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Degradation of ozone-depleting methyl halides in the troposphere characterized by isotopes

Total Cost €


EC-Contrib. €






 DEMETROPIS project word cloud

Explore the words cloud of the DEMETROPIS project. It provides you a very rough idea of what is the project "DEMETROPIS" about.

radiation    destruction    genetic    mechanisms    returning    fate    therewith    expand    uvb    skin    understand    budget    degrada    contributors    pollutants    absorbed    chloride    concerning    damage    canada    halogenated    radicals    earth    shield    skills    calculated    otherwise    frameworks    discovered    source    conceptual    discrepancies    1970s    layer    methyl    start    2h    ch3br    resolve    career    environmentally    bromide    cfcs    tion    apportionment    environment    combination    81br    waved    stratospheric    oxidation    curtailed    sinks    foremost    37cl    bear    experiences    life    drain    protect    hydroxyl    ozone    stratosphere    post    reducing    anthropogenic    brain    gaps    framework    counteracts    natural    halogens    degradation    isotope    compounds    innovative    greenhouse    sources    techniques    cancer    interpretational    atmospheric    emitted    sweden    isotopically    doctoral    halides    applicable    ch3cl    delineating    consequently    13c    halogen    gases    expertise    overestimation   

Project "DEMETROPIS" data sheet

The following table provides information about the project.


Organization address
postcode: 4318

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country Germany [DE]
 Project website
 Total cost 159˙460 €
 EC max contribution 159˙460 € (100%)
 Programme 1. H2020-EU.1.3.2. (Nurturing excellence by means of cross-border and cross-sector mobility)
 Code Call H2020-MSCA-IF-2015
 Funding Scheme MSCA-IF-EF-RI
 Starting year 2016
 Duration (year-month-day) from 2016-10-01   to  2018-09-30


Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 


 Project objective

The stratospheric ozone layer is an important shield to protect life on earth. Most of the short-waved UVB radiation is absorbed which otherwise would cause skin cancer and genetic damage. Destruction of the ozone layer by halogen radicals was discovered in the 1970s and consequently production of many halogenated compounds was curtailed. Methyl chloride (CH3Cl) and methyl bromide (CH3Br), important contributors of halogens in the stratosphere, are emitted by both natural and anthropogenic sources but significant gaps remain in the calculated atmospheric budget due to uncertainties concerning formation mechanisms and/or overestimation of degrada-tion processes. In this study a conceptual framework will be developed to apply innovative multi-element isotope analysis (2H, 13C, 81Br, 37Cl) for delineating sources and sinks of methyl halides, reducing the budget uncertainties and discrepancies. The specific aim is to isotopically identify and characterize oxidation of methyl halides by hydroxyl radicals, the main degradation process, both to understand the fate of these important pollutants in the environment but foremost to resolve the impact on any future isotope based approach for source apportionment. The results of this project will also have broader impact as the information and interpretational frameworks developed will be applicable to research on other environmentally relevant gases, e.g. greenhouse gases. Returning to the EU the applicant will expand his own doctoral experiences obtained in Sweden, and bring to the proposed work his innovative experiences and techniques on CFCs developed through his current post-doctoral research in Canada. Therewith this project not only counteracts brain drain but, based on the unique combination of expertise of all contributors, the applicant will be able to bring his past and current research skills and insight to bear to start developing his own research career within the proposed field.


year authors and title journal last update
List of publications.
2017 Axel Horst, Julian Renpenning, Hans-Hermann Richnow, Matthias Gehre
Compound Specific Stable Chlorine Isotopic Analysis of Volatile Aliphatic Compounds Using Gas Chromatography Hyphenated with Multiple Collector Inductively Coupled Plasma Mass Spectrometry
published pages: 9131-9138, ISSN: 0003-2700, DOI: 10.1021/acs.analchem.7b01875
Analytical Chemistry 89/17 2019-06-13

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