Nagatsuka S, Tanizaki Y
Radioisotopes. 1981 May;30(5):253-7.
An instrumental neutron activation analysis was applied to the multielemental analysis of the Stenopsyche griseipennis taken from the head water area and the lower of Tama river. The dry Stenopsyche griseipennis were irradiated for 3 minutes and 12 hours in a thermal neutron flux 1.5 X 10(12) n . cm-2 . sec-1 of TRIGA-II reactor of Rikkyo University. Thus, Al, Ca, Cl, Mg, V, Na, K, Br, La, Sm, Se, Cr, Ba, Cs, Sc, Rb, Zn, Co, Fe, and Sb could be analyzed. Analysis of the river water samples taken from the sampling points of the Stenopsyche griseipennis was carried out by the method given in the author's previous paper. The analytical results of Na, K, Zn and Se for the Stenopsyche griseipennis showed constant value independently of the river water quality, and Mn showed the different concentration between at the head water area and at the lower. On the other hand, the analytical results of Al, Fe, Sc, V, As, Sb, etc. showed wide range values. It can be considered that these elements were affected by taking up river sediment, and V, As and Sb concentrations in the Stenopsyche griseipennis at head water area showed larger values than those at the lower.
采用仪器中子活化分析法对取自多摩河上游水域和下游的灰翅石蛾进行多元素分析。将干燥的灰翅石蛾在立教大学TRIGA-II反应堆热中子通量为1.5×10¹² n·cm⁻²·s⁻¹的条件下辐照3分钟和12小时。由此，可以分析铝、钙、氯、镁、钒、钠、钾、溴、镧、钐、硒、铬、钡、铯、钪、铷、锌、钴、铁和锑。取自灰翅石蛾采样点的河水样本分析按照作者先前论文中给出的方法进行。灰翅石蛾中钠、钾、锌和硒的分析结果显示出恒定值，与河流水质无关，而锰在河流上游水域和下游的浓度不同。另一方面，铝、铁、钪、钒、砷、锑等的分析结果显示出较宽的取值范围。可以认为这些元素受到摄取河流沉积物的影响，河流上游水域灰翅石蛾中钒、砷和锑的浓度高于下游。
