Penentuan Kadar Fosfor pada Pupuk NPK dengan Menggunakan Metode Spektrofotometri UV Visible

Abstract

Analysis of the determination of phosphorus content in NPK fertilizer using the UV-Vis spectrophotometry method was carried out at the Center for Plantation Seeds and Plant Protection (BBPPTP). With the aim of knowing what percentage of the total P2O5 content in NPK fertilizer and knowing whether the phosphorus content in the fertilizer meets the SNI quality standards. The analysis was carried out at a wavelength of 466 nm and the total P2O5 content was calculated. The results obtained for the total P2O5 content in the NPK fertilizer samples were Ponska Plus fertilizer 16.1865%, Mutiara 2AB 16.571%, Mutiara 3AB 15.865%, Ponska 15.3285%. The results of this analysis indicate that the Phosphorus content in NPK fertilizer is in accordance with the quality standard of SNI 2803:2010 where the quality standard is set at a minimum of 8%. In Complex fertilizer 4.0725% does not meet the quality standard of SNI 2803: 2010 where the standard set is at least 8%