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All Journal IJCR (Indonesian Journal of Chemical Research)
Khusnah, Asma’ul
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Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Materials Science & Nanotechnology

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Penentuan Kadar Karbon Organik pada Sampel Tanah Menggunakan Metode Walkley & Black Khusnah, Asma’ul; Pawestri, Niken; Utami, Maisari
INDONESIAN JOURNAL OF CHEMICAL RESEARCH Vol. 10 No. 2 (2025): Volume 10, ISSUE 2, 2025
Publisher : Chemistry Department, Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/ijcr.vol10.iss2.art2

Abstract

Determination of C-organic content in soil using the Walkley & Black method with a UV-Vis spectrophotometer was conducted at the Agricultural Instrument Standards Application Center in Yogyakarta. The samples used in this experiment were soil samples. The analysis method used was the Walkley & Black method with a UV-Vis spectrophotometer. This method works based on the principle of wet oxidation using potassium dichromate (K₂Cr₂O₇) and sulfuric acid (H₂SO₄), where the remaining unreacted dichromate ions are measured using a spectrophotometer at a wavelength of 587 nm. The analysis results showed that the organic C content in the five soil samples ranged from 1.096% to 3.866%, classified from low to high. The variation in organic C content was influenced by environmental factors such as depth, soil texture, and drainage conditions. This analysis is important for determining soil fertility levels and supporting sustainable agricultural land management.
Co-Authors Pawestri, Niken Utami, Maisari