Linked Life Data

12046646

Source:http://linkedlifedata.com/resource/pubmed/id/12046646

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
2002-6-5
pubmed:abstractText
Based on the quantitative and qualitative analysis of sixteen Polycyclic Aromatic Hydrocarbons (PAHs) with GC and GC-MSD, the concentrate distribution and transportation characteristics of PAHs in suspended particulate matter (SPM) and surface sediments (SS) from the Pearl River Estuary were studied. Whether in SPM or in SS, the concentration distribution of PAHs were characterized by acenaphthene (mean 55.5 microg/g in SPM, 226 ng/g in SS) with subordinate amounts of the tri- and tetra-cycle PAHs such as fluorene, fluoranthene, phenaphene and pyrene. However, PAHs had different composition and concentration in SPM and SS. Pentacyclic PAHs appeared in SS and seldom in SPM because of their low solubility and high molecular weight. The concentrations of the tri-, tetracyclic PAHs in SPM were 100-300 times higher than those in SS. The total PAHs varied from 12-281 microg/g (mean 77 microg/g) in SPM and 208-1849 ng/g (mean 537 ng/g) in SS respectively. There were similar correlations between the concentrations of PAHs in SPM and salinity, and between the distance of the stations from the river outlet moving seawards and the concentrations of PAHs. These indicated that PAHs were degraded or transported along with the salinity gradient in SPM and the distance from the river outlet in SS. It was also suggested that the sources of these PAHs are from sewage and shipping discharge-pollutants. Pearl River Estuary had been lightly contaminated by PAHs.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
1093-4529
pubmed:author
pubmed:issnType
Print
pubmed:volume
37
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
451-63
pubmed:dateRevised
2009-8-14
pubmed:meshHeading
pubmed:year
2002
pubmed:articleTitle
Distribution and transportation of polycyclic aromatic hydrocarbons in suspended particulate matter and surface sediment from the Pearl River Estuary.
pubmed:affiliation
Key Laboratory of Marine Environmental Science for the Ministry of Education, Environmental Science Research Center, Xiamen University, PR China.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't