Reference

Complex compounds of catechol violet with aluminum and aminoglycoside antibiotics

Complex compounds of catechol violet with aluminum and aminoglycoside antibiotics. Alykov, N. M. (Astrakhan Pedagog. Inst., Astrakhan, USSR). Zh. Anal. Khim., 39(8), 1425-7 (Russian) 1984. CODEN: ZAKHA8. ISSN: 0044-4502. DOCUMENT TYPE: Journal CA Section: 63 (Pharmaceuticals) Section cross-reference(s): 1, 17 The complexation of aminoglycoside antibiotics monomycin [7542-37-2], kanamycin [59-01-8], streptomycin [57-92-1], and gentamicin [13291-74-2] with Al and catechol violet (CV) [115-41-3] was studied in 1:1 EtOH-H2O. The 3-component ratios of Al-CV-antibiotic at pH 3 were 1:1:3 for monomycin and kanamycin and 1:1:4 for streptomycin and gentamicin. The complexation of CV with Al and aminoglycosides was selective, since this behavior was not interfered with 10,000-fold amt. of tetracyclins, penicillins, amino acids, novocaine, nitrates, sulfates, and acetates of K, Na, Ca, Mg, and ammonium. The interfering effect of Fe(III) was eliminated by ascorbic acid, whereas oxalates, phosphates, and fluorides interfered. The aminoglycoside antibiotics may be sepd. on chromatog. plates or on paper, dried at 70-80°, treated with CV and AlCl3 in acetate buffer (pH 3) and EtOH, and then the antibiotics can be identified. A photometric method (665 nm) is also described for detg. these antibiotics in blood and milk (0.02-50 mg).

Determination of aluminum in plant tissue digests using a catechol violet colorimetric method

Determination of aluminum in plant tissue digests using a catechol violet colorimetric method. Wilson, D. O. (Dep. Agron., Univ. Georgia, Experiment, GA 30212, USA). Commun. Soil Sci. Plant Anal., 15(10), 1269-79 (English) 1984. CODEN: CSOSA2. ISSN: 0010-3624. DOCUMENT TYPE: Journal CA Section: 4 (Toxicology) A method for detg. Al in acid digested plant tissues with catechol violet [115-41-3] and spectrometric anal. at 585 nm was described and, when applied to orchard leaves and citrus leaves, 99.1 and 97.1%, resp., of added Al was recovered. Except for P, which should be present at concns. generally found in plant digests, other components used in ref. stds. for the detn. and normally found in plant tissues may vary over a broad range.