February 15-18, 2009 Washington State Convention Center Seattle ...

INFLUENCE INDIVIDUAL AND MIXED HEAVY METALS (ZN, PB) AND DETERGENT
(LAS) ON THE MORTALITY FISH FRY 1G (Rutilus frisii kutum) OF CASPIAN SEA
Gholami, M.
Islamic Azad University
Sanandaj Branch, Iran.
Gholami62@yahoo.com
In this survey, the individual and mixed effects of heavy metals such as zinc and plomb and detergent (LAS) on 1g fish Fry
(Rutilus Frisii Kutum) were studied with 6 treatments and one blank in 3 replications using OECD method (1964) in the laboratory
and concentration limits were determined with logarithmic method for Plomb (0.11-0.17), zinc (0.1-0.5) and LAS (10-19)
mlg/l. Finally ,The achieved results were calculated with Probit analysis (Finny, 1971) and Correlation coefficient was regarded
for Plomb 0.93, zinc 0.92, and LAS 0.98 and in mixture of Plomb and LAS 0.93 and mixture of zinc and LAS 0.98.
The amounts of Lc 10 , Lc 50 and Lc 90 and permissible limits of above – mentioned pollutants were calculated too. Zinc effect on
fish fry caused Lc 10 =0.2 , Lc 50 =0.4 Lc 90 =0.7 ;Plomb effect caused Lc 10 =0.11, Lc 50 =0.21 , Lc 90 =0.34; LAS caused Lc 10 =5.91 ,
Lc 50 =11.62 , Lc 90 =22.71 ; mixture of LAS and Plomb caused Lc 10 =0.017 , Lc 50 =0.047 , Lc 90 =0.12 ; mixture of LAS and zinc
caused Lc 10 =0.02 , Lc 50 =0.09 , Lc 90 =0.37.
Hierarchically , the amounts of pollutants permissible limits for Plomb effect on fish fry were 0.021 , for zinc 0.4 , for LAS 1.16
and mixture of Plomb and LAS 0.004 and mixture of LAS and zinc 0.009.
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