| 广州市灰霾期大气PM_(10)中水溶性离子特征 |
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| 引用本文： | 郭送军,谭吉华,段菁春,马永亮,贺克斌,盛国英,傅家谟.广州市灰霾期大气PM_(10)中水溶性离子特征[J].环境科学与技术,2012(11):83-86. |
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| 作者姓名： | 郭送军 谭吉华 段菁春 马永亮 贺克斌 盛国英 傅家谟 |
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| 作者单位： | 广西大学环境学院;中国科学院计算地球动力学重点实验室中国科学院研究生院地球学院;清华大学环境学院;中国科学院广州地球化学研究所有机地球化学国家重点实验室 |
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| 基金项目： | 国家自然科学基金(41105111;41163008);国家重点实验室专项基金课题(10K13ESPCT);广西大学科学研究项目(XBZ111202) |
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| 摘 要： | 采集广州市大气PM10样品并分别对冬夏两季灰霾和非灰霾期PM10中水溶性离子进行分析。实验表明,广州市灰霾期PM10中水溶性离子的质量浓度要高出非灰霾期4～15倍,其中NO3-浓度升幅最大。非灰霾期主要水溶性无机离子的浓度顺序为SO42->NH4+>NO3-,灰霾期为SO42->NO3->NH4+,严重灰霾期则为NO3->SO42->NH4+。非灰霾期SO42-/NO3-质量浓度比为1.78～3.57,灰霾期为1.04～1.20,而在严重灰霾期则<1,说明灰霾利于NO3-的二次转化生成。实验还表明,灰霾期PM10较非灰霾天气偏酸性,灰霾期SO2和NOx的高转化率导致SO42-和NO3-的大幅增加是加重灰霾期PM10污染的主要原因。
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| 关 键 词： | 灰霾 PM10 水溶性离子 广州市 |
Characteristics of Water Soluble Ions in Atmospheric PM10 during Haze Periods in Guangzhou |
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| GUO Song-jun,TAN Ji-hua,DUAN Jing-chun,MA Yong-liang,HE Ke-bin,SHENG Guo-ying,FU Jia-mo.Characteristics of Water Soluble Ions in Atmospheric PM10 during Haze Periods in Guangzhou[J].Environmental Science and Technology,2012(11):83-86. |
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| Authors: | GUO Song-jun TAN Ji-hua DUAN Jing-chun MA Yong-liang HE Ke-bin SHENG Guo-ying FU Jia-mo |
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| Institution: | 1.School of Environment Studies,Guangxi University,Nanning 530004,China; 2.Key Laboratory of Computational Geodynamics,College of Earth Science,Graduate School,Chinese Academy of Sciences,Beijing 100049,China;3.School of Environment,Tsinghua University,Beijing 100084,China; 4.State Key Laboratory of Organic Geochemistry,Guangzhou Institute of Geochemistry,Chinese Academy of Sciences,Guangzhou 510640,China) |
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| Abstract: | Atmospheric PM10 samples were collected in Guangzhou from March 2002 to June 2003.Characteristics of water soluble ions were analyzed in haze and normal days during summer and winter.Results showed that mass concentrations of water soluble ions in PM10 in haze days were 4～15 times of that in normal days,especially for NO3-.Major species descended in the order of SO42-,NH4+,NO3-in normal days,SO42-,NO3-,NH4+ in haze days and NO3-,SO42-,NH4+ in heavy haze days.Ratios of SO42-/NO3-were 1.78～3.57,1.04～1.20 and<1 in normal days,haze days and heavy haze days respectively.Haze days represented more acidic than normal days,and higher contribution of SO2 and NOx transformations to increasing of NO3-and SO42-mainly resulted in heavy PM10 pollution of haze days. |
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| Keywords: | haze PM10 water soluble ions Guangzhou |
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