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All Journal VALENSI KOVALEN: Jurnal Riset Kimia
Solihat, Imas
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Chemical Engineering, Chemistry & Bioengineering Chemistry

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Leaching of Iron and Zinc into Food Simultant from Tin Can Packaging Lilis Sulistiawaty; Imas Solihat; Arie Pratama Putra
Jurnal Kimia Valensi Jurnal Kimia VALENSI Volume 5, No. 2, November 2019
Publisher : Syarif Hidayatullah State Islamic University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (843.927 KB) | DOI: 10.15408/jkv.v5i2.12526

Abstract

Cans are widely used as primary packaging in various food products. Ferrous (Fe) and zinc (Zn) metal as the constituent components in the manufacture of can packaging bodies can experience corrosion and dissolve in food so that it will affect food quality and finally affect to health. This study aimed to determine the content of Fe and Zn metal at different treatments (time) with 3% acetic acid and vegetable oil as food simulators on can packaging using Atomic Absorption Spectrophotometer (AAS). The results of the analysis showed that the range of Fe and Zn metal content in 3% acetic acid food simulants were respectively 0.15-27.46 mg/kg and 0.00060.007 mg/kg, while in vegetable oil simulants 3% Fe and metal content Zn were 0.6-2.46 mg/kg and 0.00040.0025 mg/kg with 80-100% recovery, respectively. Thus, food from can packaging should not be exposed to oxygen for a long time, especially when it has been opened because it will increase the leaching of Fe and Zn metals from the packaging into food.
Verifikasi Metode Pengujian Kadar Nitrit dalam Air Limbah Secara Spektrofotometri UV-Visibel: Verification of a UV-Visible Spectrophotometry Method for Analysis of Nitrite Levels in Wastewater Imas Solihat; Ardina Purnama Tirta; Agung Pratama Ramdani; Achmad Nandang Roziafanto
KOVALEN: Jurnal Riset Kimia Vol. 8 No. 1 (2022): April Edition
Publisher : Chemistry Department, Mathematics and Natural Science Faculty, Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/kovalen.2022.v8.i1.15756

Abstract

Wastewater is the residue from a business and or activity in the form of liquid. One of the chemical compounds that cause pollution is nitrite. The nitrite level in wastewater is a key parameter in determining water quality because of its toxicity. The standard method for nitrite analysis refers to SNI 06-6989.9-2004 using sulfanilic acid and N-(1-naphthyl)-ethylenediamine dihydrochloride (NED) reagents. Linearity, instrument detection limit (LDI) and quantification detection limit (LOQ), precision, accuracy, and calculation of measurement uncertainty estimation are some of the verification parameters that were tested. The regression curve's results showed that the correlation value (r) = 0.9998, the instrument detection limit value of 0.0014 mg/L, the quantitation limit value of 0.0035 mg/L, the precision value (%SBR) of 1.30 percent, the accuracy value is in the range (90-100)% and the relative uncertainty of 5.88 %. The verification results suggested that the UV-Visible spectrophotometer-based nitrite test technique in wastewater had passed the acceptance requirements and may be utilized for routine laboratory analysis.
Co-Authors Achmad Nandang Roziafanto Agung Pratama Ramdani Ardina Purnama Tirta Arie Pratama Putra Lilis Sulistiawaty