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In this work, a novel method for identification of orcein derivatives from orchil is presented. It was developed, similarly to other methods used to determine natural dyes, with the use of liquid chromatography coupled to tandem mass spectrometry (LC/MS/MS). Apart from presenting a novel method for orcein derivatives determination, this work also aims to review currently existing method for identification...
Composition of the secondary organic aerosol (SOA) generated during ozonolysis of limonene was investigated with liquid chromatography coupled to the negative electrospray ionization (ESI), quadrupole tandem mass spectrometry (MS/MS) as well as high resolution Time-of-Flight mass spectrometry. Aerosol was generated in the flow-tube reactor. HR-MS/MS analysis allowed for proposing structures for the...
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