Dynamics of UV‐driven hydrogen peroxide formation on an intertidal sandflat
Photochemically produced H 2 O 2 was found to accumulate at micromolar concentrations in intertidal Wadden Sea areas. Annual amplitudes of solar radiation lead to variations of the intertidal H 2 O 2 accumulation with concentrations between 1 and 4 µ mol liter −1 during summer, while winter concentr...
Published in: | Limnology and Oceanography |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
1997
|
Subjects: | |
Online Access: | http://dx.doi.org/10.4319/lo.1997.42.6.1406 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.4319%2Flo.1997.42.6.1406 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.4319/lo.1997.42.6.1406 |
id |
crwiley:10.4319/lo.1997.42.6.1406 |
---|---|
record_format |
openpolar |
spelling |
crwiley:10.4319/lo.1997.42.6.1406 2023-12-03T10:12:49+01:00 Dynamics of UV‐driven hydrogen peroxide formation on an intertidal sandflat Abele‐Oeschger, Doris Tüg, Helmut Röttgers, Rüdiger 1997 http://dx.doi.org/10.4319/lo.1997.42.6.1406 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.4319%2Flo.1997.42.6.1406 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.4319/lo.1997.42.6.1406 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Limnology and Oceanography volume 42, issue 6, page 1406-1415 ISSN 0024-3590 1939-5590 Aquatic Science Oceanography journal-article 1997 crwiley https://doi.org/10.4319/lo.1997.42.6.1406 2023-11-09T14:37:35Z Photochemically produced H 2 O 2 was found to accumulate at micromolar concentrations in intertidal Wadden Sea areas. Annual amplitudes of solar radiation lead to variations of the intertidal H 2 O 2 accumulation with concentrations between 1 and 4 µ mol liter −1 during summer, while winter concentrations were mostly <0.5 µ mol liter −1 . Diurnal variations of H 2 O 2 accumulation over daily low‐tide periods in intertidal environments are determined by the incident solar radiation, the concentration of UV‐absorbing dissolved organic carbon in the water, as well as the concomitant biological and chemical H 2 O 2 degradation within the sediment surface. The efficiency of photosynthetic available radiation (PAR), UVA and UVB photons for photochemical H 2 O 2 production was assessed using cut‐off filters in the UVB and in different UVA ranges. UVB photons (295–320 nm) displayed an 11‐fold higher efficiency compared to UVA (335–370 nm) and a 340‐fold higher efficiency compared to PAR photons (>400 nm). A 10% ozone reduction leads to a doubling of UVB surface irradiance at 300 nm, which entails a 30 and 40% increase of the apparent intertidal H 2 O 2 concentrations. Progressive stratospheric ozone depletion via UVB‐induced H 2 O 2 formation will have yet unpredictable effects on boreal and Antarctic intertidal ecosystems. Article in Journal/Newspaper Antarc* Antarctic Wiley Online Library (via Crossref) Antarctic Limnology and Oceanography 42 6 1406 1415 |
institution |
Open Polar |
collection |
Wiley Online Library (via Crossref) |
op_collection_id |
crwiley |
language |
English |
topic |
Aquatic Science Oceanography |
spellingShingle |
Aquatic Science Oceanography Abele‐Oeschger, Doris Tüg, Helmut Röttgers, Rüdiger Dynamics of UV‐driven hydrogen peroxide formation on an intertidal sandflat |
topic_facet |
Aquatic Science Oceanography |
description |
Photochemically produced H 2 O 2 was found to accumulate at micromolar concentrations in intertidal Wadden Sea areas. Annual amplitudes of solar radiation lead to variations of the intertidal H 2 O 2 accumulation with concentrations between 1 and 4 µ mol liter −1 during summer, while winter concentrations were mostly <0.5 µ mol liter −1 . Diurnal variations of H 2 O 2 accumulation over daily low‐tide periods in intertidal environments are determined by the incident solar radiation, the concentration of UV‐absorbing dissolved organic carbon in the water, as well as the concomitant biological and chemical H 2 O 2 degradation within the sediment surface. The efficiency of photosynthetic available radiation (PAR), UVA and UVB photons for photochemical H 2 O 2 production was assessed using cut‐off filters in the UVB and in different UVA ranges. UVB photons (295–320 nm) displayed an 11‐fold higher efficiency compared to UVA (335–370 nm) and a 340‐fold higher efficiency compared to PAR photons (>400 nm). A 10% ozone reduction leads to a doubling of UVB surface irradiance at 300 nm, which entails a 30 and 40% increase of the apparent intertidal H 2 O 2 concentrations. Progressive stratospheric ozone depletion via UVB‐induced H 2 O 2 formation will have yet unpredictable effects on boreal and Antarctic intertidal ecosystems. |
format |
Article in Journal/Newspaper |
author |
Abele‐Oeschger, Doris Tüg, Helmut Röttgers, Rüdiger |
author_facet |
Abele‐Oeschger, Doris Tüg, Helmut Röttgers, Rüdiger |
author_sort |
Abele‐Oeschger, Doris |
title |
Dynamics of UV‐driven hydrogen peroxide formation on an intertidal sandflat |
title_short |
Dynamics of UV‐driven hydrogen peroxide formation on an intertidal sandflat |
title_full |
Dynamics of UV‐driven hydrogen peroxide formation on an intertidal sandflat |
title_fullStr |
Dynamics of UV‐driven hydrogen peroxide formation on an intertidal sandflat |
title_full_unstemmed |
Dynamics of UV‐driven hydrogen peroxide formation on an intertidal sandflat |
title_sort |
dynamics of uv‐driven hydrogen peroxide formation on an intertidal sandflat |
publisher |
Wiley |
publishDate |
1997 |
url |
http://dx.doi.org/10.4319/lo.1997.42.6.1406 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.4319%2Flo.1997.42.6.1406 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.4319/lo.1997.42.6.1406 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Limnology and Oceanography volume 42, issue 6, page 1406-1415 ISSN 0024-3590 1939-5590 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.4319/lo.1997.42.6.1406 |
container_title |
Limnology and Oceanography |
container_volume |
42 |
container_issue |
6 |
container_start_page |
1406 |
op_container_end_page |
1415 |
_version_ |
1784259437844758528 |