Isotopic signatures and source apportionment of Pb in ambient PM<sub>2.5</sub>.

Sci Rep · 2022 · PMC8921186 · PMID 35288600

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an increasing trendno p-value reported

Moreover, it should be noted that both 206 Pb/ 207 Pb and 208 Pb/ 207 Pb exhibited an increasing trend and moved toward the case representing EA continental outflows (as shown in Fig. 2 ) during the winter monsoon seasons.

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