一方面，重质松节油是天然可再生的生物质资源松香松节油加工产生的副产物，

一方面，重质松节油是天然可再生的生物质资源松香松节油加工产生的副产物，约占松节油总量的20%，目前主要用作廉价的燃料、选矿浮选剂等。其主要成分为长叶烯，含量高达40% ~ 50%，因此长叶烯的高值化利用是重质松节油高值化利用的关键，值得深入研究。

On the one hand, heavy turpentine is a byproduct produced by the processing of natural and renewable biomass resources such as rosin turpentine, accounting for about 20% of the total amount of turpentine. Currently, it is mainly used as a cheap fuel and flotation agent for mineral processing. Its main component is longifolene, with a content of up to 40%~50%. Therefore, the high-value utilization of longifolene is the key to the high-value utilization of heavy turpentine oil and is worthy of in-depth research.

On the one hand, heavy turpentine is a by-product produced by the processing of rosin turpentine, a natural and renewable biomass resource, accounting for about 20% of the total turpentine, and is mainly used as cheap fuel, flotation agent and so on. Its main component is longifolene, the content of which is as high as 40% ~ 50%, so the high-value utilization of longifolene is the key to the high-value utilization of heavy turpentine, which deserves further study.