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MONITORING KADAR NITRIT DAN NITRAT PADA AIR SUMUR DI DAERAH CATUR TUNGGAL YOGYAKARTA DENGAN METODE SPEKTROFOTOMETRI UV-VIS (Monitoring of Nitrite and Nitrate Content in Ground Water of Catur Tunggal Region of Yogyakarta by UV-VIS Spectrophotometry)

https://doi.org/10.22146/jml.18784

Setiowati Setiowati(1*), Roto Roto(2), Endang Tri Wahyuni(3)

(1) Departemen Kimia, Fakultas dan Ilmu Pengetahuan Alam, Universitas Gadjah Mada, Sekip Utara Yogyakarta 55281 Indonesia
(2) Departemen Kimia, Fakultas dan Ilmu Pengetahuan Alam, Universitas Gadjah Mada, Sekip Utara Yogyakarta 55281 Indonesia
(3) Departemen Kimia, Fakultas dan Ilmu Pengetahuan Alam, Universitas Gadjah Mada, Sekip Utara Yogyakarta 55281 Indonesia
(*) Corresponding Author

Abstract


ABSTRAK

Metode analisis nitrit dan nitrat perlu dikembangkan untuk memonitor kualitas air minum. Kualitas air sumur untuk parameter nitrit dan nitrat dipengaruhi oleh kondisi lingkungan dan kedalaman air sumur.Penelitian ini bertujuan menganalisis nitrit dan nitrat menggunakan asam p-aminobenzoat (PABA) pada air sumur di daerah perkotaan Yogyakarta. Analisis nitrit didasarkan pada reaksi antara ion nitrit dengan PABA yang membentuk senyawa azo dengan panjang gelombang maksimum 546 nm. Kedalaman air sumur di daerah Catur Tunggal rata-rata > 10 m. Kadar nitrit dan nitrat pada air sumur adalah 0,05-0,09 dan 8,22-36,58 mg/L. Kadar nitrit dan nitrat tersebut memenuhi baku mutu dan aman untuk dikonsumsi. Konsentrasi nitrit dan nitrat pada air RO adalah 0,05 dan 2,72-59,57 mg/L. Kadar nitrit pada air RO tidak memenuhi baku mutu sedangkan kadar nitrat memenuhi baku mutu kecuali RO 5.


ABSTRACT

The method for analysis nitrite and nitrate had to developed to monitor the drinking water quality. The well water quality, especially for nitrite and nitrate were influenced by environmental conditions and depth of well. This study aims to analyze nitrite and nitrate using p-aminobenzoic acid (PABA) in ground water at urban areas of Yogyakarta. The analysis was based on the reaction between nitrite ions with PABA which form azo compounds with a maximum wavelength of 546 nm. The depth of wells at Catur Tunggal were more than 10 m. Concentration of nitrite and nitrate in well water were 0.05 to 0.09 and 8.22 to 36.58 mg / L. The concentrations met the standard for drinking water quality and was safe for consumption. The concentration of nitrite and nitrate in reverse osmosis (RO) water were 0.05 and 2.72 to 59.57 mg / L. The concentration of nitrite did not meet the standard for drinking water quality while the concentration of nitrate met the standard for drinking water quality except RO 5.


Keywords


air sumur; asam p-aminobenzoat; kualitas air minum; nitrat; nitrit; well water; p-aminobenzoat acid; quality of drinking water; nitrite; nitrate; water



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DOI: https://doi.org/10.22146/jml.18784

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