Determination of some common heavy metals and radionuclides in some medicinal herbs using ICP-MS/MS (original) (raw)

Journal of AOAC INTERNATIONAL

Abstract

Medicinal Herbs is the old traditional way for many diseases treatment and now considered the first natural source of the pharmaceutical active ingredients, so it is of the importance to focus on the hygiene of these plants as it should to be safe to consumption. This work aimed to monitor the common heavy and radioactive elements in some of the common used herbs namely Anise, Chamomile, Clover, Cumin, Coriander, Fennel, Roselle, Rosemary, Sage and Thyme. A total of 12 elements were measured including two radionuclides, Al, As, Cd, Hg, Co, Cr, Ni, Pb, Sr, Th, U and V. Heavy metal are ecologically and biologically important, which may involve in some health disorder symptoms in human body. Samples were digested with microwave digester and measurements have been done with ICP-MS/MS in Helium mode to increase sensitivity, lower the background and avoid interferences. Method validation and verification were done thru spiking process at 2.0 µg/kg level, then RSD, LOD and LOQ were calcula...

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