CAJ | 학술논문

选择郑州市6个特征区域进行布点，在冬季和夏季，每季连续3 d采集样品，并采用2，4-二硝基苯肼吸附管吸附大气样品-高效液相色谱法测定大气中醛酮类化合物浓度水平。结果表明，郑州市大气中主要的醛酮类化合物是甲醛、乙醛、丙酮和2-丁酮，它们的小时平均质量浓度冬季分别为8?23、7?67、13?9、1?56μg/m3，夏季分别为15?4、10?3、17?1、3?30μg/m3，夏季浓度明显高于冬季；无论冬季或夏季昼间浓度均普遍高于夜间，甲醛、乙醛和丙酮的日变化最高质量浓度多出现在08：00～09：00或12：00～13：00或18：00～20：00等时段；甲醛、乙醛和丙酮在冬季相关性较好，具有相同的源和汇，甲醛和乙醛在夏季相关性较好，而甲醛、乙醛和丙酮在夏季的相关性较差。大气醛酮类化合物变化趋势表明，机动车尾气排放和光化学反应是郑州大气醛酮类化合物的重要来源。
선택정주시6개특정구역진행포점，재동계화하계，매계련속3 d채집양품，병채용2，4-이초기분정흡부관흡부대기양품-고효액상색보법측정대기중철동류화합물농도수평。결과표명，정주시대기중주요적철동류화합물시갑철、을철、병동화2-정동，타문적소시평균질량농도동계분별위8?23、7?67、13?9、1?56μg/m3，하계분별위15?4、10?3、17?1、3?30μg/m3，하계농도명현고우동계；무론동계혹하계주간농도균보편고우야간，갑철、을철화병동적일변화최고질량농도다출현재08：00～09：00혹12：00～13：00혹18：00～20：00등시단；갑철、을철화병동재동계상관성교호，구유상동적원화회，갑철화을철재하계상관성교호，이갑철、을철화병동재하계적상관성교차。대기철동류화합물변화추세표명，궤동차미기배방화광화학반응시정주대기철동류화합물적중요래원。
To study the pollution characteristics of Carbonyl compounds in atmospheric environment of Zhengzhou city in 2012, air samples were collected three days in a row in both winter and summer at six feature sites. The levels of carbonyl compounds in the ambient air of Zhengzhou were measured by 2,4-dinitrophenylhydrazine-high performance liquid chromatography methods. The characterizations and their primary sources were also studied. The results were shown as follows, formaldehyde, acetaldehyde, acetone and 2-butyraldehyde were found to be the most predominant carbonyls in the ambient air of Zhengzhou city, with the average concentrations of 8?23, 7?67, 13?9, 1?56 μg/m3 in winter and 15?4, 10?3, 17?1, 3?30 μg/m3 in summer respectively, which shows the concentrations were obvious higher in summer than that in winter. The results also showed that the concentrations in daytime were higher than that at night, the highest concentrations of formaldehyde, acetaldehyde and acetone appeared on 08:00 to 09:00 or 12:00 to 13:00 or 18:00 to 20:00. The good correlations of formaldehyde, acetaldehyde and acetone in winter indicated that they were possible to derived from the same source. The correlation between formaldehyde and acetaldehyde was better in summer, while that between formaldehyde, acetaldehyde and acetone was worse in summer. The variation of carbonyls concentrations implies that vehicle exhaust and the photo-oxidation of hydrocarbons might be the important sources of carbonyls.