Lead isotope and trace element composition of urban soils in Mongolia
- Авторлар: Tserenpil S.1,2,3, Sapkota A.1, Liu C.3, Peng J.3, Liu B.3, Segebade P.1
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Мекемелер:
- Nuclear Application and Research Center
- Nuclear Research Center
- Institute of Geochemistry
- Шығарылым: Том 49, № 8 (2016)
- Беттер: 879-889
- Бөлім: Soil Chemistry
- URL: https://journals.rcsi.science/1064-2293/article/view/223463
- DOI: https://doi.org/10.1134/S1064229316080147
- ID: 223463
Дәйексөз келтіру
Аннотация
Lead (Pb) pollution in and around Ulaanbaatar is of national concern, given that the Mongolian capital is home to nearly half of the country’s entire population. By comparison, Mongolian countryside is a pristine environment because of its sparse population and low industrial activity. The concentration of Pb in urban soils (average of 39.1 mg kg–1) was twice the values found (average 18.6 mg kg–1) in background territories (i.e., Mongolian rural sites). Furthermore, Pb contamination was examined by using Pb stable isotopic composition, and covariance of Pb isotopic ratios showed two groups between rural and urban soils as pristine and disturbed sites. The 206Pb/207Pb ratio, the most prominent fingerprint for Pb pollution, was 1.163–1.185 for the urban whereas values for rural soils (1.186–1.207) were analogue to the regional Pb isotopic signatures. Local coal sources and their combustion products, one of the potential Pb pollution sources in Ulaanbaatar, have significant radiogenic properties in terms of Pb isotopic composition and revealed an average of 1.25 for 206Pb/207Pb and 19.551 for 206Pb/204Pb ratios. Thus, contributions from coal firing activity to Pb pollution lower than it was assumed, and smaller range of these values measured in urban soils may be attributed to the mixing of less radiogenic Pb as a constituent of the leaded gasolines.
Авторлар туралы
Sh. Tserenpil
Nuclear Application and Research Center; Nuclear Research Center; Institute of Geochemistry
Хат алмасуға жауапты Автор.
Email: tserenpil.sh@gmail.com
Түркия, Antalya, 07958; Ulaanbaatar, 14200; Guiyang, 550002
A. Sapkota
Nuclear Application and Research Center
Email: tserenpil.sh@gmail.com
Түркия, Antalya, 07958
C. Liu
Institute of Geochemistry
Email: tserenpil.sh@gmail.com
ҚХР, Guiyang, 550002
J. Peng
Institute of Geochemistry
Email: tserenpil.sh@gmail.com
ҚХР, Guiyang, 550002
B. Liu
Institute of Geochemistry
Email: tserenpil.sh@gmail.com
ҚХР, Guiyang, 550002
P. Segebade
Nuclear Application and Research Center
Email: tserenpil.sh@gmail.com
Түркия, Antalya, 07958