Carbon source
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Characterizing Black Carbon (BC) at regional background areas is important for better understanding its impact on climate forcing and health effects. The variability and sources of Equivalent Black Carbon (EBC) in PM10 (atmospheric particles with aerodynamic diameter smaller than 10 μm) have been investigated during a 5-year measurement period at the National Atmospheric Observatory Košetice (NAOK), Czech Republic. Ground based measurements were performed from September 2012 to December 2017 with a 7-wavelength aethalometer (AE31, Magee Scientific). The contributions of fossil fuel (EBCff) and biomass burning (EBCbb) were estimated using the aethalometer model. Seasonal, diurnal and weekly variations of EBC were observed that can be related to the sources fluctuations and transport characteristic of pollutants predominantly associated with regional air masses recirculating over the Czech Republic and neighboring countries. The absorption Ångström exponent (α-value) estimated in summer (1.1 ± 0.2) was consistent with reported value for traffic, while the mean highest value (1.5 ± 0.2) was observed in winter due to increased EBCbb accounting for about 50% of the total EBC. This result is in agreement with the strong correlation between EBCbb and biomass burning tracers (levoglucosan and mannosan) in winter. During this season, the concentrations of EBCbb and Delta-C (proxy for biomass burning) reached a maximum in the evening when increasing emissions of wood burning in domestic heating devices (woodstoves/heating system) is expected, especially during the weekend. The diurnal profile of EBCff displays a typical morning peak during the morning traffic rush hour and shows a decreasing concentration during weekends due to lower the traffic emission.
- MeSH
- aerosoly MeSH
- látky znečišťující vzduch * chemie MeSH
- monitorování životního prostředí MeSH
- pevné částice chemie MeSH
- roční období MeSH
- uhlík * chemie MeSH
- Publikační typ
- časopisecké články MeSH
- Geografické názvy
- Česká republika MeSH
... carbon monoxide 5 -- 1.6 Health effects of exposure to carbon monoxide 7 -- 1.6.1 Cardiovascular effects ... ... -- EHC 213: Carbon Monoxide -- 2. ... ... SOURCES OF CARBON MONOXIDE IN THE -- ENVIRONMENT 3& -- 3.1 Introduction 38 -- 3.2 Principles of formation ... ... Other sources 52 -- 3.3 Indoor carbon monoxide 53 -- 3.3.1 Introduction 5 3 -- 3.3.2 Emissions from ... ... carbon monoxide 150 -- 6.4.1 Intracellular effects of carbon monoxide 15Ň -- 6.4.2 Carbon monoxide binding ...
Environmental health criteria, ISSN 0250-863X No. 213
2nd ed. XXIV, 464 s. ; 24 cm
- MeSH
- environmentální zdraví MeSH
- hodnocení rizik MeSH
- monitorování životního prostředí MeSH
- oxid uhelnatý škodlivé účinky farmakologie MeSH
- rizikové faktory MeSH
- vystavení vlivu životního prostředí MeSH
- Konspekt
- Lékařské vědy. Lékařství
- NLK Obory
- toxikologie
- environmentální vědy
- NLK Publikační typ
- publikace WHO
... CONTENTS -- ENVIRONMENTAL HEALTH CRITERIA FOR CARBON TETRACHLORIDE -- PREAMBLE ix -- ABBREVIATIONS xviii ... ... SOURCES OF HUMAN AND ENVIRONMENTAL -- EXPOSURE 16 -- 3.1 Natural occurrence 16 -- 3.2 Anthropogenic sources ... ... procedures 16 -- 3.2.1.2 Indirect production 17 -- 3.2.1.3 Emissions 18 -- 3.2.2 Uses 18 -- Hi -- EHC 208: Carbon ... ... exposure 68 -- 7.4 Irritation 70 -- 7.4.1 Skin irritation 70 -- 7.4.2 Eye irritation 70 -- EHC 208: Carbon ... ... toxicity 88 -- 7.9.1 Dosing vehicles 88 -- 7.9.2 Diet 89 -- 7.9.3 Alcohol 90 -- 7.9.4 Enhancement of carbon ...
Environmental health criteria, ISSN 0250-863X No. 208
177 s. ; 22 cm
- Konspekt
- Lékařské vědy. Lékařství
- NLK Obory
- hygiena
- toxikologie
- environmentální vědy
- NLK Publikační typ
- publikace WHO
... SOURCES OF HUMAN AND ENVIRONMENTAL EXPOSURE 6 -- 4.1 Natural sources 6 -- 4.2 Anthropogenic sources 6 ... ... PREVIOUS EVALUATIONS BY INTERNATIONAL BODIES 25 -- REFERENCES 26 -- APPENDIX 1 — SOURCE DOCUMENT 32 - ...
Concise international chemical assessment document, ISSN 1020-6167 no. 46
42 s. : tab. ; 34 cm
- MeSH
- hodnocení rizik MeSH
- pracovní expozice MeSH
- sirouhlík škodlivé účinky MeSH
- vystavení vlivu životního prostředí MeSH
- Konspekt
- Veřejné zdraví a hygiena
- NLK Obory
- environmentální vědy
- chemie, klinická chemie
- veřejné zdravotnictví
- environmentální vědy
- environmentální vědy
- toxikologie
- přírodní vědy
- veřejné zdravotnictví
- NLK Publikační typ
- publikace WHO
