Determination and correction of analytical biases and study on chemical mechanisms in the analysis of Cr(VI) in soil samples using EPA protocols
Article Abstract:
An alternative to the EPA Method 7196A was utilized to measure Cr(VI) in environmental soil samples in EPA RCRA SW-486 Update III. Instead of 7196A and EPA Method 3060A, which concern alkaline extraction and colorimetric measurement, respectively, the newly-developed Speciated Isotope Dilution Mass Spectrometry (SIDMS) was utilized to detection and correction of analytical biases in the EPA protocols. Among the biases detected with Method 7196A were the possible oxidation of soluble Cr(III) to Cr(VI); lower recoveries of Cr(VI) in sand and soil samples; and the possible generation of negative errors due to Fe3+. SIDMS can eliminate the biases related to neutralization and detection with Method 7196A when used as a detection method with the alkaline extraction of Cr(VI).
Comment:
SIDMS is used as an alternative in measruing Cr(VI) in environmental soil samples to detect & correct biases w/ EPA Method 7196A
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1998
User Contributions:
Comment about this article or add new information about this topic:
A comparative analysis of environmental risk assessment/risk management frameworks
Article Abstract:
Risk assessment/risk management policies have been developed to address the present environmental impacts. Seven representative frameworks were evaluated for common themes, approach variations and conceptual innovations. The development of risk assessment suggests placing more emphasis on risk management to be able to achieve greater stake involvement and deemphasis on quantitative characterization of risk and uncertainty, as well as to fulfill the development of iterative decisions. Successive policies provide analytical innovations brought about by the social participation of risk assessment/risk management analyses.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1998
User Contributions:
Comment about this article or add new information about this topic:
Environmental regulatory reform in Poland: lessons for industrializing economies
Article Abstract:
Researchers from Clark University, MA, investigated how Poland developed environmental regulatory reforms made in Poland during the 1990s to manage industrial pollution.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 2000
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: Formation of hydrogen peroxide and depletion of oxalic acid in atmospheric water by photolysis of iron(III)-oxalato complexes
- Abstracts: Glutathione conjugation and contaminant transformation. Identification of a new sulfonic acid metabolite of metolachlor in soil
- Abstracts: Innovation index and its implications on organizational performance: a study of Australian manufacturing companies
- Abstracts: How innovation is changing R&D. The role of knowledge and organization in the competitiveness of Japanese high-tech industry
- Abstracts: Towards a theoretical and methodological corporate technology management framework: the strategic perspective