沈阳市大气降水污染与沉降特征的城郊差异

关净文; 侯乐; 苏枞枞; 沈建东; 于兴娜

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中国环境科学 ›› 2024, Vol. 44 ›› Issue (6) : 3052-3059.

大气污染与控制

沈阳市大气降水污染与沉降特征的城郊差异

关净文¹, 侯乐², 苏枞枞², 沈建东³, 于兴娜¹

作者信息 +

Urban and suburban differences in precipitation pollution and deposition characterization in Shenyang

GUAN Jing-wen¹, HOU Le², SU Cong-cong², SHEN Jian-dong³, YU Xing-na¹

Author information +

文章历史 +

摘要

为了解沈阳地区大气降水污染与沉降特征的城郊差异,对2018~2022年沈阳市铁西区站点(城市)和苏家屯站点(郊区)降水样品的电导率、pH值和各种水溶性离子浓度及其沉降量进行了研究.结果表明,观测期间两站点平均pH值分别为7.12(6.09~8.36)和7.11(5.88~8.19),均呈碱性,无酸性降水.城郊站点的降水电导率和总水溶性离子平均浓度差异不大,2018~2022年期间整体呈现下降趋势.沈阳两站点的相对酸度(FA)均值为0.0004,(Ca²⁺+NH₄⁺)/(SO₄^2-+NO₃^-)均值分别达到了1.57和1.61,表明碱性离子的中和能力较强.大气降水中NO₃^-/SO₄^2-的比值介于0.41~0.58,SO₄^2--S湿沉降量分别是NO₃^--N和NH₄⁺-N沉降量的1.14倍~2.20倍,表明沈阳大气降水主要以硫沉降为主.城市站的无机氮沉降量总体上高于郊区站,其中NH₄⁺-N平均沉降量分别是NO₃^--N的1.74和1.78倍,说明沈阳市大气降水中的无机氮以还原态氮占主导,这主要与汽车尾气、城市绿地养护、人体排泄物以及郊区频繁的农业活动相关.

Abstract

In order to understand the differences of precipitation pollution and deposition characteristic in Shenyang, the electrical conductivity, pH value, and concentration and deposition of water-soluble ion in precipitation were studied at Tiexi (urban) and Sujiatun (suburb) stations in Shenyang during 2018~2022. The results showed that the average pH values of two stations were 7.12 (6.09~8.36) and 7.11 (5.88~8.19), respectively, which indicated that precipitation was alkaline. The precipitation conductivity and the average concentration of total water-soluble ions at two sites were similar and showed a downward trend from 2018 to 2022. The mean relative acidity (FA) of the two sites in Shenyang was 0.0004, and the mean values of (Ca²⁺+NH₄⁺)/(SO₄^2-+NO₃^-) were 1.57 and 1.61, respectively, indicating strong neutralization ability of alkaline ions. The ratio of NO₃^-/SO₄^2- in precipitation was between 0.41 and 0.58. The wet deposition of SO₄^2--S was 1.14 and 2.20 times that of NO₃^--N and NH₄⁺-N, respectively, indicating that the precipitation in Shenyang was mainly dominated by sulfur deposition. The inorganic nitrogen deposition of urban station was generally higher than that of suburban station. The average deposition of NH₄⁺-N was 1.74 and 1.78 times that of NO₃^--N, respectively, implying that inorganic nitrogen in precipitation in Shenyang was dominated by reduced nitrogen. This was mainly related to automobile exhaust, urban green land maintenance, human excrement and frequent agricultural activities in the suburbs.

导出引用

关净文, 侯乐, 苏枞枞, 沈建东, 于兴娜. 沈阳市大气降水污染与沉降特征的城郊差异[J]. 中国环境科学. 2024, 44(6): 3052-3059

GUAN Jing-wen, HOU Le, SU Cong-cong, SHEN Jian-dong, YU Xing-na. Urban and suburban differences in precipitation pollution and deposition characterization in Shenyang[J]. China Environmental Science. 2024, 44(6): 3052-3059

