Simultaneous ICP-AES Determination of Iron Manganese Copper Zinc in Tremella with Microwave Assisted Sample Digestion

The tremella sample was digested with mixed solution of HNO3-H2O2 (7+2) by microwave sample digestion system and the contents of Fe,Mn,Cu,Zn in sample solution were determined by ICP-AES. Wavelengths of 238.204,257.610,324.752 and 206.200 nm were selected as analytical spectral lines for determination of Fe,Mn,Cu and Zn respectively. Values of RSD′s (n=5) of Fe,Mn,Cu and Zn were in the range of 1.4%-2.3%,and detection limits (3s) found were less than 0.015 mg·L-1. The proposed method was used in the determination of the 4 elements in tremella,giving values of recovery in the range of 89.6%-97.3% . The results obtained was in conformity with those obtained by AAS.