1. Αποθετήριο Παραδοτέων Υποτρόφων Δράσεων ΕΣΠΑ Τριτοβάθμιας Εκπαίδευσης 2017-2023
2. Όλο το Αποθετήριο
3. Ερευνητικές ομάδες

Τύπος:	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	Observations of gas-phase alkylamines at a coastal site in the east Mediterranean atmosphere
Συγγραφέας:	[EL] Τζιτζικαλάκη, Ευαγγελία[EN] Tzitzikalaki, Evangelia [EL] Καλυβίτης, Νικόλαος[EN] Kalivitis, Nikolaos [EL] Κανακίδου, Μαρία[EN] Kanakidou, Maria
Ημερομηνία:	29/10/2021
Περίληψη:	Atmospheric amines are ubiquitous compounds in the atmosphere, having both natural and anthropogenic origin. Recently, they have been identified as important contributors to new particle formation in the atmosphere, but observations of their atmospheric concentrations are scarce. In the present study we introduce the first systematic long-term observations of gas-phase amines measurements in the East Mediterranean atmosphere. Air samples were collected at the Finokalia monitoring station of the University of Crete during a 3.5-year period from January 2013 to July 2016, and analyzed after extraction using a high-performance liquid chromatography triple quadrupole mass spectrometer. The detected alkylamines were the sum of dimethylamine and ethylamine (DMA+EA), trimethylamine (TMA), diethylamine (DEA) and triethylamine (TEA). DMA+EA and TMA were the most abundant alkylamines, with concentrations spanning from the detection limit to 78.0 and 69.8 pptv, and average concentrations of 7.8 ± 12.1 and 7.5 ± 12.4 pptv, respectively. Amines showed pronounced seasonal variability with DMA+EA and TMA concentrations being higher in winter. Statistical analysis of the observations showed different sources for each of the studied amines, except for DMA+EA and DEA that appear to have common sources in the region. This analysis points to a marine source of TMA and animal husbandry in the area as a potential source of TEA. None of the alkylamines is correlated with other anthropogenic sources. Furthermore, no clear association was found between the seasonality of NPF events and alkylamines concentrations, while a clear correlation was detected between the seasonality of nucleation mode particle (dp < 25 nm) number concentrations and alkylamine concentrations, indicating that amines may contribute to nucleation mode particles’ production.
Γλώσσα:	Αγγλικά
Σελίδες:	17
DOI:	10.3390/atmos12111454
EISSN:	2073-4433
Θεματική κατηγορία:	[EL] Περιβαλλοντική χημεία[EN] Environmental Chemistry [EL] Μετεωρολογία και Επιστήμες της ατμόσφαιρας[EN] Meteorology and Atmospheric Sciences [EL] Αναλυτική χημεία[EN] Analytical Chemistry
Λέξεις-κλειδιά:	alkylamines; East Mediterranean; gas-phase; HPLC-MS; new particle formation
Κάτοχος πνευματικών δικαιωμάτων:	© 2021 by the authors. Licensee MDPI, Basel, Switzerland.
Όροι και προϋποθέσεις δικαιωμάτων:	This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/ 4.0/).
Ηλεκτρονική διεύθυνση του τεκμηρίου στον εκδότη:	https://www.mdpi.com/2073-4433/12/11/1454
Ηλεκτρονική διεύθυνση περιοδικού:	https://www.mdpi.com/journal/atmosphere
Τίτλος πηγής δημοσίευσης:	Atmosphere
Τεύχος:	11
Τόμος:	12
Σελίδες τεκμηρίου (στην πηγή):	Article no 1454
Σημειώσεις:	This research is co-financed by Greece and the European Union (European Social FundESF) through the Operational Programme “Human Resources Development, Education and Lifelong Learning 2014–2020” in the context of the project “Ammonia and amines effect on new particle formation in the eastern Mediterranean—ACTION” (MIS 5048424).
Εμφανίζεται στις συλλογές:	Ερευνητικές ομάδες