中图分类号： X517

参考文献

[1] 杨俊,赵远昭,李静,等.中国大气降水化学组成特征及来源解析研究进展[J].环境生态学, 2022,4(7):93-100. Yang J, Zhao Y Z, Li J, et al. Research progress on chemical composition and source analysis of atmospheric precipitation in China[J]. Environmental Ecology, 2022,4(7):93-100.
[2] 张宝贵,杜建双,李卫敏,等.降水对PM_2.5和PM₁₀的湿清除效果分析[J].河北环境工程学院学报, 2020,30(6):28-33. Zhang B G, Du J S, Li W M, et al. Analysis of moisture removal effect of precipitation on PM_2.5 and PM₁₀[J]. Journal of Hebei University of Environmental Engineering, 2020,30(6):28-33.
[3] 曹杨,刘炜桦,王晨曦,等.成都市降水对大气污染物的清除效果分析[J].环境科学研究, 2020,33(2):305-311. Cao Y, Liu W H, Wang C X, et al. Analysis of removal effect of precipitation on air pollutants in Chengdu[J]. Research of Environmental Sciences, 2020,33(2):305-311.
[4] 王东秀,李娅萍,陈瑜,等.2015~2019年昆明市大气降水变化趋势及离子特征研究[J].环境科学导刊, 2021,40(5):47-51. Wang D X, Li Y P, Chen Y, et al. Change trend and ion characteristics of atmospheric precipitation in Kunming City from 2015 to 2019[J]. Journal of Environmental Science, 2021,40(5):47-51.
[5] 卢俊平,张晓晶,刘廷玺,等.京蒙沙源区水库大气氮沉降变化特征及源解析[J].中国环境科学, 2021,41(3):1034-1044. Lu J P, Zhang X J, Liu T X, et al. Variation characteristics and source analysis of atmospheric nitrogen deposition in reservoirs in the Beijing-Mongolia sand source area[J]. China Environmental Science, 2021,41(3):1034-1044.
[6] Liu X J, Xu W, Du E, et al. Environmental impacts of nitrogen emissions in China and the role of policies in emission reduction[J]. Philosophical Transactions of the Royal Society A, 2020,378(2183).
[7] 韩力慧,王红梅,向欣,等.北京市典型区域降水特性及其对细颗粒物影响[J].中国环境科学, 2019,39(9):3635-3646. Han L H, Wang H M, Xiang X, et al. Precipitation characteristics and its effects on fine particulate matter in Beijing[J]. China Environmental Science, 2019,39(9):3635-3646.
[8] 侯思宇,于兴娜,龚克坚,等.重庆市大气降水污染及其沉降特征[J].中国环境科学, 2019,39(10):4100-4107. Hou S Y, Yu X N, Gong K J, et al. Atmospheric precipitation pollution and its sedimentation characteristics in Chongqing[J]. China Environmental Science, 2019,39(10):4100-4107.
[9] 郭晓方,崔阳,王开扬,等.近3年太原市夏季降水的化学特征研究[J].环境科学, 2015,36(2):388-395. Guo X F, Cui Y, Wang K Y, et al. Study on chemical characteristics of summer precipitation in Taiyuan City in recent 3 years[J]. Environmental Science, 2015,36(2):388-395.
[10] 张林静,张秀英,江洪,等.沈阳市降水化学成分及来源分析[J].环境科学, 2013,34(6):2081-2088. Zhang L J, Zhang X Y, Jiang H, et al. Chemical composition and source analysis of precipitation in Shenyang[J]. Environmental Science, 2013,34(6):2081-2088.
[11] 李苗,饶永才,蒋园园,等.2020年徐州市大气降水化学特征及来源分析[J].环境科技, 2021,34(3):64-68. Li M, Rao Y C, Jiang Y Y, et al. Chemical characteristics and source analysis of atmospheric precipitation in Xuzhou City in 2020[J]. Environmental Science and Technology, 2021,34(3):64-68.
[12] 葛福玲,张红波,吕晓昊.威海市区大气降水化学特征及来源研究[J].环境科学与管理, 2022,47(10):160-165. Ge F L, Zhang H B, Lv X H. Chemical characteristics and sources of atmospheric precipitation in Weihai City[J]. Environmental Science and Management, 2022,47(10):160-165.
[13] 肖致美,李鹏,陈魁,等.天津市大气降水化学组成特征及来源分析[J].环境科学研究, 2015,28(7):1025-1030. Xiao Z M, Li P, Chen K, et al. Chemical composition and source analysis of atmospheric precipitation in Tianjin[J]. Research of Environmental Sciences, 2015,28(7):1025-1030.
[14] Jiang W Q, Shen J L, Li Y, et al. Contrasting change trends in dry and wet nitrogen depositions during 2010 to 2020:Evidence from an agricultural catchment in subtropical Central China[J]. The Science of the total environment, 2023,907:168094-168094.
