Details

Autor(en) / Beteiligte

• Hassan, Mahmud
• Rahman, Mirza A.T.M. Tanvir
• Saha, Badhan
• Kamal, Abdul Kadir Ibne

Titel

Status of Heavy Metals in Water and Sediment of the Meghna River, Bangladesh

Ist Teil von

• American journal of environmental sciences, 2015, Vol.11 (6), p.427-439

Erscheinungsjahr

2015

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• The present study has been undertaken to assess the levels of heavy metals and the extent of pollution in the surface water and sediments from the Meghna river. Water and sediment samples were collected by the Standard Methods and, processed and analyzed for heavy metals using Flame Atomic Absorption Spectrophotometer. Pb and Ni were found below detection limit in river water. Based on the findings, the Meghna river water can be considered as unpolluted with respect to Cd, Cr, Mn and Zn, whereas concentration of Fe was above the standard value according to recommended standard guidelines. The sediment geo-accumulation index values showed no pollution for most of sampling sites for all studied heavy metals. Pollution Load Index values showed that all the studied sampling sites were not polluted and on the other hand mean Contamination Factor values showed low pollution for all measured heavy metals except Ni which indicated moderate pollution.