Pollution Research Paper

Vol 40, Issue 2, 2021; Page No.(444-449 )

MONITORING OF ENVIRONMENTAL POLLUTION FOR PB, CD AND CR ELEMENTS USING THE FEATHERS OF THREE SPECIES OF BIRDS

ASAAD SH. M. ALHESNAWI

Abstract

Despite the efforts made in most countries of the world to reduce the risks of environmental pollution, heavy elements still represent the most important environmental pollutants. Therefore this study was conducted with the aim of evaluating the use of feathers of three species of locally dominant birds, Columba livia, Spilopelia senegalensis and Passer domesticus, as a biomonitor for pollution by lead, cadmium and chromium. Samples were collected from 108 birds with an average of 38 birds of each species in two areas: urban and rural. All samples were analyzed using an atomic absorption spectrometer. The results showed higher concentrations of lead compared to cadmium and chromium in all samples, and higher concentrations of these elements in the urban area compared to the reference area in washed and unwashed feathers. The results of the statistical analysis showed significant differences for all elements between the two areas for unwashed feathers, which was attributed to the fact that unwashed feathers effectively reflect the state of external pollution. The presence of these elements in bird feathers and in high concentrations indicates a potential threat to the life of birds and other living things. Based on the results of this study, feathers can be used for any species of bird studied, and it is an effective tool for monitoring environmental pollution with heavy elements.