(Table 6) Relative abundance and major strutural types of hydrocarbons in eac...

Obtained after heating for 72 hr. Number of crosses give a crude estimate of relative abundances i.e. +++++ = very abundant, + = minor amounts, Tr = trace, - = absent.该样本经72小时加热后获得。通过十字标记的数量可对相对丰度进行粗略估算，即+++++表示丰度极高，+表示仅含少量，Tr代表痕量，-代表未检出。