Authors:	Müller-Tautges, Christina Eichler, Anja Schwikowski, Margit Pezzatti, Gianni Boris Conedera, Marco Hoffmann, Thorsten
Title:	Historic records of organic compounds from a high Alpine glacier : influences of biomass burning, anthropogenic emissions, and dust Transport
Online publication date:	12-Oct-2022
Year of first publication:	2016
Language:	english
Abstract:	Historic records of dicarbonyls (glyoxal,methylglyoxal), carboxylic acids (C6–C12 dicarboxylic acids, pinic acid, p-hydroxybenzoic acid, phthalic acid, 4- methylphthalic acid), and ions (oxalate, formate, calcium)were determined with annual resolution in an ice core from Grenzgletscher in the southern Swiss Alps, covering the time period from 1942 to 1993. Chemical analysis of the organic compounds was conducted using ultra-high-performance liquid chromatography (UHPLC) coupled to electrospray ionization high-resolution mass spectrometry (ESI-HRMS) for dicarbonyls and long-chain carboxylic acids and ion chromatography for short-chain carboxylates. Long-term records of the carboxylic acids and dicarbonyls, as well as their source apportionment, are reported for western Europe. This is the first study comprising long-term trends of dicarbonyls and long-chain dicarboxylic acids (C6–C12) in Alpine precipitation. Source assignment of the organic species present in the ice core was performed using principal component analysis. Our results suggest biomass burning, anthropogenic missions, and transport of mineral dust to be the main parameters influencing the concentration of organic compounds. Ice core records of several highly correlated compounds (e.g., p-hydroxybenzoic acid, pinic acid, pimelic,and suberic acids) can be related to the forest fire history in southern Switzerland. P-hydroxybenzoic acid was found to be the best organic fire tracer in the study area, revealing the highest correlation with the burned area from fires. Historical records of methylglyoxal, phthalic acid, and dicarboxylic acids adipic acid, sebacic acid, and dodecanedioic acid are comparable with that of anthropogenic emissions of volatile organic compounds (VOCs). The small organic acids, oxalic acid and formic acid, are both highly correlated with calcium, suggesting their records to be affected by changing Mineral dust transport to the drilling site.
DDC:	050 Zeitschriften 050 General serials and their indexes
Institution:	Johannes Gutenberg-Universität Mainz
Department:	FB 09 Chemie, Pharmazie u. Geowissensch.
Place:	Mainz
ROR:	https://ror.org/023b0x485
DOI:	http://doi.org/10.25358/openscience-7953
Version:	Published version
Publication type:	Zeitschriftenaufsatz
License:	CC BY
Information on rights of use:	https://creativecommons.org/licenses/by/3.0/
Journal:	Atmospheric chemistry and physics 16 2
Pages or article number:	1029 1043
Publisher:	EGU
Publisher place:	Katlenburg-Lindau
Issue date:	2016
ISSN:	1680-7367
Publisher URL:	http://dx.doi.org/10.5194/acp-16-1029-2016
Publisher DOI:	10.5194/acp-16-1029-2016
Appears in collections:	DFG-OA-Publizieren (2012 - 2017)