Hassan Nasrollahzadeh Saravi, Reza Pourgholam, Nima Pourang, Maryam Rezaei, Asieh Makhlough, Horieh Unesipour,
Volume 23, Issue 103 (8-2013)
Abstract
Background and purpose: Heavy metals are non-degradable pollutants that could accumulate in marine animals including fish. The aim of this study was to determine the levels of six heavy metals (Zn, Cu, Ni, Pb, Cd and Hg) in edible tissue of Caspian carp (Cyprinus Carpio). We also studied the bioaccumulation factor (BFA) and target hazard quotients (THQ) of this fish in the southern Iranian Caspian Sea coast.
Materials and methods: Twenty eight samples of fish were collected from seine and trawl during winter and spring 2010. Heavy metals were prepared (using Freeze dryer) by digestion and extraction process and then analyzed using atomic absorption equipped with flame, graphite and cold vapor system.
Results: Results showed that Zinc (185±57) and Cu (3.68±0.30) µg/g.dw were seen more amongst the contaminants in the edible tissue of the Caspian carp. Concentration of Hg was 0.50±0.17 µg/g.dw and levels of Cd and Pb were below the limit of detection. BAF of metals were Zn> Cu> Hg.
Conclusion: Ni, Cd and Pb in the Caspian carp muscle were lower that standard levels, but concentration of Hg was higher than the standard levels recommended by WHO, and ERL and ERM limits.
Hasan Nasrollahzadeh Saravi, Horieh Unesipour, Nima Pourang,
Volume 24, Issue 113 (6-2014)
Abstract
Background and purpose: Hydrocarbons such as Polycyclic Aromatic Hydrocarbons (PAHs)
are considered as priority organic compounds pollutants of the Caspian Sea due to their high toxicity
nature. Increasing the concentration of hydrocarbons in the environment has adverse effect on aquatic life
and human health. This study was conducted to determine the 16 Polycyclic Aromatic Hydrocarbons
(16PAHs) concentrations in the edible tissue of Cyprinus Carpio in the Caspian Sea..
Material and Methods: A total of 28 samples of fish were collected during winter and spring.
All samples were prepared by Soxhlet and extracting processes and then determined using High
Performance Liquid Chromatography (HPLC) instrument.
Results: Results showed that pattern of 16PAH compounds were obtained in 82% of samples (23
samples out of 28) for 3, 4 and 5 rings. The mean concentration and standard error (±SE) of edible tissue
of Cyprinus Carpio mussels were observed 2.21 (±0.42) μg/g.dw.
Conclusion: We observed Pyrene (75%), Fluorathene (61%), Benzo (a) pyrene (43%) and
Chrycene (36%) in edible tissue of Cyprinus Carpio. Hence, consumption of this fish could endanger
human health.
