In situ Quantification of Ammonium Sulfate in Single Aerosol Droplets by Means of Laser Trapping and Raman Spectroscopy
Analytical Sciences 29 巻 12 号
1223-1226 頁
2013-12 発行
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| ファイル情報(添付) | |
| タイトル ( eng ) |
In situ Quantification of Ammonium Sulfate in Single Aerosol Droplets by Means of Laser Trapping and Raman Spectroscopy
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| 作成者 |
Yamauchi Kunihiro
Kitamura Noboru
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| 収録物名 |
Analytical Sciences
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| 巻 | 29 |
| 号 | 12 |
| 開始ページ | 1223 |
| 終了ページ | 1226 |
| 抄録 |
Noncontact levitation in air of single micrometer-sized water droplets containing ammonium sulfate was successful by a laser trapping technique. The trapping laser beam was also used simultaneously as an excitation light source for the Raman spectroscopy of trapped droplets. Raman scattering of the symmetric stretching vibration of the SO42− anion and the OH stretching vibrations of H2O were observed at 980 and 3420 cm−1, respectively. The intensity ratio of these two Raman peaks was linearly proportional to the ammonium sulfate concentration in water. Therefore, the in situ quantification of ammonium sulfate in single aerosol droplets was achieved by means of laser trapping and Raman spectroscopy. To the best of our knowledge, this study is the first experimental observation of the independence of ammonium sulfate concentrations of aerosol water droplets to those of the mother solutions under constant relative humidity conditions.
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| 著者キーワード |
Laser trapping
Raman spectroscopy
aerosol
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| 内容記述 |
This research was supported by JST, PRESTO and Grand-in-Aid for Scientific Research (A) (No. 23245015) from the Ministry of Education, Culture, Sports, Science, and Technology (MEXT), Japan.
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| NDC分類 |
化学 [ 430 ]
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| 言語 |
英語
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| 資源タイプ | 学術雑誌論文 |
| 出版者 |
The Japan Society for Analytical Chemistry
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| 発行日 | 2013-12 |
| 権利情報 |
2013 © The Japan Society for Analytical Chemistry
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| 出版タイプ | Version of Record（出版社版。早期公開を含む） |
| アクセス権 | オープンアクセス |
| 収録物識別子 |
[ISSN] 0910-6340
[ISSN] 1348-2246
[NCID] AA10500785
[DOI] 10.2116/analsci.29.1223
[DOI] https://doi.org/10.2116/analsci.29.1223
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