用平行板湿式剥蚀耦合离子色谱仪观测对流层游离酸性气体的实用性

IF 3.8 Q2 ENVIRONMENTAL SCIENCES
Masaki Takeuchi , Shinya Nakagawa , Hiroki Watanabe , Hideji Tanaka , Takaharu Isobe , Hiroko Ogata , Hiroshi Okochi
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引用次数: 0

摘要

远离当地人为排放源的高海拔山区天文台被认为是监测对流层空气污染物时间变化的理想场所。2013年8月17日至21日,我们测量了日本富士山顶部(海拔3776米)自由对流层中的二氧化硫和硝酸浓度。使用平行板湿式剥蚀离子色谱系统进行在线测量,时间分辨率为15分钟。连续观测成功实现,没有任何问题。在收集的样品中,97.8%的二氧化硫和75.7%的硝酸高于定量限。二氧化硫和硝酸的平均气体浓度±标准偏差(n=408)分别为0.106±0.377 ppbv和0.015±0.014 ppbv。8月20日至21日期间,二氧化硫浓度出现间歇性上升。后向轨迹分析表明,高时间分辨率监测器从距离采样点857公里的樱岛山探测到火山二氧化硫。在自由对流层中的高时间分辨观测被证明有助于识别空气污染物的来源。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Practical usefulness of observing the free tropospheric acidic gases with a parallel plate wet denuder coupled ion chromatograph

Practical usefulness of observing the free tropospheric acidic gases with a parallel plate wet denuder coupled ion chromatograph

Mountain observatories at high altitudes, far from local anthropogenic emission sources, are considered ideal for monitoring temporal variations of tropospheric air pollutants. During August 17–21 in 2013, we measured sulfur dioxide and nitric acid concentrations in the free troposphere at the top (3776 m a.s.l.) of Mt. Fuji, Japan. A parallel plate wet denuder-ion chromatographic system was used for the online measurement with 15 min temporal resolution. The continuous observations were successfully achieved without any problems. Of the samples collected, 97.8% of sulfur dioxide and 75.7% of nitric acid were above the limits of quantification. The average gas concentrations ± standard deviation (n = 408) were 0.106 ± 0.377 ppbv for sulfur dioxide and 0.015 ± 0.014 ppbv for nitric acid, respectively. Episodic elevations of sulfur dioxide concentration were recorded from August 20 to 21. Backward trajectory analyses indicated that the high-temporal resolution monitor detected the volcanic sulfur dioxide from Mt. Sakurajima, located 857 km from the sampling point. High-time-resolved observations in the free troposphere proved useful for source identification of air pollutants.

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来源期刊
Atmospheric Environment: X
Atmospheric Environment: X Environmental Science-Environmental Science (all)
CiteScore
8.00
自引率
0.00%
发文量
47
审稿时长
12 weeks
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