Bioaccumulation of lead, mercury and nitrates of Macrobrachium rosenbergii (Shrimp) as indicator of water pollution in Iponan River, Cagayan de Oro

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Research Paper 01/12/2019
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Bioaccumulation of lead, mercury and nitrates of Macrobrachium rosenbergii (Shrimp) as indicator of water pollution in Iponan River, Cagayan de Oro

Josephine O. Ampit, Mariel Jane T. Cuerquis, Kristine Jade P. Quirante, RJ Krista Raye Y. Leocadio, Gina C. Lacang
J. Bio. Env. Sci.15( 6), 30-39, December 2019.
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This study aimed to examine the mercury (Hg), lead (Pb), and nitrate (NO3) accumulation on Macrobrachium rosenbergii (shrimps) of Iponan River. The samples were analyzed using Cold Vapor Atomic Absorption Spectroscopy (CVAAS) for the heavy metals (Hg & Pb) and Bruccine Colorometric Method (BCM) for nitrate. One-way Analysis of Variance (ANOVA) and Standard Deviation analysis were used to test the significant difference in the concentration of the analytes on shrimps between sampling periods. Statistically, based on the results, there is significant difference on the concentration of lead, mercury and nitrates among sampling periods. M. rosenbergii contained high measured values of nitrate (NO3) analyte within two (2) sampling periods with concentrations of 120>32.8 ppm and 842>32.8 ppm respectively which exceeded the EPA standards. Lead concentration exceeds the BFAR standard (1.36>0.5) ppm during the second sampling while Hg content is present within specified standards. Results suggest that M. rosenbergii is a bioaccumulator of mercury (Hg), lead (Pb), and nitrates (NO3) and can be used to monitor pollution level in a river. This result could be used as basis for strengthening policies regarding water quality management and monitoring of Iponan River.


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