A new technique for Biological Monitoring ―A new Index for Evaluation of Lead Pollution

摘要

Biological monitoring using wildlife is one of useful method for investigation of the degree of environmental contamination. Thus, there are many reports describing about contamination by various pollutant such as heavy metals, chlorinated organic compound in the studies using wildlife. However, since there is alack of epidemiological aspects in the studies using wildlife, the researchers cannot make effective use of the obtained data from wildlife. For example, since the amount of Cd in animals increases with ageing, the knowledge of the age of the animals is necessary to understand the degree of Cd contamination in target animals accurately. However, the identification of the age of the wildlife is sometimes difficult. Further, there is a lack ofepidemiological aspects such as sex, feeding habits, and the degree of contamination of the habitat. Thus, it was thought that the setup of a normal control group is very difficult for the studies using wildlife.