Received: 27 Jul 2017 – Discussion started: 30 Aug 2017
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.
This preprint has been withdrawn.
How to cite. Zhu, R., Wang, H., Wang, X., and Liu, H.: Standard source of atmospheric black carbon aerosol generated from ultrasonic spray of BC suspension, Atmos. Meas. Tech. Discuss. [preprint], https://doi.org/10.5194/amt-2017-267, 2017.
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.
In this work, we evaluated a source of black carbon aerosol generated by ultrasonic spray which...