https://www.syu.ac.kr/chem/%ea%b5%90%eb%ac%b4%ec%b2%98-%ed%95%99%ec%82%ac%ec%a7%80%ec%9b%90%ec%84%bc%ed%84%b0-%eb%8c%80%ec%b2%ad%ec%86%8c%eb%a1%9c-%ec%9d%b8%ed%95%9c-%ed%9c%b4%ea%b4%80%ec%95%88%eb%82%b4-01-03-%eb%aa%a9/