1. Advanced Analysis Center; Korea Institute of Science and Technology; Seoul 136-791 Korea
2. Department of Chemistry; Kyung Hee University; Seoul 130-701 Korea
3. Interface Control Research Center; Korea Institute of Science and Technology; Seoul 136-791 Korea
4. Department of Buddhist Arts and Culture; Dongkook University; Seoul 100-715 Korea
5. Department of Scientific History and Archaeometry; University of Chinese Academy of Sciences; Beijing 100049 PR China