Biology Reference
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collected at high filtration rates (4Lmin −1 ), and its low cost makes it
advantageous for studies requiring large numbers of samples. 3,40 Other
advantages were shown in studies where passing water samples through
glass wool appeared to diminish PCR inhibition. 3,32 Glass wool was found
to have sufficient adsorptive capacity and strength to be used in long-term
continuous sampling. 3 Finally, glass wool appears to be more effective in
retaining infectious intact virus particles than naked viral RNA or par-
tially degraded virions that have lost their infectivity. This is thought pos-
sible if the factors affecting adsorptive strength, such as charge, isoelectric
point, size, and hydrophobicity, are more favorable for infectious intact
virus particles. 3
However, packaging of the glass wool into columns requires experi-
ence, and variability in recovery has been reported using glass wool. 3
When comparisons of virus types were performed within categories
of water matrix and vice versa, NoV GII and poliovirus had statisti-
cally significant different recovery rates only for tap water. Adenovirus
and NoV GI had such differences only for one of two types of ground-
water, while the difference in recovery between adenovirus and polio-
virus was significant for both tap water and two types of groundwater 3
( Table 4.1 ).
Figure 4.3 Nanoalumina fibers. Source: From Figure 1 from Ref. 95 .
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