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All Journal JURNAL ILMIAH KESEHATAN KEPERAWATAN Jurnal Keperawatan Komunitas Jurnal Riset Kimia Sains Manajemen:Jurnal Manajemen UNSERA Kingdom (The Journal of Biological Studies)
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Jurusan PGSD FIP UNESA
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Decision Sciences, Operations Research & Management Environmental Science Health Professions Nursing Public Health

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Journal : Jurnal Riset Kimia

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STUDI OPTIMASI PENENTUAN UNSUR HARA BESI DALAM CAMPURAN TANAH DAN KOMPOS MENGGUNAKAN METODE SPEKTROFOTOMETRI -, Refilda; -, Suhartini; -, Indrawati
Jurnal Riset Kimia Vol 8, No 2 (2015): March
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v8i2.231

Abstract

Determination of iron nutrient content in a mixture of soil and compost with spectrophotometric method has been carried out. Metal ions Fe(II) complexed with 0.1% ortho-fenantrolin 2 mL, 0.01 M citric acid as reducing  agent  using acetat buffer at pH 4.5 and its complex was measured by using spectrophotometer UV/Vis at wavelength 515 nm, the complex stability for was 60 minutes . The highest nutrient of iron with content in soil:compost with ratio of 0.8:0.2 was 0.92% at incubation time 30 days. The lowest iron content in the mixture of soil:compost (1:0) at incubation time for  15 days was 0.58% that obtained by the regression equation y = 95.85x + 0.025 with R2=0.992. The level of nutrient iron in compost obtained lower than the maximum regulated by SNI 2.00%.
Co-Authors Andrian Herniyatun - Indrawati Indrawati Nida Hanifa Rachman Nur Laila, Nuri Amalia Nurfitriyana Hidayati Hidayati Nurul Azizatunnisa Refilda Refilda