СПЕКТРОФОТОМЕТРИЧНЕ ТА ВОЛЬТАМПЕРОМЕТРИЧНЕ ВИЗНАЧЕННЯ 4-[2-(3-МЕТИЛ-5-ОКСО-1-ФЕНІЛ-1,5-ДИГІДРО-4Н-ПІРАЗОЛ-4-ІЛІДЕН)-ГІДРАЗИНО]-БЕНЗЕНСУЛЬФОНАТУ НАТРІЮ
Анотація
Спектрофотометричним та вольтамперометричним методами проведено дослідження водних розчинів ПГБС. Форма спектрів практично не залежить від кислотності середовища, розраховано ефективні молярні коефіцієнти для максимумів світлопоглинання ε248 = (1,57±0,06)·104 та ε390 = (2,50±0,08)·104 л×моль-1×см-1. Процес відновлення ПГБС є необоротним, а природа полярографічного струму є адсорбційною. Запропоновано прості методи спектрофотометричного та полярографічного визначення ПГБС.
Ключові слова: вольтамперометрія, спектрофотометрія, азолідони, 4-[2-(3-метил-5-оксо-1-феніл-1,5-дигідро-4Н-піразол-4-іліден)-гідразино]-бензенсульфонат натрію.
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DOI: http://dx.doi.org/10.30970/vch.5901.216
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