The standard of identification: it has been identified according to physiochemistry, UV spectrum, molecular weight, Chromatographic Fingerprints and amino acid analysis.
鉴别和检查指标标准：通过理化性质、紫外光谱、分子量指标、指纹图谱、水解氨基酸指标五部分进行确定。
2
Methods the chemical compositions of the petroleum ether extracts were isolated and purified by chromatographic methods. The structure of acquired compounds was identified by spectrum method.
方法采用多种色谱方法对其含有的化合物进行分离纯化，利用波谱法对得到的化合物进行结构鉴定。
3
With gas chromatographic and mass spectrum (GC-MS) analysis technology, the chemical composition of biomass tar and its distillations were analyzed.