4. Conclusion
The toxicity of arsenic is species dependent; therefore speciation information is mandatory for those fish species living in As contaminated ecosystem. The results obtained demonstrate the suitability of the procedure for screening and quantification ofinorganic arsenic species (As3+ and As5+) in muscles samples of different fish species. The resulted data indicates s that dietary intakes of inorganic arsenic via understudied fish species are higher than reported values in literature. While the calculated daily intake of inorganic arsenic contents in fish muscles did not exceed the permissible values recommended by FAO/WHO. Future study is also needed to develop methodologies to evaluate the total,
inorganic and organic arsenic in different fish species and their
bioavailability.