Inorganic pollutants in the Padma River, Bangladesh |
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| Authors: | F Zereen F Islam M A Habib D A Begum M S Zaman |
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| Institution: | (1) Department of Biological Sciences 1000 ASU Drive no. 326, Alcorn State University, Alcorn State, MS 39096, USA Tel.: +601-634-0961 Fax: +601-634-0961 e-mail: zaman@lorman.alcorn.edu, US;(2) Department of Applied Chemistry and Chemical Technology, Rajshahi University, 1205 Bangladesh, BD |
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| Abstract: | The water and bed-sediment pollution status of the Padma River was determined by analysis of representative samples for selected
metals and ions. Water and bed-sediment samples were collected at a T-dam, Rajshahi, Bangladesh, for 7 months. Water and silt-metal
content analysis was performed using atomic absorption spectrophotometry or other analytical methods. The data showed the
variation of the metal ion-levels in water as follows: Ca 17.11–48.37 ppm, Na 17.51–20.09 ppm, K 1.00–3.60 ppm, Cr 2.80–7.00 ppm,
and SO4 4.17–5.48 ppm; in bed sediment, the levels were Cr 35–1050 ppm and Pb 12–48 ppm. The occurrence of Na, K and Ca was in the
normal range (US EPA permissible limit), but the levels of Cr in water were much higher than the permissible limit. The SO4 ion content was well below the pollution level. The concentration of Pb in the bed sediment was within the permissible limit
for the standard International Atomic Energy Agency (IAEA) Soil-5a, but the concentration of Cr in the bed sediment was significantly
higher than the permissible limit for the standard IAEA Soil-5a. Thus the Padma river water was polluted with Cr. The occurrence
of some ions showed a monthly variation.
Received: 19 August 1999 · Accepted: 12 October 1999 |
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| Keywords: | River water Bed sediment Trace metal Heavy metals River pollution |
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