Interference in GLC determination of iodoamino acids in hydrolysis products of thyroid extracts
β Scribed by R. Bilous; E. Koehler; J. J. Windheuser
- Publisher
- John Wiley and Sons
- Year
- 1971
- Tongue
- English
- Weight
- 183 KB
- Volume
- 60
- Category
- Article
- ISSN
- 0022-3549
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π SIMILAR VOLUMES
nil because I is not as strong a base as I1 since only the latter contains a primary amino group. There was no interference from the antioxidant, sodium bisulfite (0.273, and the preservatives, methylparaben (0.02x) and propylparaben (0.OlX). The best pH range for the extraction of the phenylpropano
A GLC procedure for the determination of meperidinic and normeperidinic acids in human urine is described. After the extraction of any interfering meperidine or normeperidine, the urine samples are dried and the acids are reesterified using ethanol-sulfuric acid. The resulting meperidine and normepe