Design and Calibration of a Multi-Channel Aerosol Sampler for Tropopause Region Studies from the CARIBIC Platform

Figures & data

FIG. 1 The aerosol sampler, with the lid in its open position, consisting of 16 channels. Details are showing the nozzles (left) and the position where the samples are placed (right).

FIG. 2 The setup used in determining of the penetration of the cyclone arrangement and the setup used to determine the collection efficiency of the aerosol sampler.

FIG. 3 The penetration of the cyclone as a function of particle size.

FIG. 4 The collection efficiency of the aerosol sampler as a function of particle size.

TABLE 1 Minimum detectable concentration for 1.5 h sampling of a sequential sample

	Concentration ^a		Concentration ^a		Concentration ^a
Element	ng/m^3 STP ^a	Element	ng/m^3 STP ^a	Element	ng/m^3 STP ^a
Aluminum	12	Titanium	0.054	Zinc	0.34
Silicon	40	Vanadium	0.015	Gallium	0.011
Phosphorous	1.3	Chromium	0.034	Germanium	0.022
Sulfur	2.0	Manganese	0.016	Arsenic	0.015
Chlorine	0.83	Iron	0.25	Selenium	0.030
Potassium	0.14	Nickel	0.021	Bromine	0.050
Calcium	0.46	Copper	0.10	Lead	0.030