SULISTYO, ANGGITA AL HARIS (2023) ANALISIS KUALITAS AIR DAN KANDUNGAN LOGAM BERAT TIMBAL (Pb) PADA AIR LAUT DI PERAIRAN PELABUHAN TANJUNG EMAS KOTA SEMARANG JAWA TENGAH (23dik120). Undergraduate thesis, Fakultas Perikanan dan Ilmu Kelautan.

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Abstract

ABSTRAK
(Anggita Al Haris Sulistyo. 26040119140151. Analisis Kualitas Air dan Kandungan Logam Berat Timbal (Pb) Pada Air Laut di Perairan Pelabuhan Tanjung Emas, Kota Semarang, Jawa Tengah. Jusup Suprijanto dan Bambang Yulianto).
Pelabuhan Tanjung Emas, Semarang, Jawa Tengah termasuk ke dalam salah satu fasilitas pelabuhan di Indonesia yang menaungi beberapa industri di dalamnya. Lokasi penelitian kali ini bertempat di salah satu fasilitas pelabuhan yaitu Dermaga Nusantara yang secara umum memiliki aktivitas pelabuhan seperti bongkar muat batu bara, pasir, dan log kayu menggunakan alat berat seperti Exavator dan Wheel Loader. Adanya banyak aktivitas pelabuhan dapat dikatakan sebagai faktor yang dapat mempengaruhi kualitas air dan kadar logam berat timbal (Pb) pada air laut di area Dermaga Nusantara. Analisis kualitas perairan menggunakan alat ukur thermometer digital, pH meter, DO meter, secchi disk, dan refractometer. Pengujian kandungan timbal (Pb) kemudian dilakukan di Laboratorium Teknik Lingkungan Universitas Diponegoro menggunakan alat Atomic Absorption Spectrophotometer (AAS). Hasil pengukuran suhu pada kisaran 30,5-32,2°C; nilai pH pada kisaran 6,35-7,56; nilai oksigen terlarut (DO) pada kisaran 5,22-8,51 mg/l; nilai kecerahan pada kisaran 3,18-3,52 meter; dan nilai salinitas pada kisaran 31-35 ppt. Hasil uji
kandungan timbal (Pb) yaitu pada kisaran 0,390 – 0,640 mg/l. Nilai pengukuran kualitas air tersebut masih tergolong memenuhi standar baku mutu, akan tetapi pada uji kandungan timbal hasil yang didapatkan masih melebihi standar baku mutu sesuai dengan Peraturan Pemerintah Nomor 22 Tahun 2021 Republik Indonesia tentang Penyelenggaraan Perlindungan dan Pengelolaan Lingkungan Hidup dan Keputusan Menteri Negara Lingkungan Hidup Nomor 51 Tahun 2004 tentang Baku Mutu Air Laut Pelabuhan.
Kata Kunci : Kualitas Air, Atomic Absorption Spectrophotometer (AAS), Logam Berat Timbal (Pb)

ABSTRACT
(Anggita Al Haris Sulistyo. 26040119140151. Analysis of Water Quality and Heavy Metal Lead (Pb) Content in Seawater in Tanjung Emas Port Waters, Semarang City, Central Java. Jusup Suprijanto and Bambang Yulianto).
Tanjung Emas Port, Semarang, Central Java is included in one of the port facilities in Indonesia which houses several industries in it. The research location this time is located at one of the port facilities, namely the Nusantara Pier which generally has port activities such as loading and unloading of coal, sand, and wood
logs using heavy equipment such as excavators and wheel loaders. The existence of many port activities can be regarded as a factor that can affect water quality and levels of heavy metal lead (Pb) in seawater in the Nusantara Pier area. Analysis of water quality using digital thermometers, pH meters, DO meters, secchi disks, and refractometers. Testing for lead (Pb) content was then carried out at the Diponegoro University Environmental Engineering Laboratory using an Atomic Absorption Spectrophotometer (AAS). Temperature measurement results in the range of 30.5-32.2°C; pH value in the range of 6.35-7.56; dissolved oxygen (DO) values in the range of 5.22-8.51 mg/l; brightness value in the range of 3.18-3.52
meters; and salinity values in the range of 31-35 ppt. The test results for lead (Pb) content were in the range of 0.390 – 0.640 mg/l. The water quality measurement value is still classified as meeting the quality standard, but the lead content test results obtained still exceed the quality standard according to Government Regulation Number 22 of 2021 of the Republic of Indonesia concerning the Implementation of Environmental Protection and Management and Decree of the Minister of State for the Environment Number 51 of 2004 concerning Port Sea Water Quality Standards.
Keywords : Water Quality, Atomic Absorption Spectrophotometer (AAS), Heavy Metal Lead (Pb)

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