期刊名称：Pakistan Journal of Analytical & Environmental Chemistry
印刷版ISSN：1996-918X
电子版ISSN：2221-5255
出版年度：2007
卷号：8
期号：2
页码：1-5
语种：English
出版社：National Centre of Excellence in Analytical Chemsitry
摘要：Previous research suggested that there is a strong interrelation between As,Fe and Mn in their occurring,transport and exposure to the environment. In this context,a comparative study was conducted in this current experiment to correlate As,Fe,Cu and Mn by determining their concentration in sediments (upper & bore hole) at different depths in the river Padma. Six locations were selected as sampling sites from entering point (upstream) and end point (downstream) of the river Padma. Sampling was carried out by borehole technique at several depths ranging from 1 meter to 5 meters. The samples were digested with HClO4- HNO3 acid mixture of ratio 2:3 in an acid digestion bomb. Arsenic was determined by HVG-AAS technique and Fe,Mn and Cu were determined by Flame-AAS technique. Large amount of Fe has been obtained,which has endorsed the previous assumptions of the relations of As with Fe. The small correlation value in case of As,Fe and Mn indicates that not all the minerals of arsenic and Mn but only hydroxides of Fe and Mn interfere with As. The small amount of Cu obtained indicated that any relation between sources and exposure of As and Cu and their interaction is yet to be found out..
