نتایج جستجو برای: edta extraction

تعداد نتایج: 176281  

Journal: :Forests 2023

Treatments of organic objects to extract ferrous compounds from waterlogged archaeological wood are well documented. For several years, numerous laboratories have been seeking determine suitable conservation treatments for such objects. chemical treatments, complexing agents as EDTA and DTPA, along with acids citric oxalic acids, were selected. In addition, oxidants reducing tested pre-treatmen...

Journal: :Separation and Purification Technology 2021

Water-soluble polymers are attractive materials for pollutants removal thanks to their ability easily interact with soluble metal cations. In the present contribution, chemical modification of biocompatible and non-toxic poly(vinyl alcohol) (PVA) was achieved ethylene diamine tetraacetic acid (EDTA) groups, thus leading new water-soluble polymers, named PVA(EDTA). Modification carried out using...

Journal: :Chemical Engineering Journal 2022

Amidoximated algal/polyethyleneimine beads are successfully applied for the sorption of two rare earths elements (REEs, Ln(III)): La (light) and Dy (heavy). The properties characterized by FTIR SEM-EDX analyses. pH effect on metal is investigated with a double objective: optimizing recovery separation. In binary solutions, Dy(III) shows slightly higher affinity sorbent than La(III); without sig...

2015
Naoko Ohashi-Fukuda Ryota Inokuchi Hajime Sato Kensuke Nakamura Masao Iwagami Tomoki Wada Masahiro Jona Takashi Hisasue Susumu Nakajima Naoki Yahagi Aibin Liang.

In ethylenediaminetetraacetic acid (EDTA)-dependent pseudothrombocytopenia (PTCP), automated platelet counts are lower than actual counts because of EDTA-induced aggregation. Factors contributing to the incidence of EDTA-PTCP are unknown, and no study has assessed the prognosis of EDTA-PTCP patients. This retrospective study assessed characteristics in EDTA-PTCP patients and matched controls to...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز - دانشکده شیمی 1388

اندازه گیری و آنالیز ترکیباتی که به عنوان مواد افزودنی به داروها و مواد غذایی اضافه می شود از اهمیت ویژه ای برخوردار است. یکی از این ترکیبات edta است که به عنوان عامل شلات کننده به اغلب مواد دارویی و مواد غذایی اضافه می شود. در کار تحقیقاتی حاضر از دو روش مختلف برای اندازه گیری edta در سفتریاکسون سدیم و برخی دیگر از سفالوسپورین ها استفاده شد. در قسمت اول از روش میکرواستخراج مایع-مایع پخشی (dllm...

Journal: :The Biochemical journal 1994
D K Bhattacharyya S Adak U Bandyopadhyay R K Banerjee

EDTA inhibits horseradish peroxidase (HRP)-catalysed iodide oxidation in a concentration and pH-dependent manner. It is more effective at pH 6 than at lower pH values. A plot of log Kiapp. values as a function of pH yields a sigmoidal curve from which a pKa value of 5.4 can be calculated for an ionizable group on the catalytically active HRP for EDTA inhibition. Among the structural analogues o...

Journal: :Water 2022

Ni-ethylenediaminetetraacetic acid (Ni-EDTA) poses serious threats to the ecological environment and human health, due its acute toxicity low biodegradability. The decomplexation efficiency of Ni-EDTA through conventional Fenton process has been constrained pH; thus, other appropriate approaches are required destroy stable chelate structure at a neutral pH. In this study, effect operating param...

2009
Frank L. Castille

To examine the hypothesis that EDTA increases hatching rates and survival of penaeid shrimp larvae by decreasing the toxicities of heavy metals through chelation, the toxicity of cadmium, a highly toxic metal, was compared to the toxicities of calcium and phenol in both the presence and absence of EDTA. In addition, the toxicity of EDTA at higher concentrations was examined. The toxicities of E...

Journal: :Chemosphere 2010
Fazal Hadi Asghari Bano Michael P Fuller

This investigation was made to examine the role of gibberellic acid (GA(3)), indole-3-acetic acid (IAA) and EDTA in improving phytoextraction of the Pb and plant growth on Pb added soil. GA(3), IAA and EDTA were applied separately and in combinations. GA(3) and IAA were applied as foliar spray and seed soaking. EDTA was applied in single and split doses. Analysis of the Pb in different parts of...

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