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  • CN 62-1070/P
  • ISSN 1000-694X
  • Bimonthly 1981
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The Concentrations and Sources of Nitrate in Aerosol over Golmud, Qinghai, China

  • Sheng Yang ,
  • Yang Shengli ,
  • Han Yongxiang ,
  • Zheng Qiufeng ,
  • Fang Xiaomin
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  • 1. School of Geographical Science/Key Laboratory of Environmental Evolution and Ecological Construct of Jiangsu Province, Nanjing Normal University, Nanjing 210023, China;
    2. MOE Key Laboratory of Western China's Environmental Systems/College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, China;
    3. School of Atmospheric Physics, Nanjing University of Information Science& Technology, Nanjing 210044, China;
    4. Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China

Received date: 2015-01-09

  Revised date: 2015-02-11

  Online published: 2016-05-20

Abstract

The study of particulate nitrate in the ambient air in continental area is of great importance to estimate the global nitrogen emission. To investigate the concentrations and sources of particulate nitrate in aerosol in the northern Tibetan Plateau, the water soluble(WS)nitrates were analyzed by ion chromatography for total suspended particulate(TSP)collected in Golmud from January to June, 2008. The average concentrations of TSP and the WS NO3- are 2 015.94 μg·m-3 and 1.8 μg·m-3 under dust condition, with 274.68 μg·m-3 and 0.74 μg·m-3 under non-dust condition, respectively. The concentrations of TSP and the WS NO3- show distinctive seasonal variations with a trend of spring>summer>winter. The correlation of the WS NO3- and TSP are quite obvious with a coefficient of r=0.67 for all samples and r=0.71 for the samples of spring in 2008. And the concentrations of NO3- have significant correlation with Ca2+. Thus we infer that the dust processes have mainly effects on the concentrations of the WS NO3-, and the surface soil should be the main sources for particulate nitrate. The ratios of NO3-/TSP are higher in dust samples than that of in non-dust samples, and the ratioes are scattered in non-dust samples. It indicates that the WS NO3- may mainly be affected by anthropogenic sources and local weather in non-dust conditions in Goumud.

Cite this article

Sheng Yang , Yang Shengli , Han Yongxiang , Zheng Qiufeng , Fang Xiaomin . The Concentrations and Sources of Nitrate in Aerosol over Golmud, Qinghai, China[J]. Journal of Desert Research, 2016 , 36(3) : 792 -797 . DOI: 10.7522/j.issn.1000-694X.2015.00054

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