土壤中总铬测定中的应用
- Author:
Yu ZOU
- Publication Type:Journal Article
- Keywords:
Soil;
Microwave digestion;
Chromium;
Spectrophotometry, atomic absorption
- From:
Journal of Environment and Health
1992;0(02):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To develop a pretreatment method with the microwave digestion for the determination of soil total chromium. Methods The nitric acid and hydrofluoric acid were added into the samples, the microwave digestion under the certain condition was conducted and then the sulfuric acid was added on the controllable electric stove. Flame atom absorption spectrophotometry or diphenylcarbohydrazide spectrophotometry was used to determine soil total chromium according to the condition. Results RSDs were from 1.20% to 11.08%. The Environmental Soil Standard test demonstrated that the results were in the guarantee value, as for ESS-1, RSD=2.57%, as for ESS-3, RSD=2.20%. Conclusion The microwave digestion is considered as a good pretreatment method for the determination of soil total chromium with the advantages of safe, rapid and accurate.
