The straight-chaincompounds were relatively more abundant than the aromatic aldehydes and the branch-chain aldehydes in the oil smoke.
油烟烟气中直链的羰基化合物的浓度大于支链及环状的羰基化合物的浓度；
2
Through the simulation experiment it is concluded that sulphur can react with different kinds of chaincompounds to form thiophene series compounds.
通过模拟实验发现硫能和各种链状化合物反应形成噻吩系列化合物。
3
An unknown percentage of the oil would have been eaten by bacteria, essentially rendering the compounds harmless and incorporating them into the food chain.