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Molecules

Title:		HS-BAmuE: A New Alternative Approach for VOCs Analysis-Application for Monitoring Biogenic Emissions from Tree Species
Author(s):		Goncalves OC; Cerqueira J; Mestre AS; Neng NR; Nogueira JMF;
Address:		"Centro de Quimica Estrutural, Institute of Molecular Sciences, Departamento de Quimica e Bioquimica, Faculdade de Ciencias, Universidade de Lisboa, 1749-016 Lisboa, Portugal"
Journal Title:		Molecules
Year:		2023
Volume:		20230125
Issue:		3
Page Number:		-
DOI:		10.3390/molecules28031179
ISSN/ISBN:		1420-3049 (Electronic) 1420-3049 (Linking)
Abstract:		"In this work, a new analytical approach is proposed for monitoring biogenic volatile organic compounds (BVOCs) by combining headspace bar adsorptive microextraction (HS-BAmuE) with gas chromatography-mass spectrometry (GC-MS). The HS-BAmuE methodology was developed, optimized, validated and applied for the analysis of BVOCs emitted from two tree species (Eucalyptus globulus Labill. and Pinus pinaster Aiton) and compared with headspace solid phase microextraction (HS-SPME), commonly accepted as a reference technique. To achieve optimum experimental conditions, numerous assays were carried out by both methodologies, studying the release of the five major monoterpenoids (alpha-pinene, beta-pinene, myrcene, limonene and 1,8-cineole) from the leaves of the tree species, whereas the maximum selectivity and efficiency were obtained using an activated carbon and PDMS/DVB fiber as sorbent phases for HS-BAmuE and HS-SPME, respectively. Under optimized experimental conditions, both methodologies showed similar profiling and proportional responses, although the latter present a higher sensitivity in the analytical configuration used. For the five monoterpenoids studied, acceptable detection limits (LODs = 5.0 mug L(-1)) and suitable linear dynamic ranges (20.0-100.0 mg L(-1); r(2) >/= 0.9959) were achieved, and intra- and inter-day studies proved that both methodologies exhibited good results (RSD and %RE
Keywords:		*Trees Adsorption Solid Phase Microextraction/methods Gas Chromatography-Mass Spectrometry Eucalyptol *Volatile Organic Compounds BVOCs Eucalyptus globulus Labill.Gc-ms HS-BAmuE Hs-spme Pinus pinaster Aiton;
Notes:		"MedlineGoncalves, Oriana C Cerqueira, Jessica S R F Mestre, Ana S Neng, Nuno R Nogueira, Jose M F eng UIDB/00100/2020, UIDP/00100/2020, LA/P/0056/2020 and PIDDAC - PCIF/GFC/0078/2018/Fundacao para a Ciencia e Tecnologia/ Switzerland 2023/02/12 Molecules. 2023 Jan 25; 28(3):1179. doi: 10.3390/molecules28031179"