Humic substances in the sediments of lake Edku, Egypt : II-its role in the accumulation of trace metals
Other Title(s)
المواد الهيومية في رواسب بحيرة إدكو-مصر : 2-دورها في تراكم العناصر النادرة
Source
Journal of King Abdul Aziz University : Marine Science
Issue
Vol. 5, Issue 1 (31 Dec. 1994), pp.35-47, 13 p.
Publisher
King Abdulaziz University Scientific Publishing Center
Publication Date
1994-12-31
Country of Publication
Saudi Arabia
No. of Pages
13
Main Subjects
Earth Sciences, Water and Environment
Abstract AR
-Humic and fulvic acids extracted from Lake Edku sediments are highly enriched in Cu, Zn and Ni and to small extentin Co when compared to the bulk sediment, but depleted in Feand Mn.
The mean concentrations of Cu, Ni, Zn and Co in the humic acid extract were, 359, 208, 188 and 47 p,g g~ 1 while their concentrations in the bulk sediment were 65, 84, 129 and 40 (jcg g _ 1 respectively.
Humic acid showed relatively higher concentrations for all elements except Zn.
The presence of humic acid in solution enhances the transfer of Cu, Cd, Ni and Zn into the suspended matter at pH's higher than 6, through the precipitation of metal-humic acid complexes and adsorption on freshly precipitated humic acid.
Fe showed another mechanism which, most probably, is the formation of colloidal hydrous oxides.
Abstract EN
-Humic and fulvic acids extracted from Lake Edku sediments are highly enriched in Cu, Zn and Ni and to small extentin Co when compared to the bulk sediment, but depleted in Feand Mn.
The mean concentrations of Cu, Ni, Zn and Co in the humic acid extract were, 359, 208, 188 and 47 p,g g~ 1 while their concentrations in the bulk sediment were 65, 84, 129 and 40 (jcg g _ 1 respectively.
Humic acid showed relatively higher concentrations for all elements except Zn.
The presence of humic acid in solution enhances the transfer of Cu, Cd, Ni and Zn into the suspended matter at pH's higher than 6, through the precipitation of metal-humic acid complexes and adsorption on freshly precipitated humic acid.
Fe showed another mechanism which, most probably, is the formation of colloidal hydrous oxides.
American Psychological Association (APA)
al-Sayyid, Muhammad Abd al-Khaliq& Abu al-Najah, Wafiqah Muhammad& Hilm, Yusuf& Bultaji, Ali Ibrahim. 1994. Humic substances in the sediments of lake Edku, Egypt : II-its role in the accumulation of trace metals. Journal of King Abdul Aziz University : Marine Science،Vol. 5, no. 1, pp.35-47.
https://search.emarefa.net/detail/BIM-396861
Modern Language Association (MLA)
al-Sayyid, Muhammad Abd al-Khaliq…[et al.]. Humic substances in the sediments of lake Edku, Egypt : II-its role in the accumulation of trace metals. Journal of King Abdul Aziz University : Marine Science Vol. 5, no. 1 (1994), pp.35-47.
https://search.emarefa.net/detail/BIM-396861
American Medical Association (AMA)
al-Sayyid, Muhammad Abd al-Khaliq& Abu al-Najah, Wafiqah Muhammad& Hilm, Yusuf& Bultaji, Ali Ibrahim. Humic substances in the sediments of lake Edku, Egypt : II-its role in the accumulation of trace metals. Journal of King Abdul Aziz University : Marine Science. 1994. Vol. 5, no. 1, pp.35-47.
https://search.emarefa.net/detail/BIM-396861
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 45-46
Record ID
BIM-396861
