Development of simple pyrolysis correction method and evaluation of concentration trend of carbonaceous species in atmospheric fine particles
Project/Area Number |
22710020
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Research Category |
Grant-in-Aid for Young Scientists (B)
|
Allocation Type | Single-year Grants |
Research Field |
Environmental dynamic analysis
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Research Institution | Center for Environmental Science in Saitama |
Principal Investigator |
HASEGAWA Shuichi 埼玉県環境科学国際センター, 大気環境担当, 主任 (00391144)
|
Project Period (FY) |
2010 – 2011
|
Project Status |
Completed (Fiscal Year 2011)
|
Budget Amount *help |
¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2011: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2010: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
|
Keywords | 環境計測 / 大気エアロゾル / 元素状炭素 / 有機炭素 / 熱分離法 / 熱分離・光学補正法 |
Research Abstract |
Thermal method, usual measurement method of carbonaceous component of atmospheric fine particles, causes overestimation of elemental carbon(EC) due to pyrolysis of organic carbon(OC). Thermal optical method is capable of pyrolysis correction ; however, the instrument is expensive. In this study, a method that produces more precise EC concentration than usual by measurement of reflection intensity for a filter sample after sampling was developed. EC was measured by the developed method for the samples measured by thermal method previously, and annual trend of EC was reevaluated. EC was decreased compared to the data by thermal method in accordance with strengthened measures to exhaust gas of diesel vehicles.
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Report
(3 results)
Research Products
(1 results)