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Volume 08 Journal of Community Medicine & Health Education Public Health Summit 2018
May 24-25, 2018
May 24-25, 2018 Osaka, Japan
4th World Congress on
Public Health, Epidemiology & Nutrition
Risk assessment andmanagement of Taiwan residents exposed to arsenic associatedwith rice consumption
Bo-Ching Chen
Nanhua University, Taiwan
Rice and rice products are staple foods in Asia. Rice grains may accumulate excess arsenic (As) when exposed to As-
contaminated soil. Therefore, it is important to assess potential human health risks through daily rice consumption. This
study aims to perform dietary As risk assessment to estimate the probability of As from contaminated soils entering local
residents. Field investigations were conducted in paddy rice fields in central Taiwan to determine the correlation between As
levels in soil and in brown rice. The ingestion rate of rice of local residents was also investigated. A probabilistic risk assessment
was then employed to estimate carcinogenic and non-carcinogenic risks of Taiwan residents via rice consumption. The result
showed that the mean total As concentration in soil was 44.96 mg kg-1, which was a little lower than the local risk-based limit
of As for soil used for food crop production (60 mg kg-1). The total daily intakes of inorganic As from rice consumption were
0.0002 and 0.0011 mg kg-1 day -1 for the 50 th and 95th percentiles, respectively. The assessment results show that the predicted 50 th
and 95th percentile for target cancer risks (TRs) were respectively 0.0003 and 0.0016, both markedly higher than the acceptable
target cancer risk of 10-4-10-6. To manage the health risk of local residents due to the ingestion of inorganic As from rice, our
results suggested that the regulation standard of As in farmland soil should be set below 15 mg kg-1 .
Biography
Bo-Ching Chen has completed his PhD at the age of 32 years from National Taiwan University. He is the full Professor of Master Program of Green Technology for
Sustanablity, and the Dean of College of Science and Technology, Nanhua University, Taiwan. He has published more than 40 papers in reputed journals.
Bo-Ching Chen, J Community Med Health Educ 2018, Volume 8
DOI: 10.4172/2161-0711-C2-036