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DETERMINATION OF HEAVY METAL CONCENTRATION IN DIETARY SUPPLEMENT USING ATOMIC ABSORPTION ASECTROMETRY

Authors :
Bačurin, Ana
Kukoč Modun, Lea
Burčul, Franko
Škugor Rončević, Ivana
Publication Year :
2020

Abstract

Pri niskim koncentracijama teški metali neophodni su za čovjekovo preživljavanje. Manjak esencijalnih elemenata može dovesti do poremećaja i bolesti u organizmu, dok pri visokim koncentracijama mogu postati toksični za ljudski organizam. Ovim eksperimentalnim radom određivane su koncentracije teških metala u pet različitih uzoraka dodataka prehrani Moringe i Mace. Mjerenje je izvršeno atomskom apsorpcijskom spektrometrijom sa elektrotoplinskom atomizacijom. Opisana su temeljna načela spektrofotometrije, te važne značajke atomske apsorpcijske spekrtometrije. Prikazani su način pripreme uzoraka i standardnih otopina, te mjerenjem dobiveni rezultati. Teški metali čija je koncentracija mjerena su: bakar, kadmij, kobalt, krom, nikal i željezo. Temeljem dobivenih rezultata može se zaključiti da u testiranim dodacima prehrani koncentracije teških metala uglavnom ne prelaze granicu toksičnosti. Povećane vrijednosti koncentracije željeza povezane su sa primjenom ovih dodataka prehrani u liječenju hematoloških poremećaja, dok ostali ispitivani metali prema dobivenim vrijednostima ne pokazuju negativan utjecaj na ljudsko zdravlje.<br />At low concentrations, heavy metals are essential for human survival. Lack of essential elements can lead to disorders and diseases in the human body, while at high concentrations they can become toxic. In this experiment, heavy metal concentrations were determined in five different samples of Moringa and Maca dietary supplements. The measurement was performed by atomic absorption spectrometry with electrothermal atomization. The basic principles of spectrophotometry and the essential features of atomic absorption spectrometry were described in this work. We also presented the method of preparation of samples and standard solutions, and we presented the obtained results. Heavy metals whose concentration we measured were: copper, cadmium, cobalt, chromium, nickel and iron. The results led us to a conclusion that in the tested dietary supplements the concentrations of heavy metals generally do not exceed the toxicity limit. Increased values of iron concentrations are associated with the use of these dietary supplements in the treatment of hematological disorders, while other tested metals according to the obtained values do not show a negative impact on human health.

Details

Language :
Croatian
Database :
OpenAIRE
Accession number :
edsair.od......4113..fa9f27662f6a17cb9be157aa4f717414