佛山市冬夏季羰基化合物污染特征

发布时间：2018-03-04 00:25

本文选题：羰基化合物　切入点：冬季　出处：《中国环境科学》2017年03期 　论文类型：期刊论文

【摘要】：2014年冬季和2015年夏季在佛山市采集了36个羰基化合物的样品,检测出了其中14种化合物并进行了定量分析.结果表明,佛山市冬夏季羰基化合物污染严重,采样期间冬季和夏季平均浓度分别为36.15μg/m~3±3.45μg/m~3和33.25μg/m~3±4.25μg/m~3.冬季三种主要污染物为:甲醛(8.54μg/m~3,23.65%)丙酮(8.20μg/m~3,22.69%)乙醛(5.79μg/m~3,16.03%);夏季主要污染物为:甲醛(14.63μg/m~3,44.01%)乙醛(6.22μg/m~3,18.70%)丙酮(5.23μg/m~3,15.73%);冬季羰基化合物日变化不大,上午与晚上浓度相近,下午浓度略高于上午和晚上;夏季羰基化合物日变化较大,上午与晚上浓度相近,下午浓度明显高于上午和晚上;佛山市冬季C1/C2和C2/C3的浓度比分别为1.56和14.35,夏季C1/C2和C2/C3的浓度比分别为2.63和15.56.佛山大气羰基化合物主要来源于人类活动.冬夏季采样期间甲醛、乙醛、丙酮和丙醛之间具有较好的相关性,可以表明这些羰基化合物可能有相似的来源.
[Abstract]:Samples of 36 carbonyl compounds were collected in the winter of 2014 and summer of 2015 in Foshan City. Fourteen of them were detected and quantitatively analyzed. The results showed that the carbonyl compounds in Foshan City were polluted seriously in winter and summer. The average concentrations of acetaldehyde in winter and summer were 36.15 渭 g / mt3 卤3.45 渭 g / mt3 and 33.25 渭 g / mt3 卤4.25 渭 g / m3.The three main pollutants in winter were formaldehyde 8.54 渭 g / mt30.65) acetone 8.20 渭 g / m322.6969) acetaldehyde = 5.79 渭 g / m-1 / r = 16.033.The main pollutants in summer were: formaldehyde = 14.63 渭 g / m-1) acetaldehyde = 6.22 渭 g / m-1) 6.22 渭 g / m-1) acetone 5.23 渭 g / m ~ (315.73mg / g). The concentration of carbonyl compounds in the morning and evening was similar to that in the morning and evening, and the concentration in the afternoon was higher than that in the morning and evening. The concentration ratios of C _ 1 / C _ 2 and C _ 2 / C _ 3 were 1.56 and 14.35 in winter and 2.63 and 15.56 in summer, respectively. There is a good correlation between acetone and propionaldehyde, which indicates that these carbonyl compounds may have similar sources.
【作者单位】：中国科学院大学资源与环境学院;中国科学院生态环境研究中心;清华大学环境学院国家环境保护大气复合污染来源与控制重点实验室;广西大学环境学院;中国环境科学研究院环境基准与风险评估国家重点实验室;广东佛山市环境保护局;
【基金】：国家自然科学基金资助项目(41105111,41475116,41275134,41675127) 国家环境保护大气复合污染来源与控制重点实验室基金项目(SCAPC201401)
【分类号】：X511

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