Zn isotopes in the suspended load of the Seine River, France: Isotopic variations and source determination

Tracing of anthropogenic zinc sources in coastal environments using stable isotope composition

“…This deviation may be explained by the influence of additional sources on the isotopic compositions in the region south of the bay, linked to the intense urban expansion and industrial development in the watershed of Sepetiba bay after the 1970's (Molisani et al, 2004). The δ 66 Zn JMC values of the most common urban anthropogenic sources tend to be lower than the average of silicate rocks (+0.28 ±0.05‰, Chen et al, 2013), such as tire wear (+0.04 ±0.2‰, Thapalia et al, 2010), vehicle emission (-0.87 to +0.07, Gioia et al, 2008), urban runoff (from +0.13 to +0.15‰, Chen et al, 2009) and wastewaters and sludge (~0.1‰; Chen et al, 2009). These source differences may explain the lighter isotopic signatures in the T4 and T5 cores in comparison with T3 core for similar EF values (Fig.4B).…”

Stable Isotopes of Transition and Post-Transition Metals as Tracers in Environmental Studies

“…Thus Zn stable isotopes may be useful for distinguishing natural and anthropogenic sources of metals in both hydrologic and atmospheric systems. An interesting example of the usefulness of Zn isotopes to trace contaminant sources is the work of Chen et al (2008Chen et al ( , 2009) who studied Zn isotope systematics of the Seine River of France. The Seine River is one of the most anthropogenically impacted rivers in Europe, with high relative concentrations of metals (Zn, Cu, Pb, Ni, etc.)…”

The influence of weathering and soil organic matter on Zn isotopes in soils

“…There is no local contamination from industry or urban areas in the vicinity of our site, indicating that Zn isotope fractionation in these soils is unlikely to be associated with polluted Zn sources Cloquet et al, 2006Cloquet et al, , 2008Juillot et al, 2011;Sivry et al, 2008;Chen et al, 2008Chen et al, , 2009Bigalke et al, 2010;Fekiacova et al, 2015). Atmospheric dust input on Icelandic soils is dominated by volcanic material mainly basaltic from volcanic ash deposition during eruption or resuspended volcanic material (Sigfusson et al, 2008;Wittmann et al, 2017).…”