[15] 张厚勇,孙雷,刘春花,等.庐山酸性降水的化学特征及致酸因子研究[J].环境科学与技术, 2016,39(11):133-137,161. Zhang H Y, Sun L, Liu C H, et al. Study on chemical characteristics and acid-causing factors of acid precipitation in Lushan Mountain[J]. Environmental Science and Technology, 2016,39(11):133-137,161.
[16] 吴起鑫,韩贵琳.三峡水库库首地区大气降水化学特征及来源分析[J].中国环境科学, 2012,32(3):385-390. Wu Q X, Han G L. Chemical characteristics and source analysis of atmospheric precipitation in the Three Gorges Reservoir head area[J]. China Environmental Science, 2012,32(3):385-390.
[17] 郑敬茹,瞿厚淑,付山,等.黄石市大气PM_2.5中水溶性离子浓度[J].环境科学研究, 2019,32(7):1170-1178. Zheng J R, Qu H S, Fu S, et al. Concentrations of water-soluble ions in atmospheric PM_2.5 in Huangshi City[J]. Research of Environmental Sciences, 2019,32(7):1170-1178.
[18] 陈启烜,贺瑶,唐亚妮,等.南京市大气降水化学特征及其来源解析[J].环境科学学报, 2024,44(1):112-123. Chen Q X, He Y, Tang Y N, et al. Chemical characteristics and source analysis of atmospheric precipitation in Nanjing[J]. Journal of Environmental Sciences, 2019,44(1):112-123.
[19] Xu Z F, Wu Y, Liu W J, et al. Chemical composition of rainwater and the acid neutralizing effect at Beijing and Chizhou city, China[J]. Atmospheric Research, 2015,164-165:278-285.
[20] Hong X, Xiao H B, Yin C F, et al. Chemical composition of precipitation and its sources in Hangzhou, China[J]. Environmental monitoring and assessment, 2011,183(1-4):581-592.
[21] 张良玉,魏丽欣,赵春雷,等.2012~2017年京津冀区域酸雨变化特征[J].气象与环境学报, 2019,35(4):47-54. Zhang L Y, Wei L X, Zhao C L, et al. Variation characteristics of acid rain in Beijing-Tianjin-Hebei region from 2012 to 2017[J]. Journal of Meteorology and Environment, 2019,35(4):47-54.
[22] 李明,李宝鑫,罗文昭,等.瓦里关地区大气降水化学特征及离子来源[J].气象科技进展, 2023,13(4):24-28,40. Li M, Li B X, Luo W Z, et al. Chemical characteristics and ion sources of atmospheric precipitation in Wariguan Area[J]. Progress in Meteorological Science and Technology, 2023,13(4):24-28,40.
[23] 周东,黄智浦,李思敏,等.西安市大气降水的主要化学组分及其来源[J].环境科学, 2023,44(6):3142-3151. Zhou D, Huang Z P, Li S M, et al. Main chemical components and sources of atmospheric precipitation in Xi'an[J]. Environmental Science, 2023,44(6):3142-3151.
[24] Meng Y, Zhao Y L, Li R, et al. Characterization of inorganic ions in rainwater in the megacity of Shanghai:Spatiotemporal variations and source apportionment[J]. Atmospheric Research, 2019,222(JUL.):12-24.
[25] 孙启斌,肖红伟,肖化云,等.南昌市大气降水化学特征及来源分析[J].环境科学研究, 2017,30(12):1841-1848. Sun Q B, Xiao H W, Xiao H Y, et al. Chemical characteristics and source analysis of atmospheric precipitation in Nanchang City[J]. Research of Environmental Sciences, 2017,30(12):1841-1848.
[26] 王念飞,张棋,龙小兰,等.泸州市大气降水的化学特征的探讨[J].四川环境, 2020,39(6):42-46. Wang N F, Zhang Q, Long X L, et al. Study on the chemical characteristics of atmospheric precipitation in Luzhou City[J]. Sichuan Environment, 2019,39(6):42-46.
[27] Zhou K Y, Xu W, Zhang L, et al. Estimating nitrogen and sulfur deposition across China during 2005 to 2020 based on multiple statistical models[J]. Atmospheric Chemistry and Physics, 2023,23(15):8531-8551.
[28] 种凯琳,郑继东,陈水龙,等.焦作市春季大气降水化学特征及来源研究[J].河南科学, 2019,37(2):291-297. Zhong K L, Zheng J D, Chen S L, et al. Chemical characteristics and sources of spring precipitation in Jiaozuo City[J]. Henan Science, 2019,37(2):291-297.
