Perylene as an indicator of land-based plant biomarkers in the southwest Caspian Sea.
Mar Pollut Bull
; 80(1-2): 124-31, 2014 Mar 15.
Article
in En
| MEDLINE
| ID: mdl-24486042
ABSTRACT
In this study, 84 surface sediment samples, from 28 Iranian rivers, 45 surface sediment samples and 31 samples from one core in the southwest of the Caspian Sea were collected and analyzed for polycyclic aromatic hydrocarbons (PAHs). The results showed high variability of perylene in coastal surface sediments (1.3-123.6 ng g⻹ dw) and river sediments (0.5-111.1 ng g⻹ dw). Core samples revealed high levels of perylene which increased with depth. Three diagnostic ratios (DRs) for source identification of perylene (Per/TPAH, Per/PAI and Py/Per) revealed a dominance of biogenic inputs to the surface layers (coasts and rivers) and diagenetic production of perylene in the sediment core. Hyrcanian forests with humid climates favor wood-degrading fungi and the production of perylene and its precursors. Biogenic production of perylene as a land plant derived biomarker can be used for the reconstruction of paleoclimatic conditions of the southwest Caspian Sea.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Perylene
/
Water Pollutants, Chemical
/
Environmental Monitoring
Language:
En
Journal:
Mar Pollut Bull
Year:
2014
Document type:
Article
Affiliation country:
Publication country:
ENGLAND
/
ESCOCIA
/
GB
/
GREAT BRITAIN
/
INGLATERRA
/
REINO UNIDO
/
SCOTLAND
/
UK
/
UNITED KINGDOM