Optimization of Thermogravimetric Analysis of Ash Content in Honey
نویسندگان
چکیده
Um planejamento fatorial foi aplicado para avaliar o conteúdo de cinzas em mel pela termogravimetria bem como para estabelecer as condições de análise ótimas que produzem conteúdos de cinzas em concordância com aqueles obtidos pelo método oficial (gravimetria). Os efeitos de taxa de aquecimento e papel de fibra de vidro foram significativos bem como o efeito de interação entre estas variáveis. Taxas de aquecimento e o emprego do papel de fibra de vidro são recomendados para obter a incineração completa de mel pela termogravimetria. Para confirmar estes resultados e estabelecer as condições otimizadas foi executado um planejamento completamente aleatorizado em blocos investigando três procedimentos: termogravimetria com papel de fibra de vidro a 5 e 10 oC min e gravimetria. Somente o método termogravimétrico realizada à 5 oC min apresentou conteúdos médios de cinzas em concordância com aqueles obtidos pelo método oficial. Assim, a TG/DTG pode ser indicada como um método alternativo à gravimetria para esta determinação em mel.
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