Air pollution analysis of a leaf of a holm oak (Quercus ilex). The leaf can be used to measure the amount of particulate matter present in the air where the tree is growing. This sample was part of a study of airborne particulate matter levels in the city of Rome,Italy. The leaf is cut into 4 millimetres squares,and subjected to a variety of tests to determine the size and mineralogy of the pollutant particles | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Szoenyi, Michael |
Bildgröße: | 3620 px × 2413 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |