Qatar Univ. Sci. J. (2002), 22 : 97- 106 Trace Metals in Wastewater Ponds in Qatar Jamal A. Sweileh and Ibrahim S. Al-Naimi Department of Chemistry Hussain A. Abulfatih, Roda F. AI-Thani, Mahmoud M. Kardousha Department of Biological Science Elhaj A. Elhaj Department of Marine Science Faculty of Science, University of Qatar, P.O. Box 2713, Doha, Qatar .. - .. Jt .. .J-:'t [6.Jt _;.Y 4.&.44- - 1" _,.tal I J-:1j..9 4>411 J.J-41...2. -'"=j 4i' ;;b; o 4>41.1 .... ;;..u ;;..)A '":-'-"'!n..9 .. £m_, j)l:!ll = .... rta.I.J.:?...,.:a' J..a... :.:i.;J wi .-.;.::_, • JS:.:P ruS < "'"'w Jji i.:-'-"'1_,_,11_, ¥U.I wi 4.... 1J...I.ll ,-,;.!! LoS_, .... .4.11 •. ,_, V":"""' ,_, "'"' ...., • '..9J"" ') ,_, _...> lj> _..) . - J !.)A ..,k # Y' \,o u¥ i.:-'-"'1..91 Loi 4>l:!il .J.:?>i J..a.. # JO , • ..>_,..1...2. J..a.. Loi JO Y''f j)l:!l4 l,r"-.1: l#l J4i ¥ls:.ol_, .!tj-\:UI Key Words: Atomic absorption, Cadmium, Chromium, Copper, Graphite furnace, Lead, Manganese, Nickel, Sediments, Trace metals, Wastewater. 97