けい光分析による大気中アクロレインの測定法
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概要
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An air sampling approach was performed to determine acrolein and its related compounds in atmosphere by mean of fluorometric analysis. Sampling apparatus were shown in Fig, 1. The absorber used in this experiments was prepared as follows. m-Aminophenol (30 mg), sodium chloride (100mg) and sulfamic acid (30 mg) were dissolved in 10ml of 1 M hydrochloric acid. At the beginning, 10ml of the absorber was put in each bubbler. Subsequently, 100 μl of acrolein standard solution was injected into T-tube and nitrogen gas was flowed at a rate of 0.6 l/min, until the standard solution disappeared throughout. Each sample was brought up to 10ml with the absorber and 5 ml of this sample solution was taken in a test tube. It was heated in a water bath at 100℃ for 10 min. Then, it was cooled to room temperature in water. The fluorescence intensity was measured with a fluorometer at 350nm and 505 nm of excitation and emission wavelength. Background corrections were made on all measurements. Sulfite ion and nitrite ion up to 300 times as much as acrolein did not interfere in the presence of m-aminophenol and sulfamic acid. Nitrogen dioxide {(0.1〜1.0) ppm}, sulfur dioxide {(0.1〜5.0)ppm}, ozone {(0.08〜0.4) ppm} and nitrogen oxide {(1.0〜4.7)ppm} did not interfere. The collection yield was increased in the coexistence of m-aminophenol and sodium chloride. The collection yield of acrolein was 96% with four bubblers. The detection limit was 0,05 μM and the coefiicient of variation was in the range of 11.6% to 1.2%.
- 社団法人日本分析化学会の論文
- 1979-07-05
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