Penentuan Kadar Kalium pada Pupuk Anorganik dengan Menggunakan Spektrofotometri Serapan Atom di Laboratorium Integrasi BBPPTP Medan

Abstract

The determination of potassium levels in inorganic fertilizers has been carried outin the Integration Laboratory of BBPPTP Medan. The purpose of this study was to determine the level of potassium contained in inorganic fertilizers, this studyused Atomic Absorption Spectrophotometry (AAS).The sampels used for the analysis of potassium levels were ten (10) sampels. The results obtained from the analysis of potassium levels in inorganic fertilizers are: Mutiara 15,33%; Ponaka 14,37%; Mutiara grower 19,08%; NPK Mutiara 14,31%; Mutiara 14,30 %; Superstar tawon 15,51 %; Ponska plus 14,43 %; Mutiara 15,22 %; Ponska 14,15 %; dan Mesti Biru 14,58 %. Potassium levels in inorganic fertilizer sampels haven’t been able to meet the established Indonesian National Standards (INS) which has been set at 8%.