Dechloranes in atmosphere and its cross-border pollution

2015 Fiscal Year Final Research Report

• Project/Area Number: 26860452
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Hygiene and public health
• Research Institution: Osaka Prefectural Institute of Public Health
• Principal Investigator: Kakimoto Kensaku 大阪府立公衆衛生研究所, その他部局等, 研究員 (40435889)
• Project Period (FY): 2014-04-01 – 2016-03-31
• Keywords: 塩素系難燃剤 / 大気 / アジア / ナノ粒子 / デクロランプラス

Outline of Final Research Achievements

Dechloranes are chlorinated flame retardant and we revealed that the atmospheric pollution level in Japan and other Asian countries. Among dechlorane compounds, Dechlorane Plus (DP) alone was detected from any samples. The atmospheric concentration of DP in Japanese city has the correlation with the population size of sampling city. This result indicates that the main DP contamination source is
closely linked with people's lives in Japan. The particle size distributions of dechloranes were determined. For collecting PM, a PM0.1 air sampler equipped with six-stage filters was used. Particulate matter (PM) was collected in October and January. The particle size distribution of DP was revealed for the first time and the approximately 70% of DP exist in <2.5 μm fractions and 10% of DP exist in <0.1 μm fractions of PM samples.

Free Research Field

衛生化学