Food security indices related to combined pollution of chromium and phenol in agricultural and marine ecosystem
1995
Zhou Qixing | Dai Limei | Zhu Yinmei (Zhejiang Agricultural Univ., Hangzhou 310029 (China))
Food security indices are urgently necessary in food production and human health in developing countries including China and are therefore discussed on the basis of a research involving combined pollution of Cr and phenol in soil-rice and sea water-prawn system. It indicated that the determination of food-security indices should consider two key elements; pollutants-organisms-environment relations (food chain mechanisms or types of food and ecosystems) and combined pollution (types and interactive modes of pollutants). Broadly speaking, food-security indices not only mean the minimization of pollutants in foods, but also include environmental significance of pollutants in ecosystems. As a result, the maximum allowable concentration of Cr and phenol in rice and prawns and the critical content of Cr and phenol in soil and sea water are suggested. The integration of these parameters may correctly reflect and express food security indices for CR and phenol
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