نتایج جستجو برای: ultrasound assisted emulsification microextraction

تعداد نتایج: 239711  

A method based on the ultrasound-assisted solidification of floating drop microextraction technique was developed for the spectrophotometric and spectrofluorimetric determination of curcumin in turmeric powder. In this work a small volume of an organic solvent was floated on the surface of an aqueous solution. After sonication the organic solvent is solidified and separated. The effect of extra...

Journal: :Applied sciences 2021

Ultrasound (US) is a promising technology, which can be used to improve the efficacy of processes in food technology and quality final product. US technique used, e.g., support mass heat transfer processes, such as osmotic dehydration, drying freezing, well extraction, crystallization, emulsification, filtration, etc. Osmotic dehydration (OD) well-known process applied processing; however, impr...

A green and efficient ionic liquid-based ultrasound-assisted in-situ solvent formationmicroextraction (IL-UA-ISFME) in combination with high-performance liquid chromatographyultravioletdetection (HPLC-UV) has been successfully developed for the trace determination offive selected polycyclic aromatic hydrocarbons (PAHs) in environmental water samples. In thismethod, a hydrophobic ionic liquid (1...

Journal: :Journal of separation science 2013
Jiaheng Zhang Min Li Yubo Li Zongyang Li Fenfen Wang Qiu Li Wenfeng Zhou Runhua Lu Haixiang Gao

In this study, ionic liquid (IL) supported magnetic dispersive solid-phase microextraction was developed and a systematic investigation was conducted on imidazolium ILs for their extraction performance. This nano-based pretreatment procedure was then applied for the determination of acaricides in fruit juice samples for the first time. A feature of this technique is that the commonly laborious ...

Journal: :analytical and bioanalytical chemistry research 0
abbas afkhami faculty of chemistry, bu-ali sina university, hamedan, iran massoumeh pirdadeh-beiranvand faculty of chemistry, bu-ali sina university, hamedan, iran tayyebeh madrakian faculty of chemistry, bu-ali sina university, hamedan, iran

a method based on the ultrasound-assisted solidification of floating drop microextraction technique was developed for the spectrophotometric and spectrofluorimetric determination of curcumin in turmeric powder. in this work a small volume of an organic solvent was floated on the surface of an aqueous solution. after sonication the organic solvent is solidified and separated. the effect of extra...

2015
Masni Mat Yusoff Michael H. Gordon Keshavan Niranjan Yang Li

14 Regulatory, safety, and environmental issues have prompted the development of aqueous 15 enzymatic extraction (AEE) for extracting components from oil-bearing materials. The 16 emulsion resulting from AEE requires de-emulsification to separate the oil; when enzymes 17 are used for this purpose, the method is known as aqueous enzymatic emulsion de18 emulsification (AEED). In general, enzyme a...

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