Synthetic resins, specific adsorption

Adsorption by synthetic polymeric resins is an effective means for removing and recovering specific chemical compounds from wastewater. The operation is... 

Dietrich, A.M., D.S. Millington, and Y.-H. Seo. 1988. Specific identification of synthetic organic chemicals in river water using liquid-liquid extraction and resin adsorption coupled with electron impact, chemical ionization and accurate mass measurement gas chromatography-mass spectrometry analysis. J. Chromatogr. 436 229-241. 

Latex of the Indian mbber is known to have a number of specific features in its colloid-chemical properties as compared with those ones of synthetic mbber latexes. The main differences are much more sizes of the latex particles that attain 200.0-350.0 nm as well as a specific property of their protective adsorption layer consisting of a set of the natural high-molecular fatty acids, alcohols, resinous acids and protein-like compounds [ 13]. In this case content of the dry substances soluble in water is of about 3.0-3.5 mass % in a virgin latex, according to [13]. This is approximately in accordance with the result of analysis of the investigated latex (2.9 mass %). Fatty acids in latex are presented by oleic, linoleic ones as well as by other carboxyl-containing compounds that have concentration of 1.05-2.05 mass % in the acetone extract for Indian mbber latex. Content of the protein substances in the freshly gathered latex was up to 4.0 mass %, while free amino acids were foimd in the concentration of 0.2 mass %. 

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