硫酸塩エアロゾル分析装置の開発と性能評価

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概要

• 論文の詳細を見る

• An automated instrument which made possible to analyze of an elemental sulfur in particulate matters in real time was presented. Sulfur component in the particles (mainly sulfates) was introduced to flame chimney and converted to sulfur monoxide by reduction in a hydrogen-helium mixed gas. Then, sulfur monoxide formed is further oxidized in the reaction cell by ozone supplied from an ozonizer. The resultant excited state sulfur dioxide emits light and the concentration of elemental sulfur can be determined by using a photoluminescence detector. The calibration curve during 1.6 to 95 ppb showed clear linearity and the detection limit was estimated around 1.2 ppb for this system. The performance and feasibility of this method to the aerosol measurement were evaluated with ammonium sulfate aerosols generated by a spray drying method, and the concentration of the aerosols was controlled by changing spray pressure from 98 to 294 kPa. Size distribution of the particles was measured by EAA, and the volume concentration was calculated from the data. The results points to the excellent agreement between the values by VSCD (Vacuum-type Sulfur Chemiluminescence Detector) and those by EAA. VSCD showed excellent performance and feasibility for the automated real-time measurement. In the last, the nitrogen-oxygen addition method was described for the measurement of sulfur in exhaust gas from diesel engine as the example of appication.

• 日本エアロゾル学会の論文
• 2002-09-20

著者

• 西村 隆雄

  ファームテック

• 吉山 秀典

  産業技術総合研究所

• 中村 篤志

  ファームテック(株)

• 西村 隆雄

  ファームテック(株)

• 野中 知行

  ファームテック(株)

• 吉山 秀典

  産業技術総合研究所 実環境計測・診断研究ラボ

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