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ANALISIS POLA SEBARAN LOGAM BERAT CHROMIUM (Cr) PADA SEDIMEN DASAR DI PERAIRAN PEKALONGAN (23dos59)

HARDIYANTI, MARSELINA (2023) ANALISIS POLA SEBARAN LOGAM BERAT CHROMIUM (Cr) PADA SEDIMEN DASAR DI PERAIRAN PEKALONGAN (23dos59). Undergraduate thesis, Fakultas Perikanan dan Ilmu Kelautan.

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Abstract

ABSTRAK
(Marselina Hardiyanti. 260 501 171 200 09. Analisis Pola Sebaran
Logam Berat Chromium (Cr) pada Sedimen Dasar di Perairan Pekalongan Aris
Ismanto dan Muh. Yusuf)

Sungai Banger dan Loji merupakan sungai yang terdapat pada Perairan
Pekalongan, Jawa Tengah, merupakan area yang dikelilingi oleh banyak aktivitas
industri garmen dan batik yang padat di sepanjang alirannya. Aktivitas industri
yang padat dapat menyebabkan terjadinya peningkatan konsetrasi logam berat di
sedimen dasar di perairan tersebut. Tujuan dilakukan penelitian ini adalah untuk
mengetahui dan menganalisis pola sebaran konsentrasi logam berat pada sedimen
dasar serta mengetahui jenis dan ukuran butir sedimen dasar di perairan tersebut.
Penelitian ini dibagi menjadi tiga tahap yaitu tahap pengambilan sampel
lapangan, tahap analisis sampel lapangan dan pemodelan dengan menggunakan
software Delft3D. Pengambilan data lapangan penelitian ini pada 19 April 2021
dan pengolahan data pada bulan April-Mei 2021. Analisis data yang dilakukan
berupa analisa logam berat Cr dengan metode SNI 4819:2013 pada sedimen,
analisa granulometri, analisis arah dan kecepatan lrus laut. Tahap pemodelan
menggunakan modul hidrodinamika flow, untuk memodelkan arah dan kecepatan
arus laut dilanjutkan dengan memodelkan sebaran Cr. Hasil penelitian
menunjukkan konsetrasi Cr di perairan Pekalongan berkisar antara 0,021-0,051
mg/kg, serta ukuran butir sedimen dasar yaitu pasir berlanau dan lanau berpasir.
Pola sebaran konsetrasi Cr searah dengan pola pergerakan arus yang terjadi di
perairan tersebut baik pada kondisi pasang maupun surut, yaitu saat kondisi
pasang arus bergerak dari Tenggara menuju Selatan dan saat surut kondisi surut
arus bergerak dari Barat Laut menuju Selatan.

Kata Kunci: Deflt3D, Perairan Pekalongan, Sedimen Dasar, Sebaran
konsentrasi Cr

ABSTRACT
(Marselina Hardiyanti. 260 501 171 200 09. Analysis of Distribution
Patterns of Heavy Metal Chromium (Cr) in Bottom Sediments in Pekalongan
Waters. Aris Ismanto dan Muh. Yusuf )

The Banger and Loji rivers were located in the coastal area of Pekalongan
waters, Central Java, which surrounded by Garment and Batik industrial that has
dense of activities along the streams. These dense industrial activities cause an
increase of heavy metal concentration in the coastal bed loads. Hence, the purpose
of this research was to analyse the distribution pattern of heavy metal concentration
during tidal currents condition and to determine the sediment types that found in
Pekalongan waters. This research were divided by three stages: field sampling,
analysis and modeling using Delft3D software. The field data acquisition was
carried out on the19
th
of April 2021 and data processing was done in April – May
2021. Analysis of Cr (Chromium) heavy metal data was carried out using SNI
4819:2013 method on sediments, granulometric analysis also the speed and
direction of current seas analysis. The Delft3D-Flow module were used for the
modelling stage to conduct the modelling of the speed and direction of current seas
that occur in Pekalongan waters, thereafter, we proceed the modelling distribution
of Cr concentration. Resulting in the concentration of Cr value ranged in 0,021 –
0,051 mg/kg which has silty sand and sandy silt sediment types. We find that the
distribution pattern of Cr concentration is in the same direction as the movement
pattern of tidal currents where during the high tide conditions the ocean currents
move from the Southeast to the South and at the low tide conditions the ocean
currents move from the Northwest to the South.
Keywords: Deflt3D, Pekalongan Waters, Sediments, Bed Loads, Distribution of Cr
Concentrations

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: Deflt3D, Perairan Pekalongan, Sedimen Dasar, Sebaran konsentrasi Cr. Pekalongan Waters, Sediments, Bed Loads, Distribution of Cr Concentrations
Subjects: Fisheries And Marine Sciences
Divisions: Faculty of Fisheries and Marine Sciences > Department of Oceanography
Depositing User: pancasila wati
Date Deposited: 05 Jan 2024 08:55
Last Modified: 05 Jan 2024 08:55
URI: https://eprints2.undip.ac.id/id/eprint/19810

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