Park K S, Kim N B, Kim Y S, Lee K Y, Chun S K, Yoon Y Y
Korea Institute of Geology, Mining and Materials, Taejeon.
Biol Trace Elem Res. 1994 Fall;43-45:229-37. doi: 10.1007/BF02917320.
For a case study of environmental pollution, radiochemical neutron activation analysis (RNAA) was applied to the crucian and rice collected along the Han River. The crucian was analyzed for three times in 1973, 1987, and 1990. Sixteen trace elements (Hg, Cd, As, Br, Cu, Na, K, Se, Cr, Hf, Rb, Fe, Zn, Co, La, and Cs) were determined by RNAA using distillation and diethyldithiocarbamate extraction methods. Contents of Na, K, Se, Hf, Fe, Zn, and Co were almost constant regardless of the sampling place and year. The contents of the other elements showed increasing trends down river, especially in the first investigation. At the lower part of the river, the contents showed decreasing trends with the time of sampling, especially during the first two investigations. These trends were typical for Hg and Cd. Rice was analyzed by the same method for 12 elements, and the results showed no regional trends, but have decreased after 1973.
对于一个环境污染的案例研究，放射化学中子活化分析（RNAA）被应用于汉江沿线采集的鲫鱼和水稻。鲫鱼在1973年、1987年和1990年进行了三次分析。采用蒸馏和二乙基二硫代氨基甲酸盐萃取法，通过RNAA测定了16种微量元素（汞、镉、砷、溴、铜、钠、钾、硒、铬、铪、铷、铁、锌、钴、镧和铯）。钠、钾、硒、铪、铁、锌和钴的含量几乎不受采样地点和年份的影响。其他元素的含量在下游呈上升趋势，尤其是在首次调查中。在河流下游，含量随采样时间呈下降趋势，尤其是在前两次调查期间。汞和镉的情况就是典型的这种趋势。水稻采用相同方法分析了12种元素，结果显示没有区域趋势，但在1973年之后有所下降。
