20 
BSH Report No. 56 
MS data on 
biomarkers 
Processing the GC-FID data from each participant as presented in “Method of 
data evaluation” leads to the results In the following “conclusion matrix“ (see 
Tab. 2). 
Consider the discussion points to this section, DP-1 and DP-2 on page 31. 
Set_l 1 on 2 
1 on 3 
2 on 3 
Set_2 4 on 5 
4 on 6 
5 on 6 
Set_3 7 on 8 
7 on 9 
8 on 9 
Dup 1 on 10 
RWS 
BSH 
IAEA 
NFI 
RSD CD 
RSD CD 
RSD CD 
RSD CD 
71% 71% 
57% 71% 
64% 71% 
47% 60% 
60% 80% 
53% 60% 
62% 69% 
69% 69% 
69% 69% 
58% 75% 
83% 83% 
50% 67% 
45% 45% 
20% 15% 
25% 20% 
35% 48% 
43% 52% 
30% 39% 
53% 59% 
24% 47% 
29% 29% 
29% 35% 
24% 29% 
12% 18% 
65% 100% 
53% 65% 
59% 82% 
94% 94% 
67% 89% 
83% 94% 
75% 60% 
58% 87% 
75% 67% 
100% 100% 
64% 71% 
71% 71% 
100% 100% 
100% 100% 
100% 100% 
100% 100% 
Tab. 2: Conclusion matrix of the GC-FID data for ail samples ofall participants. 
All FID data generated by the participants are well in accordance with each 
other. It can be concluded that the samples of the first set are quite similar. 
The non-match resulting from the BSH data (RSD, 1 on 1) Is considered to be 
an outliner In this context. 
The results for the second set point predominantly, apart from some few 
exceptions (BSH and IAEA), to dissimilarities: The average of the matching 
ratio for Set 2 Is only 34%. 
The data for Set 3 consistently point to a match between the samples. 
Set 4, the duplicate analysis (sample 1 on 10) checked out with a 100 % 
matching ratio for every participant. 
As presented under the topic “Limitations of GC-MS analysis for paraffin wax”, 
there are some biomarkers present in paraffin wax. The two most abundant 
ones (with nonetheless still very low Intensities) were the groups of hopanes 
and steranes. Consequently they are looked at in more detail: 
Patterns in the analyses of BSH and RWS do match visually all right; mass chro 
matograms are, at least from this point of view, fairly comparable (see Fig. 11).