高原鼢鼠和高原鼠兔骨骼中非必需微量元素的测定

铅、镉、砷、汞、锑和铋等元素是人与动物生命活动非必需且有害的微量元素[1] 。哺乳类动物体内的这些微量元素主要由食物链传递所产生[2 ,3] 。本文对高原鼢鼠 (Ｍｙｏｓｐａｌａｘｂａｉｌｅｙｉ)和高原鼠兔(Ｏｃｈｏｔｏｎａｃｕｒｚｏｎｉａｅ)骨骼中非必需微量元素砷、锑、汞、铋、铅、镉的分布、种间含量差异及其相关性进行了分析和讨论 ,为高寒草甸生态系统研究小哺乳动物的营养生态学、化学生态学以及生态系统的物质循环[4 ,5] 等提供基础资料。1　材料与方法1 1　样品预处理1994年 5～ 6月在中国科学院海北高寒草甸生态系统定位站…

Studies on the Unessential Trace Elements in Skeletons of Plateau Zokor and Plateau Pika

The contents and distributions of six unessential elements were analyzed in the whole bone, cranium, backbone, and leg bone of plateau zokor ( Myospalax baileyi ) and plateau pika ( Ochotona curzoniae ). These trace elements are Pb, Cd, As, Sb, Bi, and Hg. The results indicated that the contents of Pb, Cd, As, Bi and Hg in skeleton of plateau zokor are higher than that in skeleton of plateau pika with significant differences in Pb, Bi, and Hg. The contents of Hg and Cd between plateau zokor and plateau pika are significantly correlated while the contents of Sb and Bi are less correlated. In the skeletons of plateau zokor and plateau pika, the distributions of Hg, Pb, As, and Bi are mostly in the head bones, leg bones, backbones, and backbones, respectively. The contents of these six unessential trace elements in skeletons are related to not only to their ecological environments and food but also the cooperation and antagonism among these elements.