Abstract：
:Lead (Pb) isotopic composition analysis is a useful tool to accurately identify the origin of Pb in environmental media. The existing calculation method of the contribution of Pb sources from Pb isotope ratios greatly restricted the development of Pb contamination source apportionment. In the present study, a new distance model for calculating the mass proportion of Pb sources, which is based on the distance between the samples and the possible Pb sources in the Pb isotope ratios plot, was presented. The inverse distance model was applied to calculate the contribution proportion of two Pb sources in three previous studies. The average absolute differences between the proportions calculated by the conventional binary mixing equation and the inverse distance model were 0.21%, 1% and 1.9%, respectively, indicating that the new model agreeably calculated the contribution of two Pb sources. The anthropogenic sources proportion (52%) calculated by the inverse distance model of three Pb sources to park soil Pb in Shanghai was comparable to the result that was calculated by the conventional ternary mixing equation (53%), which showed the validity of the new model in calculating the contribution proportion of three Pb sources. Rational results were obtained by the inverse distance model in calculating the contribution of four Pb sources, illustrating that the new model has potential use in calculating the apportionment of four or more Pb sources. These results suggest that the inverse distance model is a simple and efficient approach for calculating the contribution proportion of various Pb contamination sources, and provides a prospective in the study of this field.
journal_name
Environ Resjournal_title
Environmental researchauthors
Deng W,Liu W,Wen Y,Li Xdoi
10.1016/j.envres.2020.109475subject
Has Abstractpub_date
2020-06-01 00:00:00pages
109475eissn
0013-9351issn
1096-0953pii
S0013-9351(20)30368-6journal_volume
185pub_type
杂志文章abstract：:Fimbristylis dichotoma, Ammannia baccifera and their co-plantation consortium FA independently degraded Methyl Orange, simulated dye mixture and real textile effluent. Wild plants of F. dichotoma and A. baccifera with equal biomass showed 91% and 89% decolorization of Methyl Orange within 60h at a concentration of 50p...
journal_title：Environmental research
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journal_title：Environmental research
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journal_title：Environmental research
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pub_type： 杂志文章
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pub_type： 杂志文章
doi：10.1016/j.envres.2019.03.045
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journal_title：Environmental research
pub_type： 杂志文章
doi：10.1016/j.envres.2016.05.034
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journal_title：Environmental research
pub_type： 杂志文章
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pub_type： 杂志文章
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pub_type： 杂志文章
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更新日期：2021-02-01 00:00:00
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journal_title：Environmental research
pub_type： 杂志文章
doi：10.1006/enrs.1995.1073
更新日期：1995-11-01 00:00:00
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journal_title：Environmental research
pub_type： 杂志文章,评审
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更新日期：2018-07-01 00:00:00
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journal_title：Environmental research
pub_type： 杂志文章
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更新日期：2000-11-01 00:00:00
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journal_title：Environmental research
pub_type： 杂志文章
doi：10.1016/j.envres.2014.04.005
更新日期：2014-07-01 00:00:00
