Risk Assessment of Inorganic Arsenic in Rice and Seafood among Office Workers at PT XYZ using Probabilistic Method

Abstract

The risk assessment of inorganic Arsenic (iAs) exposure through rice,and seafood was carried out with a probabilistic risk assessment method using a Monte Carlo simulation. The risk assessment is carried out through four stages, namely hazard identification, hazard characterization, exposure assessment, and risk characterization. Another advantage is that will predict and prevent the level of consumption of various rice and seafood that can cause health risks. IAs poisoning in seafood products was a mass case in Indonesia in 2016 due to contamination of shellfish consumed by Makassar residents. The study is expected to provide benefits in the form of information regarding the risk of As and iAs in rice and seafood consumed by the population of office workers at PT XYZ. Therefore, it is necessary to conduct a risk assessment of the level of exposure and the significance of As and iAs in food products that most likely contain As and iAs, namely rice products and seafood. The result in this study shows that the EDI value for 95th percentile and maximum consumption is high, indicating that rice and seafood are not safe for 11 and 16 from 255 office workers at PT XYZ respectively, because it exceeds the Tolerable Daily Intake (TDI) value for inorganic arsenic that is 0,43 μg/kg body weight per day. The risk percentage value obtained in rice based on the 95% percentile value is 174,42%. The 5% of the total population with the highest risk percentage of consuming seafood has a value of 123,26%. At the 95th percentile and the maximum value has the risk percentage greater than 100%, particularly seafood consumed by male, female and total population. The primary factor that had the most influence in determining EDI based on the results of sensitivity analysis, particularly containing high concentration of inorganic arsenic in seafood and high amount consumption of rice were responsible for the majority of the high EDI values in this study.