Electronic Theses and Dissertation

Telah dilakukan penelitian tentang kandungan logam berat timbal pada sedimen dan bentos di ekosistem mangrove Deah Glumpang, Kota Banda Aceh. Tujuan penelitian ini adalah untuk mengetahui kandungan logam berat timbal pada sedimen dan bentos di Deah glumpang, Kota Banda Aceh. Penelitian ini dilakukan pada bulan Juli – Agustus 2023. Pengambilan sampel sedimen dilakukan menggunakan metode Purposive Sampling menggunakan pipa paralon dengan panjang 10 cm dan diameter 2,5 inch. Pengambilan sampel bentos menggunakan transek yaitu diambil sebanyak 1 spesies sampel bentos di setiap stasiun. Kadar logam timbal pada sampel sedimen dianalisis menggunakan Atomic Absorption Spectrophotometer (AAS) di Laboratorium Lingkungan Prodi Teknik Kimia Fakultas Teknik Universitas Syiah Kuala. Hasil analisis kandungan logam berat timbal pada sedimen di lapisan atas paling tinggi pada stasiun 3 sebesar 0,906 mg/kg dan terendah pada stasiun 1 sebesar 0,167 mg/kg, menunjukkan bahwa sedimen pada ekosistem mangrove di Meuraxa, Kota Banda Aceh belum tercemar logam berat timbal menurut US-EPA (United States Environmental Protection Agency) tahun 2004. Sedangkan, hasil pengamatan pada bentos ditemukan 3 spesies bentos yang berbeda pada setiap stasiun yaitu pada stasiun 1 ditemukan spesies Mactra Grandis, pada stasiun 2 ditemukan Anadara Gibbosa, dan pada stasiun 3 ditemukan Terebrelia palustris. Hasil kandungan logam berat pada bentos hanya ditemukan pada stasiun 3 yaitu spesies Terebralia palustris sebesar 0,161 mg/kg, menunjukkan bahwa bentos pada ekosistem mangrove di Meuraxa, Kota Banda Aceh Sudah melewati baku mutu yang ditetapkan oleh Peraturan pemerintah Indonesia No. 22 Tahun 2021.
Kata Kunci : Atomic Absorption Spectrophotometer (AAS), logam berat, sedimen, timbal, bentos.

A study was conducted on the heavy metal content of lead in sediments and benthos in the mangrove ecosystem of Deah Glumpang, Banda Aceh City. The purpose of this study was to determine the content of heavy metal lead in sediments and benthos in Deah Glumpang, Banda Aceh City. This research was conducted in July - August 2023. Sediment sampling was conducted using purposive sampling method using a pipe with a length of 10 cm and a diameter of 2.5 inches. Benthic sampling using transect that is taken as much as 1 benthic sample species at each station. Lead metal levels in sediment samples were analyzed using Atomic Absorption Spectrophotometer (AAS) in the Environmental Laboratory of Chemical Engineering Study Program, Faculty of Engineering, Syiah Kuala University. The results of the analysis of heavy metal lead content in sediments in the upper layer was highest at station 3 at 0.906 mg/kg and lowest at station 1 at 0.167 mg/kg, indicating that sediments in the mangrove ecosystem in Meuraxa, Banda Aceh City have not been polluted by heavy metals lead according to the US-EPA (United States Environmental Protection Agency) in 2004. Meanwhile, the results of observations on benthos found 3 different benthic species at each station, namely at station 1 found Mactra Grandis species, at station 2 found Anadara Gibbosa, and at station 3 found Terebrelia palustris. The results of heavy metal content in benthos were only found at station 3, namely the Terebralia palustris species of 0.161 mg / kg, indicating that benthos in the mangrove ecosystem in Meuraxa, Banda Aceh City has exceeded the quality standards set by Indonesian government regulation No. 22 of 2021. Keywords: Atomic Absorption Spectrophotometer (AAS), heavy metals, sediment, lead, benthos.