SATYATMA WIJAYATNO, MUHAMMAD FARREL (2022) HUBUNGAN SILIKAT DAN TOTAL BAHAN ORGANIK SERTA SEBARANNYA DI MUARA SUNGAI BANJIR KANAL BARAT, SEMARANG (22o599). Undergraduate thesis, Universitas Diponegoro.

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Abstract

ABSTRAK
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Muhammad Farrel Satyatma Wijayatno. 260 501 18 120 045. Hubungan Silikat
dan Total Bahan Organik Serta Sebarannya di Muara Sungai Banjir Kanal Barat,
Semarang (Muslim, Warsito Atmodjo)
Muara sungai Banjir Kanal Barat mengakumulasi silikat dan bahan organik yang
berasal dari dataran tinggi dan buangan aktivitas antropogenik. Silikat dan bahan
organik berkaitan dengan organisme primer perairan, khususnya diatom. Diatom
membutuhkan silikat dan menghasilkan pengayaan bahan organik. Tujuan
penelitian ini adalah mengetahui hubungan silikat dan bahan organik beserta
persebarannya. Penelitian ini menggunakan metode kuantitatif dengan analisis
statistik deskriptif sedangkan penentuan lokasi menggunakan purposive sampling.
Silikat dianalisis menggunakan metode molybdosilicate, bahan organik total air
menggunakan metode uji permanganat secara titrimetri (SNI 06-6989.22-2004),
bahan organik total sedimen menggunakan metode Loss on Ignition. Hubungan
menggunakan korelasi Pearson dan nilai signifikansi. Hasil menunjukkan
konsentrasi silikat lebih tinggi di permukaan (6,189 µM) daripada bagian dasar
(4,745 µM) serta sebarannya terpusat di sumber masukan perairan. Bahan organik
total air di permukaan (30,393 mg/L) menyebar dari sumber masukan muara
menuju ke arah barat muara mengikuti pergerakan arus. Bahan organik total air di
dasar perairan (31,744 mg/L) menyebar secara acak mengikuti ukuran butir
sedimennya. Bahan organik total di sedimen (16,687 %) menyebar bervariasi secara
acak dikarenakan pengaruh kecepatan arus dan persebaran ukuran butir sedimen.
Hubungan antara bahan organik dengan silikat perairan terjadi di bagian permukaan
perairan (r = 0,632; p = 0,037) sedangkan di dasar perairan tidak terjadi hubungan
(r = 0,395; p = 0,229).
Kata Kunci: Silikat; Bahan Organik Total; Muara; Sedimen; Diatom

ABSTRACT

Muhammad Farrel Satyatma Wijayatno. 260 501 18 120 045. Relationship and
Distribution of Silicate and Total Organic Matter in the West Flood Canal Estuary
River, Semarang (Muslim, Warsito Atmodjo)
The West Flood Canal estuary accumulates silicate and organic matter sourced
from the highlands and waste output from anthropogenic activities. Silicate and
organic matter are related to primary aquatic organisms, particularly diatom.
Diatom require silicate and resulting enrichment of organic matter. The purposes
of this study are to determine the relationship between silicate and organic matter
and their distribution. This study used a quantitative method with descriptive
statistical analysis while determining the location using purposive sampling.
Silicate is analyzed using the molybdosilicate method, total organic matter in water
using the titrimetric permanganate test method (SNI 06-6989.22-2004), and total
organic matter in sediments using the Loss on Ignition method. Relationships using
Pearson's correlation and significance value. The results show a higher silicate
concentration at the surface (6,189 µM) than at the bottom of waters (4,745 µM)
with distribution is centred on the inlet sources of waters. Total organic matter at
waters surface (30.393 mg/L) spreads from the inlet source to the west of the
estuary following the movement of the current. Total organic matter of the water at
the bottom (31.744 mg/L) spread randomly according to the grain size of the
sediment. Total organic matter in the sediment (16.687%) varies randomly due to
the influence of the sediment's current velocity and grain size distribution. The
relationship between organic matter and aquatic on waters occurs at the surface of
the waters (r = 0,632; p = 0,037) while at the bottom of the waters there is no
relationship (r = 0,395; p = 0,229).
Keywords: Silicate; Total Organic Matter; Estuary; Sediment; Diatom

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