Ziziphus spina-christi leaves as a biomonitoring tool in Doha, Qatar.

The leaves of Ziziphus spina-christi were evaluated as a bioindicator for air pollution. The analysis concentrated on the increased metal concentrations present on the leaf surface. The dust accumulated on the leaves of Ziziphus spina-christi was analyzed for various elements, including aluminum (Al), barium (Ba), cadmium (Cd), chromium (Cr), copper (Cu), calcium (Ca), iron (Fe), potassium (K), magnesium (Mg), manganese (Mn), lead (Pb), and zinc (Zn), utilizing Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES). ArcGIS facilitated the mapping of the spatial distribution of metal concentrations.