DETERMINATION OF CALCIUM AND IRON METAL IN KELOR LEAF (Moringa oleifera Lam) by Using ATOMIC ABSORPTION SPECTROPHOTOMETRY
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Ridho Asra, Festires Kurnia Harefa, Zulharmita Zulharmita, Nessa Nessa (2018). DETERMINATION OF CALCIUM AND IRON METAL IN KELOR LEAF (Moringa oleifera Lam) by Using ATOMIC ABSORPTION SPECTROPHOTOMETRY. Journal of Pharmaceutical and Sciences, JPS Volume 1 Nomor 1 (2018). https://doi.org/10.36490/journal-jps.com.v1i1.5
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Abstract
The determination of calcium and iron metal in moringa leaf sample obtained from Purus area, Padang Barat has been done. In this study, the destruction method that has been used was wet destruction, the result of this method was determined with atomic absorption spectrophotometer by using Ca and Fe hallow cathode lamp. Based on the result of this study, a linear regression equation of calcium standard solution which was y = 0,03818 + 0,17036x, with r = 0,9997 and a linear regression equation of iron standard solution which was y = 0,03831 + 0,064275x, with r = 0,9986. The limit of detection (LOD) and the limit of quantitation (LOQ) of calcium was 0,0678 mg/kg and 0,2261 mg/kg and then the limit of detection (LOD) and the limit of quantitation (LOQ) of iron was 0,5790 mg/kg and 1,9292 mg/kg. The results of the determination of calcium content in moringa leaf with three replications were 1277,986 mg/kg, 1269,178 mg/kg, 1229,063 mg/kg so that the average calcium content in the moringa leaf was 1258,742 mg/kg. The results of the determination of iron content in moringa leaf with three replications were 210,509 mg/kg, 198,985 mg/kg, 206,117 mg/kg so that the average iron content in moringa leaf was 205,204 mg/kg.
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