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the benefit of the individuals concerned, their DHAKA EXPORT PROCESSING ZONE. Bang. J.
families and communities is in itself the worthiest Life. Sci., 2008, 20(2) 45-51.
of goals. This global goal is ambitious and
adventurous, but it is neither extravagant nor Phytoplankton density in relation to water quality of
unrealistic. the wetland of Dhaka export processing zone (DEPZ)
was observed during August 2005 to February 2006.
219 ISLAM, A.; JOLLY, Y.N. (Chemistry A total 36 taxa of phytoplankton belonging to
Division, Atomic Energy Centre, Ramna, Dhaka). Chlorophyceae, Bacillariophyceae, Cyanophyceae
HEAVY METALS IN WATER AND FISHES OF and Euglenophyceae was identified. Phytoplankton
THE TANNERY AFFECTED VICINITY OF flora was dominated by Chlorophyceae (35.68%),
THE RIVER BURIGANGA. J. Bang. Acad. Sci., Bacillariophyceae (34.35%), Cyanophyceae (26.74%)
3
2007, 31 (2), 163-171. and Euglenophyceae (3.21%). Chlorella (57.41×10
3
cells/L), Navicula (52×10 cells/L), Microcystis
3
3
Ten water samples and five varieties of fishes (50×10 colony/L) and Euglena (11×10 cells/L) were
locally known as Pangash (Pangasius pangasius). the dominant species of Chlorophyceae,
Taki (Channa traitus), Puti (Puntius sarana), Bacillariophyceae, Cyanophyceae and
Shing (Heteropneustes fossilis) and Ayre (Mystus Euglenophyceae, respectively. Microcystis
aor) collected from the river Buriganga were aeruginosa is an indicator species of polluted water
investigated for Cr, Mn, Fe, Ni, Cu, Zn, As, Pb and which was found in the wetland. The mean value of
Cd of which Cr in four, Mn in three, Pd and Cd in temperature, electric conductivity (lit), total
only two and Fe and Zn in all samples could be suspended solids (TSS), pH, dissolved oxygen (DO),
measured. The mean contents of Cr, Mn, Fe, Zn, biochemical oxygen demand (BOD 5), Chemical
Pb and Cd were found to be 2.88, 0.42, 2.42, 0.15, oxygen demand (COD), total-N, total-P, total-K and
-3
1
0.00585 and 0.00275 mg dm , respectively. total-S contents of water were 42" C, 2252 µS cm- ,
Compared to the drinking water quality standards, 256 mg/L, 8.71, 2.74 mg/L, 53.63 mg/L, 237.34
the concentrations of Cr, Mn and Fe were found to mg/L, 26.0 mg/L, 3.94 mg/L, 555.0 µg/L. and 129.68
exceed their respective guideline values and the mg/L, respectively. Phytoplankton was absent in
contents of Zn, Pb and Cd are still below their point-source where the maximum water temperature
0
standard values. Fe, Ni, Cu and Zn could be was 50 C. The strong negative significant correlations
measured in all fish flesh samples and their were observed between temperature and COD with
concentrations ranged from 574 -1206, 15.6 - 45.7, phytoplankton.
1
21.5 - 32.6, 35.2 - 61.4 mg kg' (d.w.b),
respectively. Puti fish in most cases appeared to 615.5 : MEDICAL SCIENCES:
contain higher concentrations of the elements than
those in other fishes. The contents of Cu and Zn PHARMACOLOGY
were found below the Australian National Health
and Medical Research Council (NHMRC) 221 AHMED, M. (Dept. of Biochemistry and
recommended levels. The concentration of Ni was Molecular Biology, Dhaka University, Dhaka);
also found below its safe maximum limit. The daily NAZNEEN, S. (Dept. of Zoology, Dhaka
dietary intake values of Fe obtainable from the fish University, Dhaka) & AKHAND, A.A. (Dept. of
species studied were found below the allowance Genetic Engineering and Biotchnology, Dhaka
limits indicating the deficiency of Fe levels in the University, Dhaka). MOLECULAR ANALYSIS
fishes. OF HEPATITIS B VIRUS DNA AND MUTATION
STATUS IN PATIENTS UNDER LAMIVUDINE
220 KHAN, F.A.R.; ALAM.; A.K.M. & [(-) 2' 3'-DIDEOXY-3' THIACYTIDINE]
HOQUE, S. (Dept. of Environmental Sciences, THERAPY. Dhaka univ. J. Pharm. Sci., 2005, 4
Jahangirnagar University, Savar, Dhaka). (2), 121-125.
PHYTOPLANKTON DENSITY IN RELATION TO
WATER QUALITY OF THE WETLAND OF Quantitative analysis of HBV-DNA is extensively
used worldwide for monitoring of lamivudine
64
