cifri annual report 2007- 2008 - Central Institute of Brackishwater ...
cifri annual report 2007- 2008 - Central Institute of Brackishwater ...
cifri annual report 2007- 2008 - Central Institute of Brackishwater ...
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CIFRI ANNUAL REPORT 200 7- <strong>2008</strong><br />
p'$T7<br />
rr if'<br />
FY,<br />
, .,,.<br />
6:<br />
Sedirrr err t arid Wut~r Qualitjy c!f'tlra river<br />
Water pH <strong>of</strong> river Drtrnodar was fbund in the alkaline<br />
range 7.31 - 8.9 (average 8.1). Conductonce in the<br />
nornial range <strong>of</strong> 169 307 pS cn~" (average 234 pS ctn'<br />
I<br />
). 7'hc Ranigan-j to I>urgapur arca exhibited highest<br />
valucs <strong>of</strong>' thc conductance duc to tlic impact <strong>of</strong><br />
industrial effluents. Dissolved oxygen contcnt was<br />
good. Plankton and submerged wccds incrcascd DO to<br />
I<br />
vcry high lcvcls up to 13.3 mgl at Si~tnalpur. Like<br />
conductancc. HOD <strong>of</strong>'rhc Ranignr~j to Di~rgapur strctcll<br />
was Sound to exceed the lirnit value <strong>of</strong> 4 pprn (detcctcd<br />
up to 7.4 rngl I). Alkalinity and hardness values wcrc in<br />
the normal ratlgc. Moderate content <strong>of</strong> phosphr~te was<br />
noticed in the river sfretch, but tnany a titnc dctecteci in<br />
traccs (observed range 0 - 0.24 mgl.'). In sornc ci~scs<br />
presence <strong>of</strong> frcc ammoni;~ was also noticed, though<br />
not at a higher level (obscrvccl rangc 0 - - 0.01 111g1 I).<br />
7'hc conccntr;~tion ol'C'd. C'LI. I'b "i! Zn ill water \v;~s in<br />
traccs. Exccpt Zn tllc lcvcls <strong>of</strong>' C'u, C'd arid 1'1)<br />
in tlic<br />
scdilncnt at 2111 the stations wcrc in traccs. 'l'hc mcan<br />
valucs <strong>of</strong>'Zn ranged bctwccn 7.2 ;tntl3S.4 rig kg ' soil.<br />
Ass~ssmertt <strong>of</strong>' ~wtrr / sctlirtrcrlt rrrit.rohicrl c#rrr;r7rtrc<br />
actirpi[y irr river Ilarriodcr<br />
Watcr and scdimcnt A1,P a11d 11-Glu activity: 'T'lic<br />
rcsults indicated vcry high ALP' rf.tivity at Jamalpur.<br />
Hoth thc cnzynlc activities werc lowcst at Uurdwnn,<br />
possibly due to extct~sive sand rrlirling at the ;ma.<br />
Thcrc wcre wide variations in activities in diflkrcrit<br />
satnplings and arc possibly the sc;isot~nl variations.