[29] Li C L, Kang S C, Zhang Q G, et al. Major ionic composition of precipitation in the Nam Co region, Central Tibetan Plateau[J]. Atmospheric Research, 2007,85(3/4):351-360.
[30] 黎彬,黄俊梅.2006~2020年上海市闵行区大气降水化学特征及来源分析[J].环境监控与预警, 2022,14(6):71-76. Li B, Huang J M. Chemical characteristics and source analysis of atmospheric precipitation in Minhang District, Shanghai, 2006~2020[J]. Environmental Monitoring and Warning, 2022,14(6):71-76.
[31] 古金霞,吴丽萍,霍光耀,等.天津市PM_2.5中水溶性无机离子污染特征及来源分析[J].中国环境监测, 2013,29(3):30-34. Gu J X, Wu L P, Huo G Y, et al. Characteristics and sources of water-soluble inorganic ion pollution in PM_2.5 in Tianjin[J]. China Environmental Monitoring, 2013,29(3):30-34.
[32] 郑珂,赵天良,张磊,等.2001~2017年中国3个典型城市硫酸盐和硝酸盐湿沉降特征[J].生态环境学报, 2019,28(12):2390-2397. Zheng K, Zhao T L, Zhang L, et al. Characteristics of wet deposition of sulfate and nitrate in three typical cities in China from 2001 to 2017[J]. Journal of Ecology and Environment, 2019,28(12):2390-2397.
[33] 王国祯,刘偲嘉,于兴娜.珠海市降水化学与沉降特征[J].环境科学研究, 2021,34(7):1612-1620. Wang G Z, Liu S J, Yu X N. Characteristics of precipitation chemistry and sedimentation in Zhuhai[J]. Research of Environmental Sciences, 2021,34(7):1612-1620.
[34] Huang D Y, Xu Y G, Peng P A, et al. Chemical composition and seasonal variation of acid deposition in Guangzhou, South China:Comparison with precipitation in other major Chinese cities[J]. Environmental Pollution, 2009,157(1):35-41.
[35] 张佳颖,于兴娜,张毓秀,等.南京北郊大气降水中水溶性无机氮和有机氮沉降特征[J].环境科学, 2022,43(7):3416-3422. Zhang J Y, Yu X N, Zhang Y X, et al. Precipitation characteristics of water-soluble inorganic nitrogen and organic nitrogen in atmospheric precipitation in the northern suburbs of Nanjing[J]. Environmental Science, 2022,43(7):3416-3422.
[36] 刘平,刘学军,骆晓声,等.山西北部农村区域大气活性氮沉降特征[J].生态学报, 2016,36(17):5353-5359. Liu P, Liu X J, Luo X S, et al. Atmospheric active nitrogen deposition in rural areas of northern Shanxi Province[J]. Acta Ecologica Sinica, 2016,36(17):5353-5359.
[37] 郭晓明,金超,孟红旗,等.丹江口水库淅川库区大气氮湿沉降特征[J].生态学报, 2021,41(10):3901-3909. Guo X, Jin C, Meng H, et al. Characteristics of atmospheric nitrogen precipitation in Xichuan Reservoir area of Danjiangkou Reservoir[J]. Acta Ecologica Sinica, 2019,41(10):3901-3909.
[38] Pan Y P, Tian S L, Liu D W, et al. Fossil fuel combustion-related emissions dominate atmospheric ammonia sources during severe haze episodes:Evidence from (15) N-stable isotope in size-resolved aerosol ammonium[J]. Environmental Science&Technology, 2016, 50(15):49-56.
[39] Beusen A H W, Bouwman A F, Heuberger P S C, et al. Bottom-up uncertainty estimates of global ammonia emissions from global agricultural production systems[J]. Atmospheric Environment, 2008, 42(24):6067-6077.
[40] Zhu J X, He N P, Wang Q F, et al. The composition, spatial patterns, and influencing factors of atmospheric wet nitrogen deposition in Chinese terrestrial ecosystems[J]. Science of the total Environment, 2015,511(511):777-785.
[41] 赵越,李宗省,李中平,等.长江源区大气氮湿沉降时空变化特征[J].地球科学, 2023,48(3):1179-1194. Zhao Y, Li Z S, Li Z P, et al. Temporal and spatial variation of atmospheric nitrogen precipitation in the source region of the Yangtze River[J]. Earth Science, 2023,48(3):1179-1194.
[42] Yu X N, Shen L, Hou X H, et al. High-resolution anthropogenic ammonia emission inventory for the Yangtze River Delta, China,[J]. Chemosphere, 2020,251:1-40.