نتایج جستجو برای: dispersive liquid liquid microextraction

تعداد نتایج: 235940  

A very simple, rapid and sensitive dispersive liquid-liquid microextraction (DLLME) followed by gas chromatography and flame ionization detection (GC-FID) was developed for the determination of phenol and carvacrol in honey samples. A mixture of 100 µl dichloromethane (extraction solvent) and 0.5 ml acetonitrile (disperser solvent) was rapidly injected into sample solution. Thereby a cloudy sol...

Dispersive Liquid-Liquid Microextraction / Thermal Lens Microscopy (DLLME/TLM) was developed as a new combination method for preconcentration and determination of Cd. Thermal Lens Microscopy is suitable for the determination of analyte after DLLME because of the low volume of the remained phase after DLLME and increasing of the enhancement factor for the nonpolar organic solvents. Some effe...

Mansoor Khordegir, Morteza Ziyaadini,

Abstract Reverse phase dispersive liquid- liquid microextraction (RP- DLLME) coupled with spectrophotometry is introduced for the detection of total phenol in the muscle tissue of fishes, such as Sphyraena genie, Otolithes ruber, Rastrelliger kangurta, Lutjanus johnii and Barbus Subquin Cunciatus. Phenols in fish tissues were extracted by ultrasonic bath and derivatization with 4- aminoant...

Journal: :international journal of environmental research 2014
h. sereshti n. eskandarpour s. samadi gh. aliakbarzadeh

the task specific ionic liquid (tsil), tricaprylmethylammonium thiosalicylate ([a336][ts]),was synthesized, characterized and subsequently used as extraction solvent in dispersive liquid-liquidmicroextraction (dllme) technique. the tsil-dllme method followed by inductively coupled plasmaatomicemission spectrometry (icp-aes) was applied to determination of trace mercury (hg) and cadmium(cd) in a...

Journal: :مهندسی بیوسیستم ایران 0
مهدی فرهودی دانشجوی دکتری، پردیس کشاورزی و منابع طبیعی دانشگاه تهران زهرا امام جمعه استاد، پردیس کشاورزی و منابع طبیعی دانشگاه تهران محمدرضا احسانی استاد، پردیس کشاورزی و منابع طبیعی دانشگاه تهران عبدالرسول ارومیه ای دانشیار پژوهشکدۀ پلیمر و پتروشیمی ایران

absorption of flavor compounds from food into the package is one of the interactions which occurbetween food and packaging material. this phenomenon is of high importance, because absorptionof flavors into the packaging material could diminish the flavor intensity of the product as well asloss of mechanical/border properties of the packaging material, so the final loss of quality in thefood pro...

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