AI Article Synopsis
- A sediment core was collected near the Daya Bay nuclear power plant to study the environmental impact of its operations, using (210)Pbex dating and various radiochemical analyses.
- Analysis highlighted that the nuclear power plant did not introduce new radioactivity into the sediment, as indicated by low levels of (137)Cs.
- The study found significant changes in ecological conditions after the cooling water from the plant was introduced, correlating with key operational dates of the Daya Bay NPP and LNPP Phase I.
Article Abstract
A sediment core was collected and dated using (210)Pbex dating method off the waterspout of nuclear power base of Daya Bay, northeastern South China Sea. The γ-emitting radionuclides were analyzed using HPGe γ spectrometry, gross alpha and beta radioactivity as well as other geochemical indicators were deliberated to assess the impact of nuclear power plants (NPP) operation and to study the past environment changes. It suggested that NPP provided no new radioactivity source to sediment based on the low specific activity of (137)Cs. Two broad peaks of TOC, TC and LOI accorded well with the commercial operations of Daya Bay NPP (1994.2 and 1994.5) and LNPP Phase I (2002.5 and 2003.3), implying that the mass input of cooling water from NPP may result into a substantial change in the ecological environment and Daya Bay has been severely impacted by human activities.
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| http://dx.doi.org/10.1016/j.jenvrad.2015.03.018 | DOI Listing |
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