Critique of Crop Eradication in Serpentinite Geological Formation Area Based on Risk Assesment

• Main Authors: CHEN,ROU-YU, 陳柔妤
• Other Authors: WU,TING-NIEN
• Format: Others
• Language: zh-TW
• Published: 2018
• Online Access: http://ndltd.ncl.edu.tw/handle/zdyngn

碩士 === 崑山科技大學 === 環境工程研究所 === 106 === In this study, Chih-Shang County was selected as study area to evaluate the requirement of crop eradication in serpentinite geological formation area based on health risk assessment of local residential exposure. The calculation results of health risk assessment are 3.92*10-7 for human carcinogenic rick, 3.77*10-1 for human non-carcinogenic rick, 5.87*10-8 for children carcinogenic rick and 9.63*10-1 for children non- carcinogenic risk. The non-carcinogenic risk resulted from the uptake of unpolished rice is higher than polished rice. The uptake of unpolished rice 2.07 kg/day for human and 0.48 kg/day for children might have potential non-carcinogenic risk, which are 12.1 times of human’s normal uptake and 3.7 times of children’s normal uptake. In reality, there is no potential carcinogenic or non-carcinogenic risk when human and children exposed to such air and soil surroundings in long-term or uptake high Cr-containing and Ni -containing rice, called serpentinite rice. Thus, it won’t be necessary to regulate and remediate high Cr-containing and Ni -containing soils in serpentinite geological formation area, and crop eradication can be waived due to no sufficient evidence of safety concerns regarding uptake serpentinite rice.