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All Journal Jurnal Riset Sains dan Kimia Terapan
Mardiana Saaid
School of Chemical Sciences, Universiti Sains Malaysia, 11800 Minden, Penang, Malaysia
Chemistry

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Revealing the Role of Mobile Phase Composition and pH in Benzoic Acid Analysis of Beverages and Processed Foods: Implications for SDG 3 Vida Zenitha Sudariasri; Meyliana Wulandari; Galuh Fathin Aulia; Susy Affrini Hutapea; Mardiana Saaid
Jurnal Riset Sains dan Kimia Terapan Vol. 12 No. 1 (2026): Jurnal Riset Sains dan Kimia Terapan, Volume 12 Nomor 1, Juni 2026
Publisher : Program Studi Kimia Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/JRSKT.121.01

Abstract

To prevent health risks in excessive consumption, monitoring benzoic acid as a food additive is necessary in line with SDG 3 principles. Conventional methods for determining benzoic acid levels have limitations in selectivity and sensitivity due to matrix interference contained in food products. This study aims to determine benzoic acid levels in support of food safety monitoring in Jakarta by optimizing the mobile phase in a reversed-phase HPLC system (RP-HPLC. Reverse-phase high-performance liquid chromatography with a UV detector, investigated in this research, operated at 225 nm. A C-18 or octadecyl silica (ODS) column stationary phase (250 mm x 4,6 mm, 5 µm particle size) was used, which is classified as nonpolar. The mobile phase used is a polar methanol-phosphate buffer with a ratio 4:96 at pH 6.8. Optimization of mobile phase composition and pH was necessary to control the ionization degree of benzoic acid, improve analyte‒stationary phase interactions, and produce optimal retention time, peak shape, and resolution. The test results for benzoic acid levels in carbonated drinks, jelly drinks, and mayonnaise were 140.973 mg/kg, 232.294 mg/kg, and 710.695 mg/kg, respectively. It can be concluded that the benzoic acid levels in the sample remain below the maximum limit set by BPOM RI.
Evaluation of Hospital Wastewater Quality in Supporting the Achievement of SDG 6: a Case Study in Central Lampung Regency M. Akbar Rizki Al-Fadhilah; Rini Andriani; Meyliana Wulandari; Mardiana Saaid
Jurnal Riset Sains dan Kimia Terapan Vol. 9 No. 2 (2023): Jurnal Riset Sains dan Kimia Terapan, Volume 9 Nomor 2, Desember 2023
Publisher : Program Studi Kimia Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/JRSKT.092.07

Abstract

Achieving Sustainable Development Goal (SDG) 6 on access to clean water and adequate sanitation requires effective wastewater management, including from healthcare facilities such as hospitals. Hospitals have the potential to generate wastewater containing organic and inorganic contaminants, as well as pathogenic microorganisms, which can pose a risk of environmental pollution if not properly treated. This study aims to evaluate the quality of wastewater produced by a hospital in Central Lampung Regency based on the quality standard parameters stipulated in the Regulation of the Minister of Environment and Forestry of the Republic of Indonesia Number 68 of 2016. The parameters tested include pH, Total Suspended Solid (TSS), Chemical Oxygen Demand (COD), Biochemical Oxygen Demand (BOD₅), fatty oil, and total ammonia. The test results showed that the pH value was 6.98; TSS 3.00 mg/L; COD 43.28 mg O₂/L; BOD₅ 1.22 mg/L; fatty oil 0.3 mg/L; and total ammonia 0.191 mg/L. All parameters were well below the maximum quality limits for hospital wastewater. These findings indicate that the hospital's wastewater treatment plant (WWTP) is functioning correctly, resulting in safe wastewater and no potential environmental pollution. This evaluation supports efforts to meet SDG indicator 6.3, which focuses on improving wastewater treatment and reducing water pollution
Co-Authors Galuh Fathin Aulia M. Akbar Rizki Al-Fadhilah Meyliana Wulandari Rini Andriani Susy Affrini Hutapea Vida Zenitha Sudariasri