A new index for evaluation of cadmium pollution in birds and mammals
A new index for evaluation of cadmium pollution in birds and mammals
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DOI：
10.1007/s10661-007-9727-x
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发表时间：
2008-02-01
影响因子：
3
通讯作者：
Ueda, Fukiko
中科院分区：
文献类型：
--
作者：
Mochizuki, Mariko;Mori, Makoto;Ueda, Fukiko
野生动物体内镉污染程度是镉中毒环境监测中常用的指标。然而，以往的研究并未通过比较不同物种动物体内的浓度水平来澄清野生动物体内的浓度水平与环境中的浓度水平之间的相关性;因此，以这种方式评估污染程度并不被视为环境中浓度水平的可靠准确指标。本研究的目的是建立一个新的指示剂，为无污染的温血动物，一个是不依赖于物种，这将有助于使用不同的物种镉监测。首先，以前的出版物中关于镉含量的野生动物，27个报告中，镉含量表示为算术平均值，并描述了肾脏和肝脏。肾脏镉含量与肝脏镉含量呈直线回归关系，相关系数为0.943，P < 0.01。来自陆地和水禽、陆地哺乳动物、海鸟、海洋哺乳动物和未受污染的人类的平均值位于线上并按顺序排列。CSRL可能允许准确地确定动物是否受到Cd污染。CSRL被证实使用完善和广泛认可的污染模型，如Itai-itai患者和镉暴露的实验动物。镉含量从这些模型位于不同的位置相对于CSRL取决于污染水平。因此，这一新的指示剂确定镉污染状况的动物将是有用的环境监测。
The degree of cadmium (Cd) contamination in wildlife is often used as an indicator in the environmental monitoring of Cd poisoning. However, previous studies have not clarified the correlation between levels in wildlife and levels in the environment by comparing levels among different species of animals; therefore, assessing the level of pollution in this manner is not considered a reliably accurate indicator of levels in the environment. The aim of this study was to establish a new indicator for the non-polluted warm-blooded animals, one that is not species-dependent, which will facilitate using different species for Cd monitoring. First, the previous publications regarding Cd contents in wildlife, 27 reports in which Cd contents were represented as arithmetic means and described for both kidney and liver were selected. A regression line (CSRL) between Cd contents of kidney and that of liver was obtained in a high correlation coefficient (R-2 = 0.943, P < 0.01). The mean values from land and waterfowl, terrestrial mammals, seabirds, marine mammals, and non-polluted humans were located on the line and aligned in order. CSRL might allow an accurate determination of whether an animal is polluted by Cd. CSRL was confirmed using well-established and widely recognized pollution models such as Itai-itai patients and Cd-exposed experimental animals. The Cd contents from these models were located in different positions relative to CSRL depending on the level of contamination. Thus, this new indicator determining the Cd-pollution status of animals would be useful for environmental monitoring.