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- Title
Daily-Basis Observation of Gaseous Mercury (Hg<sup>0</sup>) Concentrations in an Industrialized City in Japan and Introducing Two New Parameters to Evaluate the Risks of Gaseous Mercury.
- Authors
Takata, Nami; Kamo, Taisei; Iwamoto, Yuta; Aikawa, Masahide
- Abstract
The daily mean concentration of gaseous mercury (Hg0) in an industrialized city in Japan was determined during almost 2 years. The Hg concentration largely fluctuated daily. By applying fast Fourier transform (FFT) analysis, different annual and seasonal variation were clarified. In spite of the large daily fluctuation and different annual and seasonal variations, it was noteworthy that an increasing trend was shown; however, it was strongly suggested that it is necessary to continue the determination for a longer duration. The daily fluctuation also implied the possibility that the precipitation was related to the variation in the Hg concentration. We introduced two new parameters for understanding and evaluating the actual potential risk, potential exposure, as well as the calculated—not actual—probability of risk to be suffered, the strength of the potential risk. At our observation site, the potential exposure was mainly controlled by the frequency of the wind from each direction; in contrast, the strength of the potential exposure was compositely determined by the Hg concentration as well as the wind speed.
- Subjects
JAPAN; MERCURY; FAST Fourier transforms; WIND speed
- Publication
Water, Air & Soil Pollution, 2023, Vol 234, Issue 9, p1
- ISSN
0049-6979
- Publication type
Article
- DOI
10.1007/s11270-023-06578-0