| 基于走航监测的长三角工业园区周边大气挥发性有机物污染特征 |
| 摘要点击 3459 全文点击 837 投稿时间：2020-07-28 修订日期：2020-08-18 |
| 查看HTML全文
查看全文 查看/发表评论 下载PDF阅读器 |
| 中文关键词 挥发性有机物(VOCs) 走航监测 工业园区 污染特征 长三角(YRD) |
| 英文关键词 volatile organic compounds(VOCs) mobile monitoring industrial parks characteristics Yangzte River Delta region (YRD) |
| 作者 | 单位 | E-mail | | 王红丽 | 上海市环境科学研究院, 国家环境保护城市大气复合污染成因与防治重点实验室, 上海 200233 | wanghl@saes.sh.cn | | 高雅琴 | 上海市环境科学研究院, 国家环境保护城市大气复合污染成因与防治重点实验室, 上海 200233 | | | 景盛翱 | 上海市环境科学研究院, 国家环境保护城市大气复合污染成因与防治重点实验室, 上海 200233 | | | 楼晟荣 | 上海市环境科学研究院, 国家环境保护城市大气复合污染成因与防治重点实验室, 上海 200233 | | | 胡磬遥 | 上海市环境科学研究院, 国家环境保护城市大气复合污染成因与防治重点实验室, 上海 200233 | | | 安静宇 | 上海市环境科学研究院, 国家环境保护城市大气复合污染成因与防治重点实验室, 上海 200233 | | | 吴宇航 | 上海市环境科学研究院, 国家环境保护城市大气复合污染成因与防治重点实验室, 上海 200233 | | | 高伟 | 暨南大学质谱仪器与大气环境研究所, 广州 510632 | | | 朱亮 | 南京拓服工坊科技有限公司, 南京 211800 | | | 黄成 | 上海市环境科学研究院, 国家环境保护城市大气复合污染成因与防治重点实验室, 上海 200233 | |
|
| 中文摘要 |
| 挥发性有机物（VOCs）是大气臭氧及细颗粒物污染的重要前体物.工业园区是我国VOCs排放的重要来源，但是其污染水平及特征尚不清晰.本研究采用两类VOCs走航监测技术，在长三角主要工业园区开展了108园区次的走航监测，系统分析了长三角不同工业园区VOCs的污染水平及示踪组分特征.结果表明，园区周边VOCs平均浓度变化范围为39~533 μg·m-3（5%~95%分位值浓度），平均值为183 μg·m-3，是城市环境大气浓度的3倍左右；最大峰值浓度的变化范围为307~12006 μg·m-3（5%~95%分位值浓度），平均值为2812 μg·m-3.所有园区周边监测到异常高浓度的频率为64%，其中异常排放频率出现较高的组分主要包括甲苯（32%）、二甲苯（18%）、苯（9%）以及含9个及以上碳数的芳香烃（19%）.不同工业类型的园区周边VOCs浓度水平及主要特征组分存在一定差异；纺织行业园区周边浓度最高，其次是化工、涂装和石化，电子工业园区周边浓度相对最低.鉴于现有走航技术对环境大气常见VOCs组分的覆盖率不足50%，因此上述走航结果相对于实际浓度应该有一定的低估.本研究有助于系统认识我国工业园区VOCs污染水平及特征，为园区VOCs监管及减排提供重要支撑. |
| 英文摘要 |
| Volatile organic compounds (VOCs) play important roles in the formation of ozone and fine particles in the troposphere. Industrial parks emit significant amounts of VOCs in China, while few studies have characterized them. In the present study, a mobile platform was employed to measure the levels and composition VOCs around industrial parks in the Yangzte River Delta region. The average concentration of VOCs ranged from 39 μg·m-3 (5% percentile) to 533 μg·m-3 (95% percentile) with an average of 183 μg·m-3, which was three times that of ambient concentrations. Maximum VOC concentrations ranged from 307 μg·m-3 (5% percentile) to 12006 μg·m-3 (95% percentile) with an average of 2812 μg·m-3. The frequency of abnormal peak values was as high as 64% across all the industrial parks, of which toluene (32%), xylene (18%), benzene (9%), and>C9 aromatics (19%) were the most common species. Differences in VOC characteristics were observed among the different types of industrial parks. Specifically, highest concentrations of VOCs were observed in textile industrial parks followed by chemical, painting, and petrochemical industrial parks, and VOC concentrations in electronics industrial parks were the lowest. Importantly, species measured using the mobile platform only contributed~50% of VOCs present in ambient samples, indicating that the concentrations of VOCs in the industrial parks were underestimated overall. These results can inform measures to control VOC pollution in industrial parks in China. |
|
|
|
