Atmospheric Chemistry of Alpha-Oxygenated Carbonyl Compounds, Including Hydroxyacetone

大气中甲醛和氧合羰基化合物（包括羟乙醛、羟丙酮、乙二醛、甲基乙二醛和甲醛）的高灵敏度测量技术将进一步开发和应用于该领域。含氧羰基化合物是生物烃和人为烃在大气中氧化的重要产物。由于它们在对流层下层太阳光谱中的光解活性，这些化合物成为大气自由基的重要前体。测量技术是基于用线圈取样器对感兴趣的化合物进行水擦洗，然后用DNPH和HPLC分析衍生化。检测限约为10-30ppt，时间分辨率短于20分钟。该仪器将于1998年在纽约Pinnacle州立公园的一个多调查员实地活动中部署，在那里将同时测量各种各样的大气痕量物种，作为NARSTO-Northeast计划的一部分。

9707002 Zhou A highly sensitive technique for the atmospheric measurement of formaldehyde and oxygenated carbonyl compounds, including hydroxyacetaldehyde, hydroxyacetone, glyoxal, methylglyoxal, and formaldehyde will be further developed and deployed in the field. Oxygenated carbonyl compounds are important products of the atmospheric oxidation of both biogenic and anthropogenic hydrocarbons. Because of their photolytic activities in the solar spectrum of the lower troposphere, these compounds become important precursors for atmospheric free radicals. The measurement technique is based on aqueous scrubbing of the compounds of interest using a coil sampler followed by derivatization with DNPH and HPLC analysis. The detection limits will be on the order of 10-30ppt with a time resolution shorter than 20 minutes. The instrument will be deployed during a multi-investigator field campaign in 1998 at Pinnacle State Park, NY, where a large variety of atmospheric trace species will be measured simultaneously as part of the NARSTO-Northeast program.