Chowdhury, A.Z.M.S., Y. Shibata. DEVELOPMENT OF METHODS FOR REMOVING OF ARSENIC FROM ARSENIC-CONTAMINATED GROUND WATER: IN CONTEXT OF BANGLADESH
Environmental Chemistry Division, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki 305-0053, Japan (a.chowdhury@nies.go.jp)
Ground water is one of the major drinking water sources in Bangladesh. Ground water contamination by arsenic has already taken serious turn in Bangladesh. According to available information, millions of people are "at risk" endangered by arsenic in Bangladesh. In view of this fact we feel that an extensive research work on arsenic contamination of ground water in Bangladesh is of great importance and step will be taken as well as recommendation for providing arsenic free drinking water supply in mitigating the arsenic lesions.
Recently, we synthesized 9 heterocyclic new chelating agents, dimercapto substrate, from isothiocyanates. Treatment of dimercapto substrate by arsenic trioxide, triphenyl arsine, or phenyl arsenic oxide in solvent water-ethanol afforded new heterocyclic arsenic adducts. In a similar manner, we attempted and studied application to arsenic extraction in water-ethanol medium from arsenic contaminated ground water of Bangladesh by using dimercapto substrate for free drinking water.