If, however, they are subjected instead to pyrolysis-a process of controlled burning in a low-oxygen atmosphere-the result is charcoal, a substance that is mostly elemental carbon.
但如果经过高温分解—在低氧环境下有控制的燃烧—它将会形成木炭，其大部分是永久碳。
2
Limits for elemental impurities in the final substance, as implemented by the CEP holder will be included on the CEP.
元素杂质在最终原料药中的限度会根据CE P持有人实施的情况包括在CEP上。
3
Elemental quantitative analysis and IR spectral analysis show the substance to be 1-triacontanol.