HS-SPME-GC / MS 在大熊猫尿液化学成分检测中的应用

尿液在大熊猫化学通讯过程中具有重要作用。对大熊猫尿液中化学成分的检测是揭示大熊猫尿液中化学物质组成及其功能的关键。本实验通过使用顶空固相微萃取技术(Headspace-solid phase microextraction,HSSPME)对大熊猫尿液样品进行前期处理,继而利用气相色谱- 质谱联用技术(Gas chromatography-mass spectrometry,GC / MS)对大熊猫尿液中化学成分进行检测。共检测到56 个峰,通过在NIST (National Institute of Standards
and Technology)质谱库中进行检索,初步推定出其中的38 种物质。除此之外,还对HS - SPME 萃取头的净化方法进行了探索和改进。结果表明,顶空固相微萃取技术结合气相色谱- 质谱联用技术能够应用于大熊猫尿液中挥发性与半挥发性化合物的检测,并且能够得到较好的实验结果,为揭示大熊猫化学通讯机理提供基础。

The application of HS-SPME-GC/MS in detecting chemical components in giant panda(Ailuropoda melanoleuca)urine

Urine plays an important role in chemical communication between giant pandas(Ailuropoda melanoleuca).The detection of chemical compounds in giant panda urine is the key to identifying the compositions and assaying the function of each chemical compound.We used headspace-solid phase microextraction(HS-SPME) and gas chromatography-mass spectrometry(GC/MS) to pre-treat and analyze the composition of giant panda urine.We found 56 peaks and through searching the mass spectrometry library of the National Institute of Standards and Technology(NIST),38 of them were putatively identified.In addition,we also modified the method of cleaning HS-SPME fiber.The results show that HS-SPME-GC/MS is an effective method to detect the volatile and semi-volatile compounds in giant panda urine.It is proved to be an important research tool for revealing the mechanism of chemical communication in the giant pandas.