ORGANIC PERSISTENT TOXIC SUBSTANCES IN SOILS, WATERS AND SEDIMENTS ALONG AN ALTITUDINAL GRADIENT AT MT. SAGARMATHA, HIMALAYAS, NEPAL
Persistent Organic Pollutants (POPs) and Polycyclic Aromatic Hydrocarbons (PAHs) are important classes of compounds of serious environmental concern. These compounds were measured in waters, sediments and soils from several high altitude sites in the Sagarmatha National Park (Nepal) and included in the Himalayan ridge.
In water samples, low-level substituted PCBs and PBDEs, along with more volatile PAHs, were the most common contaminants. In sediment and soil samples, the PCB profile was mainly composed of medium-level chlorinated congeners and significantly correlated with altitude. The PAH profile for water and soil samples showed the main contribution of pyrogenic PAHs due to emissions of solid combustion, whereas the profile for sediments indicated the main contribution of pyrogenic PAHs from gasoline emissions. The PAH levels measured in Himalayan samples must be considered as low to medium contaminated, whereas the regarded Himalayan stations can be considered undisturbed remote areas concerning PCB, PBDE and OC compounds.
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Citation proposal
. ORGANIC PERSISTENT TOXIC SUBSTANCES IN SOILS, WATERS AND SEDIMENTS ALONG AN ALTITUDINAL GRADIENT AT MT. SAGARMATHA, HIMALAYAS, NEPAL. https://geoportal.mountaingenius.org/geonetwork/srv/api/records/0f88fb2a-a807-4b96-8854-b6c5bbfef88d |
Simple
- Date ( Creation )
- 2011-09-06T12:05:00
- Edition
- Presentation form
- Digital table
- Purpose
- This investigation represents the first published data on PBDEs and PAHs in high altitude samples collected in the Nepalese Himalayan region, while a number of papers regarding PTS compounds in soils and sediments collected in the Chinese side of the ridge (Kang et al., 2009; Li et al., 2006; Wang et al., 2006, 2008, 2009) have been already published.
- Status
- Completed
Originator
- Maintenance and update frequency
- As needed
- Keywords ( Theme )
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- water , sediment , soil , persistent organic pollutant
- Keywords ( Place )
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- World
- Access constraints
- Copyright
- Use constraints
- Copyright
- Other constraints
- Spatial representation type
- Vector
- Denominator
- 100000
- Metadata language
- eng
- Character set
- UTF8
- Topic category
-
- Boundaries
))
- Supplemental Information
- The information regards water and sediments collected in 2007 and 2008 in lakes and soils collected around the lakes.
- Reference system identifier
- WGS 1984
- Protocol
- WWW:LINK-1.0-http--link
- Name
- Description
- OnLine resource
- https://geoportal.mountaingenius.org/webapp/srv/en/resources.get?id=23389&fname=&access=private
- Protocol
- OGC:WMS-1.1.1-http-get-map
- Name
- Description
- Hierarchy level
- Collection session
- Statement
gmd:MD_Metadata
- File identifier
- 0f88fb2a-a807-4b96-8854-b6c5bbfef88d XML
- Metadata language
- eng
- Character set
- UTF8
- Date stamp
- 2011-09-06T12:12:09
- Metadata standard name
- ISO 19115:2003/19139
- Metadata standard version
- 1.0
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