Zinc in soil reflecting the intensive coal mining activities: Evidence from stable zinc isotopes analysis

Wang, Dandan; Zheng, Liugen; Ren, Mengxi; Li, Chang; Dong, Xianglin; Wei, Xiangpin; Weijun, Zhou; Cui, Jiasheng

doi:10.1016/j.ecoenv.2022.113669

Cited by 11 publications

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“…This condition differs from that of our subtropical oligotrophic lake, where primary production was low, , most likely decreasing the degree of Zn fractionation as a result of biological uptake. Previous studies have also demonstrated that lighter Zn isotopes are preferentially integrated into atmospheric emissions during high-temperature processes. , For example, anthropogenic Zn from urban and industrial atmospheric emissions, primarily released by smelting and mining, ,, vehicular traffic, ,, and coal combustion, exhibits lighter isotope compositions ranging from −0.41 to −0.22‰, −0.24 to −0.07‰, and −0.61 to −0.56‰, respectively (Table S4). Herein, the linear correlation between the δ 66 Zn IRMM values and 1/Zn could be attributed to binary mixing between a natural source with a higher δ 66 Zn IRMM value and an anthropogenic source with a lower δ 66 Zn IRMM value (Figure b).…”

Section: Resultsmentioning

confidence: 91%

“…Previous studies have also demonstrated that lighter Zn isotopes are preferentially integrated into atmospheric emissions during high-temperature processes. 27,79 For example, anthropogenic Zn from urban and industrial atmospheric emissions, primarily released by smelting and mining, 48,80,81 vehicular traffic, 8,82,83 and coal combustion, 84 exhibits lighter isotope compositions ranging from −0.41 to −0.22‰, −0.24 to −0.07‰, and −0.61 to −0.56‰, respectively (Table S4). Herein, the linear correlation between the δ 66 Zn IRMM values and 1/Zn could be attributed to binary mixing between a natural source with a…”

Section: Environmental Science and Technologymentioning

confidence: 99%

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Lake Sediment Archive Reveals a Distinct Response to Anthropogenic Pb and Zn Deposition with Historical Periods: Pb–Zn Isotope Evidence

Xia,

Liu,

Liu

et al. 2023

Environ. Sci. Technol.

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Anthropogenic activities release large quantities of heavy metals into the atmosphere. In China, the input of these heavy metals through local and trans-boundary atmospheric deposition is poorly understood. To assess this issue, herein, we use Pb and Zn isotopes to constrain the sources of Pb and Zn in a 210Pb-dated sediment core collected from the enclosed lake in South China. We observed a progressive shift toward higher 208Pb/206Pb and Pb fluxes (0.79–4.02 μg·cm–2·a–1) from 1850 to 1950 and a consistent decrease in δ66ZnIRMM (as low as −0.097 ± 0.030‰) coupled with an increase in Pb (1.74–3.36 μg·cm–2·a–1) and Zn (8.07–10.44 μg·cm–2·a–1) fluxes after 1980. These distinguished isotopic signals and flux variations reveal the presence of trans-boundary Pb since 1900, with the addition of local industrial Pb and Zn pollution after 1980. Up to 72.3% of Pb deposited at our site can be attributed to long-distance transportation from previously industrialized countries, resulting in a noteworthy legacy of Pb in China since 1900. Despite the phasing out of leaded gasoline, Chinese gasoline still contributes an average of 20.9%. The contribution of China’s mining and smelting activities to Pb has increased steadily since 1980 and remained stable at an average of 25.1% since 2000.

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