نتایج جستجو برای: ultrasonic assisted microextraction
تعداد نتایج: 159984 فیلتر نتایج به سال:
To investigate the drying characteristics and mechanism during electrohydrodynamic (EHD) with ultrasonic pretreatment, pretreatment-assisted EHD method at different power values was used to carry out experiment of potatoes. this study, potato slices were pretreated (150, 180, 210, 240, 270 W) or without ultrasound for 30 min 30°C. The corresponding voltage 18 kV drying. moisture ratio, rate, co...
the history of plant’s used for mankind is as old as the start of humankind. initially, people used plants for their nutritional proposes but after the discovery of medicinal properties, this natural ?ora became a useful source of disease cure and health improvement across various human communities. berberis vulgaris is one of the medicinal plants used in iranian traditional medicine. berberis ...
A simple, accurate and fast vortex-assisted dispersive liquid-liquid microextraction procedure has been developed for the extractive spectrophotometric determination of niflumic acid in biological samples. The method is based on the formation of an ion association complex between niflumic acid and methylene blue. The resulting ion-pair was extracted into dichloromethane and its absorbance was m...
Arapid, highly sensitive and efficient flotation/magnetic stirring-assisted liquid-liquid microextraction combined with flame atomic absorption spectrometry has been proposed for the preconcentration and quantitative analysis of trace amounts of cadmium (II) in the presence of sodium diethyldithiocarbamateas complexingagent. Parameters including sample pH, concentration of the complexingagent, ...
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