نتایج جستجو برای: extractant carrier properties

تعداد نتایج: 933878  

2001
Krishna R. Reddy Carlos Chaparro

A series of batch tests were conducted to investigate the relative desorption potential of mercury from kaolin and glacial till soils under the effect of three extractant agents, namely, KI, NaEDTA and NaCl (all of them with a concentration of 0.1 M). These tests were conducted under different pH conditions (within a pH range between 2 and 12). Also batch tests using deionized water were perfor...

2012
M. R. Ali R. K. Biswas S. M. A. Salam A. Akhter A. K. Karmakar M. H. Ullah

The solvent extraction of Fe from aqueous chloride solution by bis-(2,4,4-trimethylpentyl) monothiophosphinic acid (Cyanex 302, H2A2) dissolved in kerosene has been investigated over a wide range of aqueous acidity as a function of phase contact time, concentrations of Fe, H and Cl in the aqueous phase, Cyanex 302 concentration in the organic phase and temperature. The equilibration time is 50 ...

Journal: :Journal of environmental quality 2010
Mohsen Soleimani Mohammad A Hajabbasi Majid Afyuni Samira Akbar Julie K Jensen Peter E Holm Ole K Borggaard

Ethylenediaminetetraacetic acid (EDTA), nitrilotriacetic acid (NTA), and other synthetic polycarboxylic acids have been shown to possess substantial capacity as washing agents of heavy metal-polluted soils, but they are environmentally problematic. Therefore, a sample of natural soluble humic substances (HS) was tested as a possible substitute. The efficiency of HS to extract cadmium (Cd), copp...

Journal: :Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 2004
B Ramachandra Reddy J Rajesh Kumar A Varada Reddy

The liquid-liquid extraction of zirconium(IV) from acidic chloride solutions was carried out with Cyanex 272 as an extractant diluted in kerosene. An increase of the acid concentration decreased the percentage extraction of metal, which indicates that the extraction follows ion exchange-type mechanism: MO2+(aq) + 2(HA)2(org) <--> MO (HA2)2(org) + 2H+(aq), where, M = Zr(IV); HA = Cyanex 272. The...

Journal: :Molecules 2023

Paprika Capsicum annuum L. contains useful molecules such as carotenoids and polyunsaturated fatty acids, which are considered high-value functional health ingredients. To obtain these compounds, paprika was extracted using different methods (Soxhlet, SC-CO2, SC-CO2 with co-extractant) at parameters. The results showed that the carotenoid content decreased addition of co-extractant while acid y...

Journal: :journal of heat and mass transfer research 0
akanksha swarnkar national institute of technology, raipur. amit keshav national institute of technology anupam bala soni national institute of technology

the feasibility of extractive reaction of methacrylic acid from aqueous solution using a quaternary amine, tri–octyl methyl ammonium chloride (tomac) as an extractant, was studied. the diluents chosen in the present work belong to different chemical classes, n–butyl acetate, carbon tetrachloride, isoamyl alcohol, methyl isobutyl ketone, and toluene. the effect of initial acid concentration in t...

Journal: :archives of razi institute 2016
s. moradi bidhendi h. zolfagharian n. mohamadpour dounighi f. saraei p. khaki

in recent years, encapsulation of drugs and antigens in hydrogels, specifically in calcium alginate particles, is an interesting and practical technique that was developed widespread. it is well known that alginate solution, under proper conditions, can form suitable nanoparticles as a promising carrier system, for vaccine delivery. the aim of this study was to synthesis alginate nanoparticles ...

2012
S. Y. Afifi M. M. Mustafa E. M. El Sheikh M. A. S. Gado

The extraction of thorium from aqueous solution was studied using the organic extractant trioctyl phosphine oxide (TOPO) dissolved in cyclohexane. The parameters affecting the extraction, determination and stripping of Th (IV) included type of extractant, shaking time, extractant concentration, pH, aqueous to organic phase ratio (A/O), temperature, certain interfering ions and stripping agents....

Journal: :Journal of chromatographic science 2015
Shiju Wu Tingting Jin Jing Cheng Hongbin Zhou Min Cheng

In this work, a rapid method based on air-assisted liquid liquid microextraction (AALLME) was developed for the determination of three fungicides (azoxystrobin, diethofencarb and pyrimethanil) in water and juice samples. A narrow-neck glass tube was made to facilitate collection of the low-density extractant. The mixture of extractant and sample solution is rapidly sucked into a 5-mL glass syri...

Journal: :Chemical & pharmaceutical bulletin 2003
Kotaro Iida Youhei Hayakawa Hirokazu Okamoto Kazumi Danjo Hans Leuenberger

An attempt was made to produce carrier particles for dry powder inhalations by the surface treatment of lactose particles with aqueous ethanol solution. Drug/carrier powder mixtures were prepared consisting of lactose carriers with different particle surface properties and micronized salbutamol sulfate. These powder mixtures were aerosolized by Spinhaler, and in vitro deposition properties of s...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید