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Persistent Pb Pollution in Central East Antarctic Snow: A Retrospective Assessment of Sources and Control Policy Implications

Cited 2 time in scopus
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Title
Persistent Pb Pollution in Central East Antarctic Snow: A Retrospective Assessment of Sources and Control Policy Implications
Other Titles
지속된 동남극 중부 강설의 납 오염: 오염원과 통제 정책의 의의에 대한 소급 평가
Authors
Chang, Chaewon
Sungmin Hong
Shugui Hou
Hideaki Motoyama
Sanghee Lee
Hur, Soon Do
Han, Yeongcheol
Han, Changhee
Subject
Engineering; Environmental Sciences & Ecology
Keywords
Dome A; Dome Fuji; Pb emission; Pb isotope
Issue Date
2016
Citation
Chang, Chaewon, et al. 2016. "Persistent Pb Pollution in Central East Antarctic Snow: A Retrospective Assessment of Sources and Control Policy Implications". ENVIRONMENTAL SCIENCE & TECHNOLOGY, 50(22): 12138-12145.
Abstract
Well-defined variations in the enrichments and isotopic compositions of Pb have been observed in snow from Dome Fuji and Dome A in the central East Antarctic Plateau (EAP) over the past few decades. The Pb isotopic fingerprints indicate that the rapid increase in Pb enrichments from the mid-1970s, reaching a peak in ∼1980, is due to the massive use of leaded gasoline in northern South America, especially Brazil. Since then, they show a continuous decline, mostly due to the significant removal of the Pb additives from gasoline in Brazil in the 1980s and, subsequently, in Argentina and Chile in the 1990s. After the phase-out of Pb in gasoline, Cu smelting in Chile has become the major source of Pb, contributing ∼90% to the total Pb emissions in northern South America in 2005. Nevertheless, Pb pollution in the central EAP declined substantially until recently as a result of the regulatory efforts to curb toxic trace metal emissions from the Cu industry in Chile. However, more than 90% of the Pb in the most remote places on Earth are still of anthropogenic origin, highlighting the need for the continuation of environmental regulations for the further reduction of Pb emissions.
URI
http://repository.kopri.re.kr/handle/201206/5784
DOI
http://dx.doi.org/10.1021/acs.est.6b03209
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