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Landfills and waste water treatment plants as sources of ... - GKSS

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STUDY 2: WASTE WATER TREATMENT PLANTS AS SOURCES<br />

74<br />

c<br />

a<br />

d<br />

b<br />

Figure 20: Proportions (%) <strong>of</strong> semi-volatile <strong>and</strong> volatile PFCs in g<strong>as</strong>-ph<strong>as</strong>e samples taken at two WWTPs WA<br />

(a) <strong>and</strong> WB (b) <strong>and</strong> at the corresponding reference sites (b, d). