Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation, East China Institute of Technology, Nanchang, Jiangxi Province 330013, P R China.
J Agric Food Chem. 2013 Jan 23;61(3):547-52. doi: 10.1021/jf303793t. Epub 2013 Jan 14.
In the course of this study, desorption atmospheric pressure chemical ionization mass spectrometry (DAPCI-MS) was applied to readily acquire the mass spectral fingerprints of camphor wood and other wood samples under ambient conditions. Characteristic natural analytes, such as camphor and geraniol, were successfully detected in their protonated form and then identified by tandem mass spectrometry (MS(n)). Further principal component analysis (PCA) and cluster analysis (CA) of the mass spectrometric results allow a confident discrimination of camphor wood products from inferior/fake ones. These experimental findings demonstrate that DAPCI-MS is a valuable tool for differential analysis of untreated camphor wood products with sufficient sensitivity and high throughput.
在本研究中，解吸常压化学电离质谱（DAPCI-MS）被应用于在环境条件下快速获取樟脑木和其他木材样品的质谱指纹。特征性的天然分析物，如樟脑和香叶醇，以质子化形式成功检测到，然后通过串联质谱（MS(n)）进行鉴定。进一步对质谱结果进行主成分分析（PCA）和聚类分析（CA），可以可靠地区分樟脑木制品和劣质/假冒产品。这些实验结果表明，DAPCI-MS 是一种用于未经处理的樟脑木制品进行差异分析的有价值工具，具有足够的灵敏度和高通量。
