Absorption of Cadmium (Cd) Metal Particulates on Tanjung (Mimusops Elengi) and Bungur (Lagerstroemia Speciosa) Leaves
Keywords:
Tanjung, Bungur, Plant, Particulate, Cadmium, AbsorptionAbstract
Selection of the right road shade plants can help maintain urban air quality. In this study, the absorption pattern of
Tanjung (Mimusops elengi) and Bungur (Lagerstroemis speciosa) plants for cadmium metal particulate matter
deposited on the leaf surface was observed. Sampling was carried out 3 times in the dry season with an interval of 10
days. The sampling point is on the edge of the highway, taking 3 locations which are each about 600 m apart. Leaf
samples were taken at a height of 3, 6, and 9 m. The particulate samples in the leaves were destroyed and then analyzed
for cadmium content using Atomic Absorption Spectrophotometer (AAS). The results showed that the average
particulate deposited on the surface of Tanjung leaves was 1,210.20 g/g leaf weight, while on Bungur leaves it was
only 965.90 g/g leaf weight. This happens because the composition of the Tanjung leaves is more dense with a circular
crown and branching than the Bungur leaves. Although the particulate weight in Tanjung leaves was higher, the
average Cd content in particulates was lower at 0.00124 g/g leaf weight, while in Bungur leaves it was 0.00176 g/g
leaf weight. It is suspected that Tanjung leaves have a faster Cd absorption rate than Bungur leaves. This was
confirmed by the higher average Cd content in Tanjung leaves, which was 0.00157 g/g leaf weight, while Bungur
leaves were 0.00136 g/g leaf weight. It can be concluded that the Tanjung plant captures more particulate matter than
Bungur leaves, except in the railroad track area where periodic vibrations often occur. The leaves of the Tanjung plant
also absorb Cd metal faster from the particulates that deposited on it than the leaves of Bungur.
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