THE EFFECT OF WET AND MICROWAVE DIGESTION METHODS ON MULTI ELEMENT DETERMINATION IN SOME EDIBLE MUSHROOM SAMPLES FROM SAKARYA, TURKEY BY ICP-OES

Abstract

The aim of this study was to evaluate the effect of wet and microwave digestion methods on multi elements determination by inductively coupled plasma - optical emission spectroscopy in mushroom samples collected from selected regions of Sakarya, Turkey during 2011. Trace elements levels such as Ba, Cd, Co, Cu, Fe, Mn, Mo, Ni, Pb, Sb, Se, V and Zn in six edible mushroom species (Agaricus bisporus, Agaricus subrufescens, Hygrocybe sp., Lactarius delicious, Lepiota bruneoincarneta and Pleurotus eryngii) were determined after wet and microwave digestions. Apple leaves standard reference material (NIST SRM 1515) was used for validation of the proposed method. The microwave digestion method well prevents sample from the secondary contamination, provides a more accuracy and needs a shorter time than wet ashing. The contents of the hazardous trace elements are well below the prescribed limits of World Health Organization.