نتایج جستجو برای: dispersed solvent extraction pdse contractor

تعداد نتایج: 239707  

2012
Sayed Zia Mohammadi Yar Mohammad Baghelani Fatemeh Mansori Tayebeh Shamspur

In the proposed method, carbon tetrachloride and ethanol were used as extraction and dispersive solvents. Several factors that may be affected on the extraction process, such as extraction solvent, disperser solvent, the volume of extraction and disperser solvent, pH of the aqueous solution and extraction time were optimized. Under the optimal conditions, linearity was maintained between 1.0 ng...

Journal: :Phytochemical analysis : PCA 2002
Béatrice Kaufmann Philippe Christen

In the last 10 years there has been an increased interest in using techniques involving microwave-assisted extraction and pressurised solvent extraction in analytical laboratories. This review gives a brief overview of both methods, and reports on their application to the extraction of natural products. The influence of parameters such as the nature of the solvent and volume, temperature, time ...

2009
N N Rao Jai Ram Singh Rohit Misra

Phenol was extracted from sebacic acid wastewater (SAWW) using liquid-liquid extraction in batch as well as serial modes by applying different solvent: SAWW (1:250 5:250, v/v). Alcohols (1-hexanol, 1-heptanol, and 1-octanol), castor oil and Aliquat-336® were used for phenol extraction. In a typical extraction experiment involving shaking and allowing for phase separation, phenol (75-96%) can be...

2009
YuanQiao Rao Brian Antalek John Minter Thomas Mourey Thomas Blanton Gary Slater Lisa Slater Jill Fornalik

Anatase TiO2 nanoparticles with a mean diameter of approximately 10 nm were successfully synthesized by a nonaqueous sol-gel route without the use of air-free equipment. The nanoparticles are well dispersed in common organic solvents in the form of primary particles, and the colloid is stable for more than one year. The particles and colloid were studied by X-ray diffraction (XRD), transmission...

Abdi, Khosrou , Daneyali, Ali , Heidari, Mahmoud , Heravizadeh, Omid , Kamgou, Somayeh , Khadem, Monire , shahtaheri, Seyed Jamaloddin ,

Introduction: Todays, exposure to heavy metals is happened by being produced in various environmental, industrial processes. The production of metals finally results in air pollution as well as contamination in the food chain. There are harmful effects of heavy metals such as cadmium on different organs. Therefore, this study aimed to identify and quantify cadmium in biological samples using DL...

A simple and rapid solidified vortex assisted 1-undecanol based liquid-liquid microextraction technique was proposed for preconcentration of trace levels of lead ions. The extraction solvent (1-undecanol) was dispersed into the aqueous samples by the assistance of vortex agitator. 100 µL of 1-undecanol containing ethyl (2Z)-3-[(5-chloro-7-methyl[1,3]thiazolo[5,4-d]pyrimidi...

2007
Dragana Mutavdžić Pavlović Sandra Babić Alka J.M. Horvat Marija Kaštelan-Macan

Abbreviations: AIBN, 2,20-azo-bis-isobutyronitrile; ASE, Accelerated solvent extraction; CAR, Carboxen; DAD, Diode-array detector; DI-SPME, Direct-immersion solid-phase extraction; DSPE, Dispersive solid-phase extraction; EGDMA, Ethylene glycol dimethacrylate; ESE, Enhanced solvent extraction; ESI, Electrospray ionization; FD, Fluorescence detection; FLD, Fluorimetric detection; GC, Gas chromat...

A. Kodge A. Lagashetty, S. Kalyane

Nanosized metal oxides dispersed polymer composites constitute a fascinating class of polymer composite materials. Synthesis of such composite materials through solvent casting enhances the polymer synthetic technology. Solvent casting method was used to prepare Cobalt oxide (Co3O4) dispersed Poly (methyl methacrylate) (PMMA) nano composite<span style="text-decoration: und...

2010
Elin Löfström-Engdahl Emma Aneheim Christian Ekberg Mark Foreman

The fact that the choice of organic diluent is important for a solvent extraction process goes without saying. Several factors, such as e.g. price, flash point, viscosity, polarity etc. each have their place in the planning of a solvent extraction system. This high number of variables makes the lack of compilations concerning diluent effects to an interesting topic. Often the interest for the r...

Journal: :Talanta 1969
T Fujinaga T Kuwamoto E Nakayama

A low-melting solid is used as organic solvent for liquid-liquid extraction at elevated temperatures followed by solidification and decantation of the aqueous phase.

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