TY - JOUR
T1 - Tracking historical mobility behavior and sources of lead in the 59-year sediment core from the Huaihe River using lead isotopic compositions
AU - Wang, Jie
AU - Liu, Guijian
AU - Liu, Houqi
AU - Lam, Paul K.S.
PY - 2017/10
Y1 - 2017/10
N2 - A historical perspective of past 59 years (1955–2014) for contamination and isotopic composition of Pb in sediment core system of the Huaihe River, Huainan City, Anhui Province of China is presented. Detailed investigation regarding changes in Pb sources, enrichment factor, sequential extraction and isotopic analysis revealed that high Pb concentrations were detected along the core, especially during the first two decades (1955–1974). Large variations in Pb isotopic compositions were observed, with 206Pb/207Pb and 208Pb/207Pb values ranging from 1.1504–1.1694, and 2.0817–2.1380, respectively. Diverse Pb sources were identified for sediment contamination over the time. Among anthropogenic sources, metallurgic dust and leaded petrol were on top during 1955–1974, especially when the Great Leap Forward Movement (1958–1960) was in progress in China, the time numerous small industries were established without wastewater treatment facility. However, coal and coal combustion were recognized as the primary sources of Pb emissions for the recent four decades (1974–2014) due to tremendous increase of coal consumption for power and heat generation. Unleaded vehicle exhaust, waste incineration and industrial emission were also sources of Pb during the years 1974–2014. Our estimates based on geochemical and lead isotopic approaches have shown that anthropogenic Pb contributions varied from 4.35 to 92.01%, and 13.28–99.06%, respectively. Assessment of lead speciation indicated an overwhelming presence of reducible fraction (Fe-Mn hydro-(oxides)) in the sediment core, except during 1995–1997, which was thought to be affected by water pollution accidents caused by heavy rainfall.
AB - A historical perspective of past 59 years (1955–2014) for contamination and isotopic composition of Pb in sediment core system of the Huaihe River, Huainan City, Anhui Province of China is presented. Detailed investigation regarding changes in Pb sources, enrichment factor, sequential extraction and isotopic analysis revealed that high Pb concentrations were detected along the core, especially during the first two decades (1955–1974). Large variations in Pb isotopic compositions were observed, with 206Pb/207Pb and 208Pb/207Pb values ranging from 1.1504–1.1694, and 2.0817–2.1380, respectively. Diverse Pb sources were identified for sediment contamination over the time. Among anthropogenic sources, metallurgic dust and leaded petrol were on top during 1955–1974, especially when the Great Leap Forward Movement (1958–1960) was in progress in China, the time numerous small industries were established without wastewater treatment facility. However, coal and coal combustion were recognized as the primary sources of Pb emissions for the recent four decades (1974–2014) due to tremendous increase of coal consumption for power and heat generation. Unleaded vehicle exhaust, waste incineration and industrial emission were also sources of Pb during the years 1974–2014. Our estimates based on geochemical and lead isotopic approaches have shown that anthropogenic Pb contributions varied from 4.35 to 92.01%, and 13.28–99.06%, respectively. Assessment of lead speciation indicated an overwhelming presence of reducible fraction (Fe-Mn hydro-(oxides)) in the sediment core, except during 1995–1997, which was thought to be affected by water pollution accidents caused by heavy rainfall.
KW - Anthropogenic Pb contribution
KW - Geochemical fraction
KW - Stable Pb isotopes
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UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85020717193&origin=recordpage
U2 - 10.1016/j.chemosphere.2017.06.022
DO - 10.1016/j.chemosphere.2017.06.022
M3 - RGC 21 - Publication in refereed journal
SN - 0045-6535
VL - 184
SP - 584
EP - 593
JO - Chemosphere
JF - Chemosphere
ER -