ABHIBHAWA, ARIO (2022) STATUS PENCEMARAN LOGAM BERAT Pb PADA AIR DI SUNGAI BABON SEMARANG (22m326). Undergraduate thesis, Universitas Diponegoro.

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Abstract

ABSTRAK
Ario Abhibhawa. 26010117120010. Status Pencemaran Logam Berat Pb Pada Air di
Sungai Babon Semarang. (Bambang Sulardiono dan Arif Rahman)
Pencemaran air merupakan perubahan kualitas perairan menjadi buruk hingga dibawah
baku mutu yang telah ditetapkan dan yang memiliki dampak negatif bagi biota
perairan tersebut. Sungai Babon merupakan DAS yang berada disebelah timur Kota
Semarang, membawa berbagai macam limbah domestik dan industry. Salah satu jenis
cemaran di perairan yang berasal dari kegiatan domestik maupun industri adalah
logam berat timbal (Pb) yang memiliki sifat toksik bagi biota perairan. Tujuan dari
penelitian ini adalah mengetahui kadar logam berat timbal (Pb) dan status mutu air
Sungai Babon. Penelitian ini dilaksanankan pada bulan September-November 2021
menggunakan purposive sampling yang merupakan teknik sampling untuk
menentukan lokasi pengambilan sampel. Lokasi pengambilan sampel dilakukan pada 3
stasiun di Sungai Babon yaitu pada bagian hulu, tengah dan hilir. Variabel yang
digunakan dalam penelitian ini adalah logam berat timbal (Pb), DO, pH, Suhu, dan
TSS. Analisa data menggunakan metode indeks pencemaran (IP). Analisis logam
berat timbal (Pb) menggunakan alat Atomic Absorption Spectrophotometer (AAS).
Hasil penelitian menunjukkan kandungan logam berat timbal (Pb) pada air berkisar
0,27-0,43 mg/L. Kadar DO memiliki nilai rata- rata 4,97 mg/l. pH air memiliki nilai
7,30. Suhu air memiliki nilai rata-rata 29,38. TSS air memiliki nilai rata-rata 109,94
mg/L. Status mutu air Sungai Babon menggunakan metode indeks pencemaran
tergolong tercemar ringan.
Kata kunci: Logam Berat Timbal (Pb), Pencemaran Air, Sungai Babon

ABSTRACT
Ario Abhibhawa. 26010117120010. Status of Pb Heavy Metal Pollution in Water in
Babon River Semarang. (Bambang Sulardiono dan Arif Rahman)
Water pollution is a change in water quality to be bad to below the quality
standard that has been set and which has a negative impact on the aquatic biota.
Babon River is a watershed located east of Semarang City, carrying various kinds of
domestic and industrial waste. One type of contamination in waters originating from
domestic and industrial activities is heavy metal lead (Pb) which has toxic properties
for aquatic biota. The purpose of this study was to determine the levels of heavy metal
lead (Pb) and the water quality status of the Babon River. This research was
conducted in September-November 2021 using purposive sampling which is a
sampling technique to determine the location of sampling. Sampling locations were
carried out at 3 stations on the Babon River, namely upstream, middle and
downstream. The variables used in this study were heavy metal lead (Pb), DO, pH,
temperature, and TSS. Data analysis used the Pollution Index (IP) method. Analysis of
heavy metal lead (Pb) using the Atomic Absorption Spectrophotometer (AAS). The
results showed that the heavy metal content of lead (Pb) in the water ranged from 0.27
to 0.43 mg/L. DO levels have an average value of 4.97 mg/l. The pH of the water has a
value of 7.30. The water temperature has an average value of 29.38. The TSS of
water has an average value of
109.94 mg/L. The water quality status of Babon River using the pollution index
method is classified as lightly polluted.
Keywords: Babon River, Heavy Metal Lead (Pb), Water Pollution

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