Abstract:In this work we have developed a cost-effective method for the analysis of methy1 mercury (MeHg)in seawater fish muscle.The novelty of this method lies in the use of microwave-assissted exraction with acidia solution(HCL),addition of toluene ,and subsequent extraction with cysteine acetate solution where only MeHg is present because of its affinity for cysteine groups.MeHg in cysteine ……