Analytical and Bioanalytical Chemistry
Electronic Supplementary Material
Morphology, chemical composition and nanostructure of single carbon-rich
particles studied by transmission electron microscopy: source
apportionment in workroom air of aluminium smelters
Stephan Weinbruch, Nathalie Benker, Konrad Kandler, Martin Ebert, Dag G. Ellingsen,
Balázs Berlinger, Yngvar Thomassen
100
80
60
40
20
Diameter [nm]
FA-CH
FA-SC
FA-SP
FB-AA
FB-BC
FB-PP
Fig. S1 Boxplot of the diameter of primary particles of chain-like agglomerates as function of
sampling location (FA-CH = factory A casting house, FA-SC = factory A stud cleaning, FASP = factory A Søderberg potroom, FB-AA = factory B anode assembling, FB-BC = factory
B butt cleaning, FB-PP = factory B Prebake potroom)
40
35
30
25
20
10
15
C/O ratio
FA-CH
FA-SC
FA-SP
FB-AA
FB-BC
FB-PP
Fig. S2 Boxplot of the C/O ratio (ratio of net intensities) of pure chain-like agglomerates as
function of sampling location (FA-CH = factory A casting house, FA-SC = factory A stud
cleaning, FA-SP = factory A Søderberg potroom, FB-AA = factory B anode assembling, FBBC = factory B butt cleaning, FB-PP = factory B Prebake potroom)
0.45
0.40
0.35
Separation distance [nm]
FA-CH
FA-SC
FA-SP
FB-AA
FB-BC
FB-PP
Fig. S3 Boxplot of the graphene sheet separation distance of primary particles of chain-like
agglomerates as function of sampling location (FA-CH = factory A casting house, FA-SC =
factory A stud cleaning, FA-SP = factory A Søderberg potroom, FB-AA = factory B anode
assembling, FB-BC = factory B butt cleaning, FB-PP = factory B Prebake potroom)
Fig. S4 High-resolution TEM image of a primary particle of a chain-like agglomerate
showing several nucleation centres (black dots)