Seasonal and long-term change in lead deposition in central Japan: evidence for atmospheric transport from continental Asia

Bellis, David J.; Satake, Kenichi; Ichii, Michiko; Zeng, Jiye; Tsuyoshi, Oizumi

doi:10.1016/j.scitotenv.2004.09.038

Cited by 31 publications

(27 citation statements)

References 21 publications

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“…In the present experiment, lead isotope ratios in 41 SPM samples collected during November 4-23, 2003, and January 1-9, 2004, and April [14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30]2004 were measured by HR-ICP-MS after microwave-assisted acid digestion. The results are plotted in Fig.…”

Section: Lead Isotope Ratios Of Spm Samplesmentioning

confidence: 71%

“…Certain lead ores and coals on the Asian continent often provide such thorogenic ratios, which were not observed for ores and coals used in Japan. 15,16) These results suggest the long-range transport of atmospheric lead from Asian continent (China, Korean Peninsula, and Russia) to Japan, although further detailed study on the long-range transport should be carried out in future.…”

Section: Lead Isotope Ratios Of Spm Samplesmentioning

confidence: 84%

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Lead Isotopic Compositions of Atmospheric Suspended Particulate Matter in Nagoya City as Measured by HR-ICP-MS

Zhu

Kashiwagi

Sakaguchi

et al. 2006

Journal of Nuclear Science and Technology

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Lead isotope ratios in atmospheric suspended particulate matter (SPM) collected in Nagoya City were measured by high resolution inductively coupled plasma mass spectrometry (HR-ICP-MS) after microwave-assisted acid digestion. Before analyzing SPM samples, the present method was evaluated by analyzing standard reference material (SRM 981) for common lead isotopic standard from NIST. The analytical results for 207 Pb/ 206 Pb and 208 Pb/ 206 Pb for SRM 981 were 0:9160AE0:0006 and 2:136AE0:003, respectively, which were almost coincident with the certified values of 0:91464AE0:00033 and 2:1681AE0:0008, respectively. The lead isotope ratios in SPM samples collected daily in Nagoya University were analyzed in order to elucidate their origins, and the results were compared with various kinds of ores. It was found that most SPM samples showed some mixed compositions of lead isotope ratios of lead ores from USA and Australia, which suggested utilization of large amount of lead ores imported from these two countries. On the other hand, some samples showed mixed compositions of lead ores from Asian continent, which might be resulted from the long-range transportation of atmospheric SPM from Asian continent to Japan.

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Section: Lead Isotope Ratios Of Spm Samplesmentioning

confidence: 71%

Section: Lead Isotope Ratios Of Spm Samplesmentioning

confidence: 84%

Lead Isotopic Compositions of Atmospheric Suspended Particulate Matter in Nagoya City as Measured by HR-ICP-MS

Zhu

Kashiwagi

Sakaguchi

et al. 2006

Journal of Nuclear Science and Technology

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“…Conversely, lead and cadmium deposition in Hiroshima (western Japan) had no clear seasonal variation (Takeda et al 2000). In contrast, Bellis et al (2005) reported higher lead deposition in winter and spring (November to May) in Niigata, which is 140 km NNE of GT and on the west coast. This trend is a result of long-range transport of air masses from continental Asia.…”

Section: Seasonal Variation In Lead and Cadmium Depositionmentioning

confidence: 93%

Atmospheric lead and cadmium deposition within forests in the Kanto district, Japan

Itoh

Miura

Yoshinaga

2006

Journal of Forest Research

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Atmospheric lead and cadmium deposition in bulk precipitation and throughfall was investigated at four forests in the Kanto district, Japan, to assess the impact of human activities on the environmental health of forests. Annual lead and cadmium depositions in bulk precipitation ranged from 8.9 to 25.7 g ha −1 year −1 and from 0.77 to 1.30 g ha −1 year −1 , respectively. Lead and cadmium deposition increased in the summer at every forest due to large amounts of rainfall. At one of the forests, the depositions were also high in the winter due to heavy snowfall. These depositions were similar to recent depositions observed at other rural and urban sites in Japan and several forests in Europe and North America after 1990. These results indicate that although anthropogenic lead and cadmium are deposited at these rates over wide areas, depositions are still higher than in remote areas.

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“…The isotopic data for some candidates of Pb source are plotted in the figure. The candidates were suggested by some researchers, 8,9,20,21) including a geochemical reference sample of soil from Machida, Tokyo (JSO-1, abbreviated as 'S' hereafter, and in Fig. 2(a) and 2(b)) issued by Geological Survey of Japan, the National Institute of Advanced Industrial Science and Technology, Japan, atmospheric particle matter collected in central Tokyo in 1995 ('P'), particle matter collected from gasoline and diesel automobile exhaust gas in 2005 ('G' and 'D' respectively), and fly ash from a municipal incinerator located at 35 km west away from central Tokyo in 2005 ('I').…”

Section: Pb/mentioning

confidence: 99%

“…[1][2][3][4][5] It is estimated that anthropogenic Pb pollution accounts for 96-99% of total atmospheric Pb deposition, 6,7) making emissions of this toxic heavy metal a major concern for human and ecological health. In Japan, based on the Pb isotope composition studies, motor vehicle exhaust, fly ash from municipal incinerators, 8) long-range transport from continental Asia, and natural component of soil 9) are considered as the dominant sources of the Pb in atmosphere. Because there is no fractionation of lead isotopes during industrial and environmental processes and since virtually all of the Pb now present in the atmosphere originates from industrial source, 6) isotopic signature of Pb in the atmosphere reflects the source of supply.…”

Section: Introductionmentioning

confidence: 99%

Lead Isotope Ratio in Rainfall Collected by a Sequential Sampler in Central Tokyo

Hattori¹,

Shimamura²,

Iwashita³

et al. 2008

Journal of Nuclear Science and Technology

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Rainfall at central Tokyo was sequentially collected with a 1-mm precipitation interval. Lead (Pb) concentrations and isotopic compositions of each fraction were precisely determined by an inductively coupled plasma-quadrupole mass spectrometry and a multiple collector-inductively coupled plasma-mass spectrometry, respectively. The results showed that (1) Pb concentration in rainfall decayed according to a power law function along with rainfall depth; (2) Pb isotope ratios clearly changed during a single rainfall event; (3) mixing model having four or more end members could explain the variations of Pb isotope ratio; (4) Pb in rainfall was probably affected by diesel vehicle emission control commenced on 1 st October 2003. Concerning (3), candidates of end member were estimated as local materials, e.g., natural soil components, airborne particle matter, automobile exhaust gases and fly ash from a municipal incinerator.

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Seasonal and long-term change in lead deposition in central Japan: evidence for atmospheric transport from continental Asia

Cited by 31 publications

References 21 publications

Lead Isotopic Compositions of Atmospheric Suspended Particulate Matter in Nagoya City as Measured by HR-ICP-MS

Lead Isotopic Compositions of Atmospheric Suspended Particulate Matter in Nagoya City as Measured by HR-ICP-MS

Atmospheric lead and cadmium deposition within forests in the Kanto district, Japan

Lead Isotope Ratio in Rainfall Collected by a Sequential Sampler in Central Tokyo

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