Elemental analysis of henna samples by MP AES

Abstract

In this study, a new methodology using microwave-induced plasma atomic emissionspectrometry (MP AES) after microwave assisted digestion been developed to determine aluminum,boron, cadmium, cobalt, chromium, copper, iron, lead, manganese, molybdenum, nickel, and tinconcentrations in 18 commercial henna samples purchased from markets in Turkey. For theelemental determination, 0.100 g henna sample weighed and digested with 10 mL of HNO3+H2O2(3:1) mixture in a microwave digestion system. The analytes in certified reference material bushbranches and the leaves were determined in the uncertainty limits of the certified values as well asthe analytes added to the henna sample prior the digestion were recovered quantitatively (95-105%). Finally found results in henna samples were compared with several regulations from differentcountries as well as other published results.