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Synthesis, characterization and analytical applications of chelating resin containing orcinol

Shah B. A., Shah A. V., Patel N. B, Shah M.

Polish Journal of Chemical Technology

2012

Vol. 14, nr 2

88-96

A chelating resin based on Salicylic acid-Formaldehyde copolymer, containing Orcinol (SFO), has been synthesized and characterized on the basis of Elemental Analysis, Particle Size Distribution, FT-IR Analysis, XRD, SEM and Optical Photographs. The Physico-Chemical properties have been studied. This resin is highly stable in acidic and alkaline solutions and has been studied as a chelating sorbent for heavy metal ions and transition metal ions. The Exchange capacity order is Ni(II) > Cu(II) > Zn(II) > Cd(II) > Pb(II). The effect of nature and concentration of different electrolytes on distribution coefficient (Kd) for metal ions have been investigated. Separation of synthetic mixtures containing Cu(II)-Pb(II), Ni(II)-Cd(II) and Brass constituents has been carried out using a column prepared from the synthesized chelating resin. The developed procedure was also tested for the removal of Cd(II) and Pb(II) from natural water of Purna River near by Navsari, Gujarat, India. Keywords

Increasingly green approaches to the determination of selected trace organics in complex matrices. Short chain carboxylic acids

Zygmunt B., Banel A., Wasielewska M.

Ecological Chemistry and Engineering. S

2011

Vol. 18, nr 3

306-318

Nowadays the great stress is put on environment protection and the activities to minimize the effect of chemical analyses on the environment are discussed. When environmentally friendly methodologies of analytes determination are applied the term “green analytical chemistry” is used. In general, the determination of organic compounds in complex matrices, which is a frequent analytical task, requires separation of sample components and often analytes enrichment. The latter has often been regarded as responsible for environment damaging effects to a higher degree, and this aspect of analysis was emphasized and characteristics of particular techniques reviewed. Methodologies to determine low molecular organic acids in a variety of sample compositions are comprehensively described and compared with respect to environmental impact and results quality. The trends to make the sample treatment as well as separation increasingly green have been inferred and supported by personal experience and literature evidence.

Obecnie społeczeństwa kładą duży nacisk na ochronę środowiska. Działania w tym kierunku są prowadzone także w zakresie chemii analitycznej, co określa się terminem „zielona chemia analityczna (GAC)”. W artykule przeanalizowano wprowadzanie nowych metod i technik analitycznych oraz modyfikację już opracowanych metodyk oznaczania w kierunku bardziej przyjaznych środowisku. Konkretne procedury oznaczania krótkołańcuchowych kwasów karboksylowych zostały ocenione pod kątem ich ewentualnego wpływu na środowisko.