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METHOD OPTIMISATION
3.3.5 Extraction experiments
Extraction of PBDEs and musk fragrances from PUF/XAD-2/PUF cartridges
Average recovery rates, absolute and relative standard deviations, medians as well as
minimum and maximum recovery rates of PBDEs and musk fragrances obtained from
PUF/XAD-2/PUF extraction tests are listed in table 13.
Table 13: Recovery rates (R, %) of PBDEs and musk fragrances obtained from extraction of
PUF/XAD-2/PUF cartridges (n=3); SD abs.: absolute standard deviation, RSD: relative standard
deviation, Min: minimum, Max: maximum.
AHTN D13 MX D15 MBDE28 MBDE47 MBDE99 MBDE153 MBDE183
R (Average) 69 87 88 84 82 94 92
SD abs. 7 3 4 1 2 3 2
RSD 10 4 5 2 2 4 2
R (Median) 67 85 89 84 82 95 92
R (Min) 63 85 84 82 81 90 90
R (Max) 77 90 92 85 84 96 94
Extraction of PBDEs and musk fragrances from GFF
Average recovery rates of musk fragrances and PBDEs determined by the two different
extraction methods (FBE, ASE) are presented in figure 3.
Figure 3: Average recovery rates (n=3) of mass-labelled musk fragrances and PBDEs using FBE
and ASE. Error bars display absolute standard deviations.
Recovery rates for PBDEs were between 85 % and 107 % (ASE) and 65 % to 106 % (FBE).
Recovery rates of low and middle molecular weight PBDEs of FBE extracts were constantly
observed above 100 %. In contrast, recovery rates of MBDE183 were low (65 %). Compared
to ASE, average recovery rate of nitro musk MX D15 in FBE extracts was lower by a factor
of 2. A detailed chart of individual recovery rates, their minimum and maximum recovery
rates and standard deviations are presented in table 14.
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