THE ROLE OF DENDROBIUM SP. AS LEAD ABSORBENT ON THE SURABAYA PROTOCOL ROADS, INDONESIAHAMIDAH, SUCIPTO HARIYANTO, KARTIKA K. MUTMAINAH AND MANIKYA PRAMUDYAAbstract This study aimed to detemine the effect of lead content (Pb) on the density of stomata and lead (Pb) content on the leaves of Dendrobium sp. in several streets in Surabaya. Sampling was carried out at three locations with different levels of traffic density, at Campus C of Airlangga University, Walikota Mustajab Street, and Raya Darmo Street. Lead content testing was carried out using the Atomic Absorption Spectrophotometry (AAS) analysis method. The results showed that the average lead content in Dendrobium sp. leaves due to pollution exposure at Campus C of Airlangga University, Walikota Mustajab Street and Raya Darmo Street were 0.13 mg/kg, 0.17 mg/kg and 0.19 mg/kg respectively. The stomata density at Campus C of Airlangga University, Walikota Mustajab Street and Raya Darmo Streetwas also different. They were 30,37/mm2, 37,96/mm2, and 41,56/ mm2respectively. Correlation value obtained was 0.687. It meant that the relationship of lead content (Pb) in leaves to stomata density had correlation and positive effect. It showed that the the higher the lead content (Pb), the stomata density on Dendrobium sp. leaves would also increase. |