نتایج جستجو برای: dispersed solvent extraction dnpdse contractor

تعداد نتایج: 239675  

Journal: :Canadian Journal of Chemistry 1956

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...

Mehran Moradalizadeh, Naghmeh Samadi Peyman Rajaei

The genus Haplophyllum, which belongs to the Rutaceae family, includes 18 species in Iran. In this study, after collecting plant material, botanical identification and suitable drying, the essential oils from aerial parts of Haplophyllum robustum Bge. were extracted by three different isolation techniques, conventional hydrodistillation (HD), microwave-assisted hydrodistillati...

2017
S. P. Jeevan Kumar S. Rajendra Prasad Rintu Banerjee Dinesh K. Agarwal Kalyani S. Kulkarni K. V. Ramesh

Oilseeds are crucial for the nutritional security of the global population. The conventional technology used for oil extraction from oilseeds is by solvent extraction. In solvent extraction, n-hexane is used as a solvent for its attributes such as simple recovery, non-polar nature, low latent heat of vaporization (330 kJ/kg) and high selectivity to solvents. However, usage of hexane as a solven...

Journal: :analytical and bioanalytical chemistry research 2015
zahra dehghani shayessteh dadfarnia ali mohammad haji shabani mohammad hasan ehrampoush

a simple, rapid and sensitive solvent assisted-dispersive solid phase extraction method was developed for the extraction of iron(ii) prior to its spectrophotometric determination. the fe(ii) reacted with 2,4,6-tris(2-pyridyl)-1,3,5-triazine, neutralized with sodium dodecyl sulfate and extracted onto the fine particles of benzophenone which were formed upon rapid injection of a mixture of benzop...

Journal: :Chemical communications 2010
Xiaoyan Zhang Anthony C Coleman Nathalie Katsonis Wesley R Browne Bart J van Wees Ben L Feringa

A dispersion of graphene in ethanol was achieved using solvent exchange from N-methyl-2-pyrrolidone (NMP) that enables broader application of dispersed graphene.

Journal: :Clinical chemistry 1978
P Carter J E Wallace K Blum

We present an improved method for ultraviolet spectrophotometry of theophylline in serum. We studied various extraction techniques aimed at eliminating interferences from co-extractable serum constituents. In the resulting modified procedure, 1 ml of serum is required and a salt-solvent pair of ammonium sulfate and chloroform/hexane is used for extraction. The solvent forms the top phase after ...

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...

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