Érica A Souza Silva

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This study presents a new approach for improving the structure, and hence the robustness, of the SPME fiber coating applied for gas chromatography (GC) analysis. It involves application of an external layer of poly(dimethyl siloxane) (PDMS) over the commercial PDMS/divinyl benzene (DVB) extraction phase. The fiber provided extraction capabilities similar to(More)
This study presents needle trap device (NTD) coupled with a portable gas chromatography-ion mobility spectrometry detection system (NTD-GC-IMS) as an advantageous, simple, cheap and reliable approach for on-site quantitative analysis. The NTD-GC-IMS system was evaluated using α-pinene, limonene and acetone as analytical models. Results showed satisfactory(More)
A headspace solid phase microextraction (HS-SPME) method combined with gas chromatography-mass spectrometry (GC/MS) was developed and optimized for extraction and analysis of volatile organic compounds (VOC) of leaves and galls of Myrcia splendens. Through a process of optimization of main factors affecting HS-SPME efficiency, the coating(More)
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