Sri Yudawati Cahyarini


Lead is one of the most contaminant for the environment, which is resulted from aerosol, industry, automobile exhaust etc. Predominant source of emission is identified to be leaded gasoline. Detail historical and trend of lead content in the environment is necessary to describe, in order to monitor the quality of environment. This requires long time series lead data. Coral can provide this data through analyzing the lead content in its skeleton. This study aims to analyze the lead content in coral skeleton from different sites i.e. Bidadari and Jukung island, the Seribu islands reef complex. Lead content in the inshore (Bidadari island) and offshore (Jukung island) corals are compared. The result shows that variation of Pb content in the inshore coral from Bidadari island is stronger correlated with the river discharge variation than lead variation from the offshore P. Jukung coral. This represent that the anthropogenic lead from the main land of Jakarta and surrounding area influences the inshore coral than the offshore coral.


Timbal merupakan salah satu jenis polutan yang dapat dihasilkan karena emisi kendaraan bermotor, pabrik dan lain sebagainya. Bahan bakar kendaraan bermotor bensin (gasoline) teridentifikasi sebagai sumber dominan dari kandungan Pb di lingkungan. Untuk mengetahui kualitas lingkungan terhadap polutan timbal ini diperlukan data historis dari waktu ke waktu kandungan timbal baik di udara maupun di perairan. Karang mampu memberikan informasi historis kandungan Pb di perairan laut. Tujuan penelitian ini untuk menganalisis kandungan Pb dalam karang yang diambil dari beberapa lokadi di Kepulauan Seribu. Hasil yang diperoleh menunjukkan bahwa besaran debit sungai permukaan yang masuk ke wilayah perairan teluk Jakarta berpengaruh kuat terhadap kandungan Pb karang di perairan dalam (inshore) yaitu karang di Pulau Bidadari dibandingkan dengan karang yang dari wilayah laut terbuka (offshore) yaitu Pulau Jukung. Hal ini menggambarkan bahwa polutan Pb dari darat lebih kuat  mempengaruhi kondisi perairan inshore dibandingkan offshore.


Pb contaminant, coral skeleton, Seribu Islands.


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