Historical record of metal accumulation and lead source in the southeastern coastal region of Korea.
Mar Pollut Bull
; 74(1): 441-5, 2013 Sep 15.
Article
in En
| MEDLINE
| ID: mdl-23838415
ABSTRACT
Concentrations of heavy metals and Pb isotopes were measured in the 1-M HCl leaching fraction of core sediments spanning the last 400 years. This sedimentary record of pollution history in metal concentrations shows a good correlation with the increases in industrialization, urbanization, and energy consumption since 1901s. Notably, the Pb concentration and the (207)Pb/(206)Pb and (208)Pb/(206)Pb ratios were constant before the 1910s (16.7 µg/g, 0.844, and 2.098, respectively), whereas they increased steadily up to 21.9 µg/g, 0.848, and 2.101 after the 1910s. The correlations between Pb isotope ratios ((206)Pb, (207)Pb, and (208)Pb) showed different linear regression trends for core sediments before and after the 1910s, indicating differences in Pb sources. Our interpretation suggests that the source of anthropogenic Pb in Korean coastal region and the Yellow Sea shelf was presumed to be Chinese coals or ores, which have also played a major role as sources of atmospheric particulate Pb.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Water Pollutants, Chemical
/
Water Pollution, Chemical
/
Environmental Monitoring
/
Metals
Country/Region as subject:
Asia
Language:
En
Journal:
Mar Pollut Bull
Year:
2013
Document type:
Article