نتایج جستجو برای: extraction time 1

تعداد نتایج: 4294492  

Mahnaz Qomi, Marjan Gholghasemi Mohammad Reza Saadat Sahel Emadzadeh

In this study, hollow fiber liquid phase microextraction (HF-LPME) coupled with highperformanceliquid chromatography (HPLC) with UV detection was applied for preconcentrationand determination of Diclofenac sodium in biological fluids. Parameters affecting the extractionprocess including pH of donor phase and acceptor phase, type of extraction solvent, stirring rate,extraction time, and salt add...

In this study, extraction of tannic acid using microchannel was investigated. Affective parameters were optimized. Different solvents including buthanol, ethylacetate and n-hexane as organic phase, methanol, propanol, ethanol and water as aqueous phase investigated. Microchannels with different confluence angles and diameters were examined. Microchannels with different confluence angles and dia...

Journal: :journal of chemical health risks 0
m. khoeini sharifabadi m. saber tehrani a. mehdinia p. abroomand azar s. waqif husain

a simple and sensitive, solid-phase extraction method for the removal of citalopram drug from waste water has been developed by using magnetic nanoparticles modified with surfactant sodium dodecyl sulfate. these magnetic nanoparticles have shown great adsorptive tendency towards citalopram drug. the effect of different parameters influencing the extraction efficiency of this drug were investiga...

ژورنال: :شیمی کاربردی 0
حسین هاشمی دانشگاه دریانوردی و علوم دریایی چابهار

in this study, a new modeling method based on three-layer artificial neural network (ann) techniques has been employed to predict the extraction yield of iron from real samples by means of molecularly imprinted polymer. input variables of the model were ph, absorption and desorption time, ligand amount and volume of solution while the output was extraction yield of iron ions. the mean squared e...

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...

Journal: :iranian journal of chemistry and chemical engineering 0
hocine kadi laboratoire de chimie appliquée et génie chimique, université m. mammeri de tizi - ouzou (hasnaoua), tizi-ouzou. 15000 algerie ramdane moussaoui laboratoire de chimie appliquée et génie chimique, université m. mammeri de tizi - ouzou (hasnaoua), tizi-ouzou. 15000 algerie sadia djadoun laboratoire de chimie appliquée et génie chimique, université m. mammeri de tizi - ouzou (hasnaoua), tizi-ouzou. 15000 algerie patrick sharrock laboratoire d’études et de recherches en imagerie spatiale et médicale, université paul sabatier, castres. 81104 france

in this study, microwave-assisted solvent extraction (mase) was used to recover oil residues from pomace olive using acidic hexane. results obtained demonstrated that oil extraction yield increased with time, the amount of acetic acid in hexane and power radiation. for both radiation powers used (170 and 510w), the optimal extraction time and most interesting content of acetic acid in hexane ar...

Journal: :Journal of chromatography. A 2003
Pablo Richter Betsabet Sepúlveda Rodrigo Oliva Katia Calderón Rodrigo Seguel

In the present work the efficiency of water under subcritical conditions for the extraction of pesticides having a broad spectrum of polarities from soils was evaluated. The pesticides under study were carbofuran, hexachlorobenzene, dimethoate, simazine, atrazine, lindane, diazinon, methylparathion, alachlor, aldrin-R, metholachlor, chlorpyrifos, heptachlor epoxide, dieldrin, endrin, 4,4-DDT an...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید باهنر کرمان 1388

copper extraction from heap 3 low grade ore at sarchechmeh is limited due to its mixed composition (copper oxide and sulphide minerals). changing this heap to a bioheap could improve the copper recovery.

2015
Bowen Chu Yao Shi Zhimin Li Hao Tian Wanyi Li Yuanzhong Wang

Gentisides are a class of chemical compounds which is considered as potential therapeutic substance for treatment of neurodegenerative disorders. The heat reflux extraction conditions were optimized for seven kinds of gentisides from the root and rhizome of Gentiana rigescens Franch. ex Hemsl. by employing response surface method. Based on univariate test, a Box-Behnken design (BBD) was applied...

Journal: :Proceedings of the International Astronomical Union 2013

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