Preprints
https://doi.org/10.5194/amt-2017-267
https://doi.org/10.5194/amt-2017-267

  30 Aug 2017

30 Aug 2017

Review status: this preprint was under review for the journal AMT. A revision for further review has not been submitted.

Standard source of atmospheric black carbon aerosol generated from ultrasonic spray of BC suspension

Ruchen Zhu1, Huixiang Wang1, Xiaoyan Wang2, and Hao Liu3 Ruchen Zhu et al.
  • 1College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China
  • 2China National Environmental Monitoring Center, Beijing 100012, China
  • 3Yangtze River Water Resources Protection Bureau, Wuhan 430010, China

Abstract. Black carbon (BC) aerosol has strong radiative forcing and plays an important role in global climate change and human health. A generator with low levels of BC-air is developed in this study for researchers to calibrate BC monitors. Ultrasonic nozzle is applied to atomize BC suspension to produce quantificational BC-air samples which can be used directly as a standard source of BC. Membrane test conducted by balance is used to check up its feasibility. Results show that the relationship of weight increment of membrane and target concentration of BC-air have very good linearity. This confirms that the ultrasonic spray system is a good source to generate standard concentration of BC-air. The device has good feasibility in the BC concentrations range of 0–200 μg m−3. Multi Angle Absorption Photometer (MAAP) is used to detect the concentration of BC-air generated by the ultrasonic spray of suspension. Target concentrations generated by the device accord with the measured data of MAAP.

Ruchen Zhu et al.

 
Status: closed (peer review stopped)
Status: closed (peer review stopped)
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Status: closed (peer review stopped)
Status: closed (peer review stopped)
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement

Ruchen Zhu et al.

Ruchen Zhu et al.

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Short summary
In this work, we evaluated a source of black carbon aerosol generated by ultrasonic spray which shows good performance in our experiments. It has good feasibility in the BC concentrations range of 0–200 μg m−3. This generator can be used as a standard source for black carbon monitoring in atmosphere.