Rauf, Anjas Geofani (2023) Pengembangan Metode Analisis Kadar Nitrit Berdasarkan Reaksi Pengkuplingan dengan α-Nafthilamin secara Spektrofotometri UV-Vis pada Air Minum Isi Ulang Wilayah Mojosongo. Other thesis, Universitas Setia Budi.
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Abstract
Depot air minum isi ulang telah menyebar luas, sejalan dengan
kebutuhan masyarakat terhadap air minum yang berkualitas serta aman
untuk diminum. Syarat kualitas air minum secara kimiawi terhadap
kandungan nitrit dalam air minum memiliki batas maksimum yaitu 3
mg/L. Penelitian ini bertujuan untuk mengetahui kandungan nitrit dalam
air minum isi ulang di daerah Mojosongo, Surakarta.
Metode yang digunakan pada penelitian ini adalah
spektrofotometri Uv-Vis dengan pereaksi Griess menggunakan senyawa
pengkupling α-nafthilamin. Nitrit dalam suasana asam akan bereaksi
dengan asam sulfanilat dan α-nafthilamin membentuk senyawa azo
berwarna merah keunguan. Kemudian dilakukan Uji validasi metode
meliputi uji linearitas, LOD & LOQ, Presisi, Sensitifitas, dan Akurasi.
Dilanjutkan analisis kualitatif dan kuantitatif pada air minum isi ulang
kemudian di analisis data.
Hasil penelitian ini menunjukkan modifikasi metode yang
optimal dalam menentukan kadar nitrit dalam sampel air minum yaitu
dengan menggunakan senyawa pengkupling α-nafthilamin 0,7%.
Diperoleh nilai linearitas 0,999, nilai LOD dan LOQ yaitu 0,008 dan
0,024. Nilai sensitifitas 1,371, nilai presisi 1,67% dan nilai akurasi
100,1%. Kemudian dilanjutkan penetapan kadar pada depot air minum
isi ulang menggunakan metode modifikasi α-nafthilamin 0,7% diperoleh
kadar nitrit masing-masing depot yaitu 0,087 mg/L, 0,096 mg/L dan
0,079 mg/L.
Refill drinking water depots have become widespread, in line
with the community's need for quality drinking water that is safe to drink.
The chemical requirements for drinking water quality for the nitrite
content in drinking water have a maximum limit of 3 mg/L. This study
aims to determine the content of nitrite in refill drinking water in the
Mojosongo area, Surakarta.
The method used in this study was spectrophotometry Uv-Vis
with Griess reagent using α-naphthylamine coupling compound. Nitrites
in an acidic environment will react with sulfanilat acid and α
naphthylamine to form purplish-red azo compounds. Then a method
validation test was carried out including linearity tests, LOD & LOQ,
Precision, Sensitivity, and Accuracy. Followed by qualitative and
quantitative analysis on refill drinking water and then data analysis.
The results of this study indicate an optimal modified method for
determining nitrite levels in drinking water samples using a 0.7% α
naphthylamine coupling compound. The obtained linearity value was
0.999, with LOD and LOQ values of 0.008 and 0.024, respectively. The
sensitivity value was 1.371, precision was 1.67%, and accuracy was
100.1%. Subsequently, the determination of nitrite levels was conducted
in refillable drinking water depots using the modified method with 0.7%
α-naphthylamine, resulting in nitrite levels of 0.087 mg/L, 0.096 mg/L,
and 0.079 mg/L for each depot.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | air minum isi ulang, nitrit, α-nafthilamin, spektrofotometri uv-vis. Refill drinking water, nitrite, α-naphthyilamine, spectrophotometry uv-vis . |
| Subjects: | R Medicine > RA Public aspects of medicine > RA0421 Public health. Hygiene. Preventive Medicine R Medicine > RS Pharmacy and materia medica |
| Divisions: | Universitas Setia Budi > Fakultas Farmasi > S1 Farmasi |
| Depositing User: | Unnamed user with email baa.si@setiabudi.ac.id |
| Date Deposited: | 23 Feb 2026 00:47 |
| Last Modified: | 23 Feb 2026 00:47 |
| URI: | https://eprints.setiabudi.ac.id/id/eprint/479 |
