[X-ray diffractometry in the analysis of pharmaceutical products: phenomena of indomethacin polymorphism].
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Crystallography↗
Biomedical subjects
A Guerrato
Publications and source records attributed to A Guerrato.
Automatic potentiometric micro-determination of basic nitrogen in organic compounds.
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Chemical Phenomena↗
[Interference of alkali metals in the determination of sulfur in beta-lactam antibiotics and sulfonates].
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Anti-Bacterial Agents↗
Synthesis and antiinflammatory activity of 2,2'-diaminobiphenyl derivatives.
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Aminobiphenyl Compounds↗
Rapid pentachlorophenol evaluation in solid matrixes by second derivative UV spectroscopy for application to wood and leather samples.
A method for the quail-quantitative evaluation of pentachlorophenol (PCP) in solid matrixes has been developed. The procedure is based on solid-liquid extraction of solid samples (leather or wood), followed by purification on a cyanopropyl column and determination of the preservative by second derivative UV spectroscopy considering the PCP A peak-through value (304-297 nm). The method allows rapid PCP determination in the concentration range 1-40 micrograms/mL; any matrix interference is avoided by the purification step and recoveries of the preservative were 99.12% (RSD% 0.13) for the leather matrix and 98.03 (RSD% 0.17) for the wood matrix.
Microchemistry↗