Department of Chemistry, University of Ibadan, Ibadan, Nigeria.
Environ Monit Assess. 1988 Jul;11(1):25-31. doi: 10.1007/BF00394509.
Heavy metal levels in top-soils, plant litter and mosses from uninhabited areas of southwest Nigeria were used to examine the gradients of metal contamination levels in the area. Correlations of metal levels between the different materials were poor. However, the highest levels of some of the metals were obtained in all the indicator materials within the higher pollution zones. Thus, the materials were all suitable for discerning the pollution zones.Higher levels of most metals were accumulated in mosses than in soil or litter within the lower and higher pollution zones. The extents of accumulation in the higher pollution zone relative to the lower pollution zone showed that the moss was not necessarily more effective in indicating the gradients in metal levels than the top-soil and plant litter.
利用尼日利亚西南部无人居住地区的表土、植物凋落物和苔藓中的重金属水平来检测该地区金属污染水平的梯度。不同材料之间金属水平的相关性很差。然而，在所有高污染区的指示材料中，一些金属的最高水平都有所升高。因此，这些材料都适合辨别污染区。在低污染区和高污染区，大多数金属在苔藓中的积累水平都高于土壤或凋落物。与低污染区相比，高污染区的积累程度表明，苔藓在指示金属水平梯度方面并不一定比表土和植物凋落物更有效。
