Kandungan Logam Berat Timbal (Pb) Dan Tembaga (Cu) Pada Akar Dan Buah Mangrove Avicennia marina Di Perairan Tanjung Emas Semarang

Received: 27 May 2016; Published: 27 May 2016.
Open Access Copyright (c) 2016 Jurnal Kelautan Tropis


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Abstract

Perairan Tanjung Emas merupakan salah satu kawasan pesisir yang dekat dengan aktivitas pelabuhan, industri, dan pemukiman penduduk. Tingginya aktivitas di kawasan Tanjung Emas diduga mengalirkan berbagai limbah yang dapat menimbulkan pencemaran, antara lainpencemaran oleh logam berat Pb dan Cu. Penelitian ini bertujuan untuk mengetahui kandungan logam berat Pb dan Cu dalam air, sedimen, akar, dan buah mangrove Avicennia marinaserta untuk mengetahui tingkat akumulasi terhadap logam-logam tersebut. Metode yang digunakan dalam penelitian ini adalah metode deskriptif dan penentuan lokasi penelitian dilakukan dengan metode purposive sampling. Kemudian logam berat dianalisis menggunakan AAS (Atomic Absorbtion Spectrophotometry). Hasil penelitian menunjukan bahwa kandungan logam berat Pb dan Cu di perairan Tanjung Emas Semarang menunjukkan pencemaran berat karena sudah melebihi batas ambang yang ditentukan yaitu masing-masing 0,01-0,06 mg/L (Pb) dan 0,004-0,14 mg/L (Cu). Kandungan Cu pada sedimen sebesar 1,236-3,212 mg/kg; Cu pada akar2,104-2,529 mg/kg; dan Cu pada buah A. marina 1,640-4,336 mg/kg.Hampir semua hasil ini lebih tinggi bila dibandingkan dengan kandungan Pb pada sedimen 0,251-0,507 mg/kg; Pb pada akar 0,732-1,625 mg/kg; dan Pb pada buah A. marina 0,114-0,345 mg/kg.BCF akar tertinggi ditemukan pada logam Pb yaitu 1,443-6,474 dan TF buah tertinggi ditemukan pada logam Cu yakni 0,674-1,714.

Kata Kunci : Logam Berat Pb dan Cu, kolom air,sedimen, akar dan buah A.marina, BCF dan TF A. marina.


Tanjung Emas waters were one of the coastal areas near that port activities, industries, and residential areas. The high activities in the area of Tanjung Emas allegedly flowed various wastes that can cause pollution, that is heavy metal Pb and Cu. The aim of this research was to determine the content of heavy metals Pb and Cu in the waters, sediment, roots, and fruits of the mangrove Avicennia marina as well as to determine the level of accumulation for these metals. The method that was used in this research was descriptive method and the determination of the location of research area used purposive sampling method. Then, heavy metals were analysedusing AAS (Atomic Absorption Spectrophotometry). The results showed that the content of heavy metals Pb and Cu in the waters of Tanjung Emas Semarang showed heavy contamination because it exceeds thespecifiedthreshold is 0,01-0,06 mg/L (Pb) and 0,004-0,14 mg/L (Cu). The content of Cu in the sediments was 1,236-3,212 mg/kg; Cucontentat the root was 2,104-2,529 mg/kg; and Cu content in fruits of mangrove A. marina is 1,640-4,336 mg/kg. Almost all of these results was higher when compared with the content of Pb in sediments is 0,251-0,507 mg/kg; Pb at the root is 0,732-1,625 mg/kg; and Pb in A. marina fruits is 0,114-0,345 mg/kg. The BCF highest root was found in Pb is 1,443-6,474 and TF highest fruits found on the committal was 0,674-1,714.

Keywords : Heavy Metal Pb and Cu, in waters, Sediment, Roots and Fruit of A. marina, BCF and TFA. marina

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