以下为句子列表：
英文: Although samples were in a hot reflux for a long time at 85℃ in the experiment, and 5? molecular sieve of the adsorbed sample was acidized by hydrofluoric acid, the analytical method was tested to have little influence on carbon isotopic composition of th
中文: 尽管实验过程中样品经过85℃长时间加热回流及吸附样品的5?分子筛用氢氟酸酸化处理，但实验结果经仪器检测，证明该方法对正构烷烃碳同位素值影响因素不大。
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