【摘要】 对某铀冶炼厂附近生长的水稻、白菜、茶、柑桔食用部分以及这些植物生长区土壤中的放射性污染物U、226Ra、Th和非放射性污染物Mn2+、Cd、Cr、Pb的浓度进行了测定,并计算了相应的污染物生态转移参数(Bv值)。结果表明,稻米、白菜、桔子以及土壤中Cd的浓度超出标准,其余污染物的浓度没有超标;茶叶对污染物的Bv值相对较高,桔子对污染物的Bv值相对较低。更多还原

【Abstract】 This study was conducted to determine concentrations of uranium, radium, thorium and manganese, cadmium, chromium, lead in edible parts of rice (Oryza sativa), Chinese cabbage (Brassica pekinensis), tea (Camellia sinensis) and orange (Citrus reticulate) grown in an area as well as soil samples collected near a uranium smelter. In the same time, the ecologic transfer parameter (Bv value) of those pollutants was computed. The results showed that the concentrations of cadmium in rice, vegetable and orange also in soil exceeded the official standard. The Bv value of tea-leaf representing an absorbing capacity for pollutants was bigger than that of others; while Bv value of oranges was the least.更多还原