Environmental Monitoring and Assessment

, Volume 186, Issue 10, pp 6061–6081 | Cite as

Odour emission characteristics of 22 recreational rivers in Nanjing

  • Yu Wan
  • Xiaohong Ruan
  • Xinguang Wang
  • Qian Ma
  • Xiaoming Lu


The odour emission characteristics of 22 recreational rivers in Nanjing were investigated and analysed. Eight odorous compounds (ammonia (NH3), hydrogen sulphide (H2S), sulphur dioxide (SO2), carbon disulphide (CS2), nitrobenzene (C6H5NO2), aniline (C6H5NH2), dimethylamine (C2H7N), and formaldehyde (HCHO)) were measured in odour emission samples collected using a custom-made emission flux hood chamber. The results showed that all odorants were detected in all monitoring rivers. NH3 was the main odorant, with emission rates ranging from 4.86 to 15.13 μg/min m2. The total odour emission rate of the Nan River, at 1 427.07 OU/s, was the highest of the all investigated rivers. H2S, NH3 and nitrobenzene were three key odour emission contributors according to their contributions to the total odour emission. A correlation analysis of the pollutants showed there was a significant positive correlation between the emission rate of NH3 and the concentration of ammonia nitrogen (NH4 +-N) and total nitrogen (TN). The H2S and SO2 emission rates had a significant positive correlation with sulphides (S2−) and available sulphur (AS) in the water and sediment. The content of TN, NH4 +-N, S2− and AS in the water and sediment affected the concentration of H2S, SO2 and NH3 in the emission gases. NH4 +-N, S2− and AS are suggested as the key odour control indexes for reducing odours emitted from these recreational rivers. The study provides useful information for effective pollution control, especially for odour emission control for the recreational rivers of the city. It also provides a demonstrate example to show how to monitor and assess a contaminated river when odour emission and its control need to be focused on.


Odour Odorant Emission rate Control indexes Recreational river 



This study was supported by the State Key Program of National Natural Science of China (No. 41230640) and the crucial project of the National Water Pollution Control and Management Science (No. 2008ZX07317-007-02).


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Copyright information

© Springer International Publishing Switzerland 2014

Authors and Affiliations

  • Yu Wan
    • 1
    • 2
  • Xiaohong Ruan
    • 1
    • 2
    • 5
  • Xinguang Wang
    • 3
  • Qian Ma
    • 4
  • Xiaoming Lu
    • 4
  1. 1.Institute of Surficial Geochemistry, State Key Laboratory of Mineral Deposit Research, Department of Earth SciencesNanjing UniversityNanjingChina
  2. 2.School of Earth Science and EngineeringNanjing UniversityNanjingChina
  3. 3.UNSW Water Research Centre, School of Civil and Environmental EngineeringThe University of New South WalesSydneyAustralia
  4. 4.Hydrology and Water Resources Investigation Bureau of Jiangsu ProvinceNanjingChina
  5. 5.Nanjing UniversityNanjing CityPeople’s Republic of China

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