A sensitive colorimetric method of analysis for seven compounds of the tetracycline series was developed, based on the formation of a colored complex between the tetracyclines and quadrivalent thorium. Theeffectsof pH and time upon thestability of the complexes were observed. The method was applied
dc Polarographic assay of tetracyclines
β Scribed by L. G. Chatten; R. E. Moskalyk; R. A. Locock; K-S. Huang
- Publisher
- John Wiley and Sons
- Year
- 1976
- Tongue
- English
- Weight
- 602 KB
- Volume
- 65
- Category
- Article
- ISSN
- 0022-3549
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π SIMILAR VOLUMES
0 Chloroguanide hydrochloride, an antimalarial drug, shows one well-defined DC polarographic wave in Britton-Robinson buffered media. In the pH range 3-9 the observed reduction wave is related to the reduction of the two azomethine centers on the monoprotonated biguanide group (BH+). The effects of
sium(111) in an aqueous solution of 0.1 M N(CH )qC104 has been made. very negative potentials where the reduction o j Dy(II1) takes place, there are several difficulties in the polarographic experiments. Multiple waves are observed, which are associated with the presence of different hydroxycomplexe