An improved method for the determination of aryl-4-hydroxylase activity
β Scribed by William J. Lindblad; Eugene Jackim
- Publisher
- John Wiley and Sons
- Year
- 1981
- Tongue
- English
- Weight
- 206 KB
- Volume
- 1
- Category
- Article
- ISSN
- 0260-437X
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β¦ Synopsis
Abstract
An improved method for separation of tritiated benzo[a]pyrene from tritiated water in the arylβ4βhydroxylase assay is presented. Quantitative retention of benzo[a]pyrene was obtained with mixed cellulose acetate and nitrate filters. Enzymatic activities obtained with this modification agreed well with those determined using the standard charcoal column extraction. This modification greatly reduces the time required to perform this assay, and allows for the determination of enzyme activity in a large number of samples.
π SIMILAR VOLUMES
The assay of deuterium in organic compounds has heretofore been based on combustion followed by reduction of the resultant D,O to deuterium, which is then measured in the mass spectrometer. Certain limitations in methods (1, 2) employing the combustion principle have led to consideration of another