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Occupational Exposure Limits for indium compounds: Personal indium exposure concentration in respirable dusts and serum indium level

Research Project

Project/Area Number 26860443
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Hygiene and public health
Research InstitutionKeio University

Principal Investigator

Iwasawa Satoko  慶應義塾大学, 医学部, 講師 (10570369)

Research Collaborator Omae Kazuyuki  慶應義塾大学, 医学部, 教授 (60118924)
Nakano Makiko  慶應義塾大学, 医学部, 講師 (70384906)
Tanaka Shigeru  十文字学園女子大学, 人間生活学部, 教授 (60171758)
Project Period (FY) 2014-04-01 – 2016-03-31
Project Status Completed (Fiscal Year 2015)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2015: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2014: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywordsインジウム / 産業疫学 / 生物学的モニタリング / 先端産業 / 個人曝露濃度
Outline of Final Research Achievements

The aim of this study was to assess the relationship between indium exposure concentration in the respirable dust fraction (In-E) and indium in serum (In-S) in workers. A total of 39 workers were studied. The study subjects were categorized into 3 groups, namely, smelting workers (n=7), ITO workers (n=6) in an ITO grinding plant, and other workers (n=26).
In-E and In-S ranged from 0.039-24.0 μg/m3 and 0.1- 8.50 μg/L. The simple regression equation was log(In-S) = 0.322 × log(In-E) - 0.443. The simple correlation coefficients for the smelting workers, ITO workers and other workers were 0.489, 0.812 and 0.163, respectively. The differences in the relationships among the three groups suggest that In-S may vary with the chemical form to which the workers were exposed. In-E and In-S seem to be positively correlated, but more data are needed to draw final conclusions.

Report

(3 results)
  • 2015 Annual Research Report   Final Research Report ( PDF )
  • 2014 Research-status Report
  • Research Products

    (5 results)

All 2015 2014

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (4 results)

  • [Journal Article] Pulmonary effects in workers exposed to indium metal: a cross-sectional study2015

    • Author(s)
      Makiko Nakano, Akiyo Tanaka, Miyuki Hirata, Satoko Iwasawa, and Kazuyuki Omae
    • Journal Title

      Journal of Occupational Health

      Volume: 印刷中

    • NAID

      130005106131

    • Related Report
      2014 Research-status Report
    • Peer Reviewed
  • [Presentation] インジウムの吸入性粉塵個人曝露濃度と生物学的モニタリング指標との関係2015

    • Author(s)
      岩澤聡子、中野真規子、田中昭代、平田美由紀、田中 茂、宮内博幸、東久保一朗、川澄八重子、大前和幸
    • Organizer
      第88回日本産業衛生学会
    • Place of Presentation
      大阪市
    • Year and Date
      2015-05-13 – 2015-05-16
    • Related Report
      2014 Research-status Report
  • [Presentation] インジウムの吸入性粉塵個人曝露濃度と生物学的モニタリング指標との関係2015

    • Author(s)
      岩澤聡子、中野真規子、田中昭代、平田美由紀、田中 茂、宮内博幸、東久保一朗、川澄八重子、大前和幸
    • Organizer
      第88回日本産業衛生学会
    • Place of Presentation
      グランフロント大阪ナレッジキャピタル(大阪府大阪市)
    • Year and Date
      2015-05-13
    • Related Report
      2015 Annual Research Report
  • [Presentation] インジウム:吸入性粉塵個人曝露濃度と生物学的モニタリング指標の関係2014

    • Author(s)
      大前和幸、中野真規子、岩澤聡子、田中昭代、平田美由紀、田中 茂、宮内博幸、東久保一朗、川澄八重子
    • Organizer
      日本産業衛生学会 第42回産業中毒・生物学的モニタリング研究会
    • Place of Presentation
      松本市
    • Year and Date
      2014-10-25 – 2014-10-26
    • Related Report
      2014 Research-status Report
  • [Presentation] Personal indium exposure concentration in respirable dusts and serum indium level2014

    • Author(s)
      Satoko Iwasawa, Makiko Nakano, Hiroyuki Miyauchi, Shigeru Tanaka, Akiyo Tanaka, Miyuki Hirata and Kazuyuki Omae
    • Organizer
      The 21st Asian Conference on Occupational Health
    • Place of Presentation
      福岡市
    • Year and Date
      2014-09-02 – 2014-09-04
    • Related Report
      2014 Research-status Report

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Published: 2014-04-04   Modified: 2017-05-10  

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