STUDI OPTIMASI PENENTUAN UNSUR HARA BESI DALAM CAMPURAN TANAH DAN KOMPOS MENGGUNAKAN METODE SPEKTROFOTOMETRI

Authors

  • Refilda - Laboratorium Kimia Lingkungan, Jurusan Kimia FMIPA, Universitas Andalas, Jurusan Kimia FMIPA Unand, Kampus Limau Manis, 25163, Indonesia
  • Suhartini - Laboratorium Kimia Lingkungan, Jurusan Kimia FMIPA, Universitas Andalas, Jurusan Kimia FMIPA Unand, Kampus Limau Manis, 25163
  • Indrawati - Laboratorium Kimia Lingkungan, Jurusan Kimia FMIPA, Universitas Andalas, Jurusan Kimia FMIPA Unand, Kampus Limau Manis, 25163

DOI:

https://doi.org/10.25077/jrk.v8i2.231

Keywords:

compost, soil, nutrient element iron, UV/Vis

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%.

References

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Badan standarisasi nasional, SNI 19-7030-2004, Spesifikasi Kompos Dari Sampah Organik Domestik

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Published

2015-03-29

How to Cite

-, R., -, S., & -, I. (2015). STUDI OPTIMASI PENENTUAN UNSUR HARA BESI DALAM CAMPURAN TANAH DAN KOMPOS MENGGUNAKAN METODE SPEKTROFOTOMETRI. Jurnal Riset Kimia, 8(2), 143. https://doi.org/10.25077/jrk.v8i2.231

Issue

Vol. 8 No. 2 (2015): March

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