PERANAN EKSTRAK ETANOL DAUN KANGKUNG DARAT (Ipomoea reptans Poir) DALAM MENURUNKAN KADAR LOGAM BERAT MERKURI DENGAN METODE SPEKTROFOTOMETRI SERAPAN ATOM

Friska Mei Veronika, Mei Veronika (2020) PERANAN EKSTRAK ETANOL DAUN KANGKUNG DARAT (Ipomoea reptans Poir) DALAM MENURUNKAN KADAR LOGAM BERAT MERKURI DENGAN METODE SPEKTROFOTOMETRI SERAPAN ATOM. Diploma thesis, Sekolah Tinggi Ilmu Kesehatan Nasional.

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Abstract

This study aims to determine the role of ethanol extract from ground kale leaves (Ipomoea reptans Poir) in reducing levels of heavy metal mercury by the SSA method. Leaves of ground kale (Ipomoea reptans Poir) were extracted by maceration using 70% ethanol solvent. The ethanol extract of terrestrial kale leaves obtained were analyzed by secondary metabolites. Determination of decreased levels of heavy metals mercury by using Atomic Absorption Spectrophotometry with wavelengths 253,7 nm. Determination of concentration reduction is done by using a series of concentrations of 4 ppm, 9 ppm, 14 ppm, 20 ppm, 24 ppm. The results showed ethanol extract of terrestrial kale leaves (Ipomoea reptans Poir) positive containing flavonoids, tannin, alkaloid, saponin, and steroids. Ethanol extract of ground kale leaves produces an average concentration value that can reduce mercury up to 50% (EC50) by 10,45 ppm (coefficient of variation 0,48%).

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