Preeda Parkpian, Ph.D1, Anwar Mallongi 2

1, Asia Institute of Technology, Thailand

2,Department of Environmental Health,  Faculty of Public Health, Hasanuddin University,  Makassar, South Sulawesi - Indonesia

 

 

BACKGROUND - A human health risk assessment was accomplished based on conservative assumptions.

 

OBJECTIVE - This study aimed to investigate the health risks by examined the potential for adverse health effects from ingestion of bivalve (Anadara trapezia Sp.), fishes (Thunnus sp.), (L. Campechanus Sp) and oyster (Crassostrea virginica Sp.) collected from the shoreline at Peling Strait, Central Sulawesi.

 

METHODS - Sampling survey for those aquatic stuffs were collected in five stations along the sample tracts in shoreline. About 10-15 sample of each species were collected at every station. All samples were determined by CV-AAS (Cold Vapor Atomic Absorption Spectrophotometer; SHIMADZU, Spectr. AA 6200) after NabH4 (Sodium Borohydride) reduction for Total Hg Analysis. The detection limit was 0.001 µg L-1. 

 

RESULTS - Result revealed that the Mercury accumulation in (Anadara trapezia Sp) were range between  17.33 to 89.02 µg kg-1dw, in (Thunnus, SP) ranged from 36.85 to 62.37 µg kg-1dw,  in  (L. Campechanus)6.84 to 23.37µg kg-1dw, and in (Crassostrea Virginica Sp)  ranged from 15.50 to 32.34 respectively.The estimated PTWI (Provisional Tolerable Weekly Intake) concentration of Hg in the aquatic stuffs  showed that the magnitude of EWI of Anadara trapezia.Sp., Thunnus sp., L. Campechanus  and oyster  Crassostrea virginica Sp consumption per week for body weight of 70 kg for the local people. The highest values found were 0.89,  0.62, 0.23 and 0.32 µg kg-1dw, respectively. Those values were still lower than (PTWI 5.0 µg/kg bw) and not be at risk. In addition, the highest THQ (Target Hazard Quotient) mercury concentrations of those four aquatic foodstuffs were 20.90, 14.65, 12.81 and 7.59 μg/kg dw respectively which indicated that although other stations were still safe,  all of the seafood consumed by some high-risk groups of  people was not safe or higher than the PTWI at the stations have elevated Hg concentration.