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Irwan Said
Chemistry Study Program, Mathematics And Sciences Division, Faculty Of Teacher Training And Education, Tadulako University, Palu, Mantikulore, 94148, Indonesia
Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Environmental Science Health Professions Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Medicine & Pharmacology Nursing Public Health Social Sciences Other

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Journal : Media Eksakta

 1 
ANALISIS KUALITAS AIR TANAH DI PETOBO Putri Hasanah; Irwan Said
Media Eksakta Vol 16 No 1 (2020)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (259.33 KB) | DOI: 10.22487/me.v16i1.731

Abstract

The purpose of this study was to determine groundwater quality based on parameters of pH, COD, and BOD levels. These parameters are in accordance with Government Regulation No. 82 the year 2001 that concern the management of water quality and control of water pollution. pH meter was used for pH measurement. For COD concentration, the titrimetric titration was used while the iodometric titration for BOD concentrations. The results showed that the pH value of water was 7.9, the COD level was 7.84 mg/L and the BOD level was 1.68 mg/L. According to Government Regulations No. 82 the year 2001, it states that the level of COD based on its class is 10 mg/L (class I), and BOD based on its class is 2 mg/L. Therefore, the result of the COD and BOD concentrations are below of class 1 standards, it means the groundwater quality for two parameters in the Petobo area is still suitable for daily use.
The Tingkat Kesadahan dan Uji Derajat Keasaman (pH) pada Air Tanah di Desa Mapane Tambu Kecamatan Balaesang Kabupaten Donggala Ishak Ishak; Minarni Rama Jura; Irwan Said; Sri Hastuti Virgianti Pulukadang
Media Eksakta Vol 18 No 2 (2022)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/me.v18i2.2345

Abstract

Research has been carried out on the level of hardness and the degree of acidity (pH) in groundwater in Mapane Tambu Village, Balaesang District, Donggala Regency. The purpose of this study was to determine the concentration of the water hardness level and the degree of acidity of the water, complexometric method was used to determine the level of water hardness using three samples and obtained the results of sample A 15.61 mg/L; sample B 9.40 mg/L and sample C 19.22 mg/L, with a total hardness level obtained an average value of 14.74 mg/L classified in the low hardness category. Then the degree of acidity (pH) was measured using the electrometric method with a (pH) meter with three variations of sample results and the results obtained were sample A 7.713; sample B 8,511; sample C 6.916. The determination of the degree of acidity (pH) of the water obtained in the three samples was in accordance with the regulation of PERMENKES Number 492/Menkes/Per/IV/2010 concerning the quality of clean water which was in the pH range of 6.5 - 6.8
Analisis kadar mineral mikro tembaga dan besi pada biji durian Ayu Lestari; Irwan Said
Media Eksakta Vol 19 No 1 (2023)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/me.v19i1.1112

Abstract

This study aims to determine the levels of copper and iron contained in durian seeds, determine the levels of copper and iron using Atomic Absorption Spectrophotometer (AAS). The results showed that the analysis of the water content of durian seeds obtained 37.382%, ash content 17.782% and mass 44.835%. Analysis of the iron content measured at the copper wavelength of 248,3 nm, at the wavelength of 249,2, the results obtained respectively 49.244 ± 116.076 mg/100g for copper and 66.495± 15.753 mg/100g for iron. The results of this study are expected to be one of the alternative food ingredients that can be processed into food to meet the copper and iron substances in the body.
Kandungan Magnesium, Kalium, Kalsium Dan Fosfor Pada Produk Pangan Dari Tepung Biji Durian Irwan Said; Baharuddin Hamzah; Jamaluddin Sakung; Purnama Ningsih; Poppy Fitra Wahyuni; Rezki Rezki
Media Eksakta Vol 19 No 1 (2023)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/me.v19i1.3663

Abstract

Durian seed flour can be used for the manufacture of food products such as sticks and steamed sponges. Sticks and steamed sponge cake are foods that many people like from children to adults.  Durian seed flour is rich in minerals including magnesium, potassium, calcium and phosphorus. This study aims to determine the content of magnesium, potassium, calcium and phosphorus in food products from durian seed flour using Atomic Absorption Spectrophotometer (SSA) and UV-Vis Spectrophotometry.   The results showed that the magnesium content in the sticks of durian seed flour with formulation 1 (0% durian seed flour) amounted to 84,053 mg/kg, formulation 2 (50% durian seed flour) amounted to 145,213 mg/kg and formulation 3 (100% durian seed flour) amounted to 142,313 mg/kg.  Potassium content on sticks from durian seed flour with formulation 1 (0% durian seed flour) of 1,186 mg/kg, formulation 2 (50% durian seed flour) of 1,863 mg / kg and formulation 3 (100% durian seed flour) of 1,693 mg/kg.  The calcium content in steamed sponge from durian seed flour with formulation 1 (0% durian seed flour) of 30.37 mg/kg, formulation 2 (50% durian seed flour) of 37.84 mg/kg and formulation 3 (100% durian seed flour) of 35.84 mg /kg. While the phosphorus content n steamed sponge from durian seed flour with formulation 1 (0% durian seed flour) of 17.1 mg/kg, formulation 2 (50% durian seed flour) of 27.1 mg/kg and formulation 3 (100% durian seed flour) of 24.3 mg/kg.
Co-Authors Abdul Munir Abdul Rasyid Jalil Agustin Tiwow Ahmad Idris Alfiani Alfiani Anang Wahid M.Diah Andi Pangeran Ayu Lestari Baharuddin Hamzah Baharuddin Hamzah Bange, Elissandra Dandi Daud Karel Walanda Denny Nugroho Sugianto Dessy Amalia Lubis Dg Masese Faradilla Eka Widyasari Ferdiansyah Ferdiansyah Fitriani Mandasari Haira Haira Hasma Ham Ibrahim Ibrahim Ishak Ishak Jamaludin M Sakung Mega Sofyana Latunda Melisa Arsad Minarni Rama Jura Minarni Rama Jura Mohamad Tofan Muhammad Zainuri Ni Nyoman Suciani Nizar Nizar Nur Taufik Syamsudin Nurhaeni Poppy Fitra Wahyuni Purnama Ningsih Putri Hasanah Rezki Rezki Rukmawati Rukmawati Saida M. Oden Tau Samsurizal, M. Sulaeman Siti Masita Sitti Rahmawati Sri Hastuti Virgianti Pulukadang Sri M. Sabang Suherman Suherman Suherman Suherman Suherman Suherman Supriadi Supriadi