https://www.selleckchem.com/pr....oducts/cl-amidine.ht
The source of Zn was tyre wear and traffic. Ni, Cr, Fe, and Cd were correlated to Zn and shared a common/similar origin. PCA suggested that Cu features quasi-independent behaviour. The Pb isotopic ratios of RSW indicated Pb enrichment originating from coal combustion, while the gasoline and diesel source of Pb was excluded. The Pb isotopic ratios characteristic for MW were in within the following ranges 1.152-1.165 (206Pb/207Pb), 2.050-2.085 (208Pb/206Pb), and 2.350-2.418 (208Pb/207Pb). The complex analysis of HMs origin confirmed th
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