Supporting Information
Online characterization of nano-aerosols released by commercial
spray products using SMPS-ICPMS coupling
Losert Sabrina 1,2, Hess Adrian 1, Ilari Gabriele 3, von Goetz Natalie,2*, Hungerbuehler
Konrad 2
Table S1: Average particle number concentrations and particle sizes of the aerosol of all six products
obtained from the two SMPS instruments.
reference SMPS
coupled SMPS
particle number concentration at mean diameter
particle size
particle number
particle size
in dN/dlog dP representa-
[nm]
concentration [#/cm3]
[nm]
tion [#/cm3]
Spray I
no signal
no signal
no signal
no signal
Spray II
5.2*105±1.8*104
95±5
5.8*105±8.2*103
85±3
Spray III
2.1*105±8.2*103
25±0
2.8*105±3.8*103
24±1
Spray IV
5.2*105±5.0*103
85±1
6.4*105±3.5*103
85±0
Spray V
1.5*105±4.6*104
24±1
5.0*105±9.4*103
24±1
Spray VI
4.5*105±1.4*104
22±1
4.8*105±3.0*104
19±1
Figure S1: SEM/EDX images of nanoparticles present in the spray suspensions (a= spray I,
b= spray II, c= spray III, d= Spray IV, e= spray VI).
Figure S2: TEM/EDX images of nanoparticles collected from the aerosol (a= spray I, b=
spray II, c= spray III, d= Spray IV, e= spray V, f= spray VI).
Figure S3: SMPS signals for tested spray products (a= spray I, b= spray II, c= spray III, d=
Spray IV, e= spray V, f= spray VI).
Figure S4: Volume-weighted (left) and number-weighted (right) SMPS-IPCMS signals a=
spray III, b= spray V. SMPS signal does not fit to the corresponding ICPMS signal. For conversion from volume concentration to number concentration the following formula is used:
cN = cV / (Pi/6 * dP^3) with cN: number concentration; cV: volume concentration and dP:
particle diameter.
Table S2: Elements which were analysed with SMPS-ICPMS, but gave no ICPMS signal.
Sample
Elements preselected for ICPMS, which gave no signal
Spray I
107
28
Ag (no gas)
Si
Spray II
27
Al (He)
65
56
Spray III
27
Al (He)
65
28
Spray IV
27
Al(He)
65
59
Ni (He)
52
Spray V
27
Al (He)
52
Cr (He)
56
Fe (He)
59
Spray VI
27
Al (He)
52
Cr (He)
Zn (He)
Zn (He)
Zn (He)
Fe (He)
28
Si (He)
Si (He)
Cr (He)
Ni (He)
107
Ag (no gas)