Analysis of trace amounts of metal ions using silica-based chelating...

Critical Reviews in Analytical Chemistry;  January 1, 2003 ;     700+ words ......separation and preconcentration of trace metal ions from various substrates. General methods...in the extraction of trace amounts of metal ions have been reviewed critically and have...resin, separation, preconcentration, metal ions. I. INTRODUCTION An analysis of metal...

Filter removes contaminants from liquids and gases.

New Materials Japan;  March 1, 2001 ;     221 words ......exchange resin has been used to remove metal ions in exhaust water, but because it selectively...adsorbs and captures low concentrations of metal ions, this is not always sufficiently rigorous...capable of forming a chelate with heavy metal ions, have also been used to remove ...

Japanese Inventors Develop Metal Ions Separating Method

US Fed News Service, Including US State News;  November 3, 2006 ;     260 words ......separating strontium ions from other alkaline metal ions. According to the U.S. Patent & Trademark...invention relates to a "method for separating metal ions, which comprises adding a selective capturing...aqueous solution containing plural types of metal ions, said selective ...

Idaho Inventor Develops Programmable Conductor Memory Cell Structure

US Fed News Service, Including US State News;  November 11, 2006 ;     319 words ......In programmable conductor memory cells, metal ions precipitate out of a glass electrolyte element...depends, in part, on the availability of metal ions. It is important that the metal ions come only from the solid solution of the memory...

Fabrication of Metal-Selective Materials.(Tohoku National Industrial...

Japanese New Materials;  June 1, 2001 ;     515 words ......effectively and selectively separating useful metal ions from low-grade ores, and industrial wastes...developed for the selective separation of metal ions, by combining organic polymers and chelating...that react specifically with targeted metal ions. With the ever expanding use of ...

Absorption behavior of metal ions on Chitin/cellulose composite fibers...

Textile Research Journal;  June 1, 2002 ;     700+ words ......absorptive ability of the fibers for metal ions is examined by measuring absorption...isotherms at different pHs. For some metal ions, the modified fibers show improved...can be used as an absorbent for metal ions [7] and dyes [5]. There are many...

Mechanism of Copper Mediated Triple Helix Formation at Neutral pH in...

Biophysical Journal;  April 1, 2007 ;     700+ words ......base triplets, stabilized by Cu^sup 2+^ metal ions in amounts mirroring in vivo concentrations...discussed. INTRODUCTION Various divalent metal ions are known to interact with nucleic acids...investigations underlined the important role of metal ions in various functions of DNA in ...

U. Brain Institute awarded grant

Deseret News (Salt Lake City);  September 4, 2007 ;     264 words ......Alzheimer's patients have higher levels of metal ions such as aluminum, copper and iron in...stress is often caused by high levels of metal ions in the body. We want to find a safe...therapy can be used to reduce amounts of metal ions in the brain. Past attempts at the therapy...

Neurodegenerative diseases and metal ions volume 1: metal ions in life...

Chemistry and Industry;  March 12, 2007 ;     700+ words ...* Neurodegenerative diseases and metal ions volume 1: metal ions in life sciences A Sigel, H Sigel & RKO Sigel...copper-regulation network. Therefore, the links between metal ions and brain disease are diverse, complicated, and far...

Purification of a Protein Tagged with (His)6 at Its N-terminus,...

Biopharm International;  May 1, 2004 ;     448 words ......Chelating HP columns charged with different metal ions. Results suggest that the position of...will form complexes with many transition metal ions, binding effects vary depending on the...HP 1 ml columns charged with different metal ions (Ni2+, Cu2+, Co2+, or Zn2+). The purity...

California Inventor Develops Metal Ions Removal Apparatus

US Fed News Service, Including US State News;  December 14, 2006 ;     294 words ......provides a method for selectively removing metal ions of interest from a solution, such as...agent and a first concentration of the metal ions with an ion-exchange resin, such as a...solution to exchange selected ones of the metal ions in the solution for selected preferred...

Studies on calcium phosphate precipitation: effects of metal ions used in...

Biomedical Materials;  March 1, 1995 ;     142 words ...Metal ions used in dental materials may modify the...oral calcium phosphate. The effects of 26 metal ions, of which 23 are used in dental materials...transformation and induction time, effects of metal ions were classified into three types: inhibitory...

Analytical chemistry.

Chemistry and Industry;  June 4, 2001 ;     700+ words ......University of Hull Colourimetric detection of metal ions separated on a microchip Miniaturised...report the colourimetric detection of metal ions separated on a microchip using a light-emitti...sulphate and used as the running buffer. Metal ions could be injected into the running ...

Process encases metal-detecting liposome in Sol-Gels

Chemical Engineering Progress;  July 1, 1997 ;     457 words ......encapsulated in sol-gels, to react with metal ions in solution in the hope they can detect...believed that the introduction of charged metal ions prompted the liposomes to scramble their...which they found reacted rapidly to metal ions, with sensitivities 4 to 50 times greater...

EFFICIENT PRECONCENTRATION OF Cu^sup 2+^, Zn^sup 2+^ AND Fe^sup 3+^ WITH...

Collection of Czechoslovak Chemical Communications;  July 1, 2007 ;     700+ words ......interferences on the recovery of the metal ions were investigated. A 5-ml portion of...sufficient for quantitative elution of the metal ions from 0.5 ml of the sorbent packed in...short. Hence, the rate of sorption of metal ions by a sorbent is an important factor that...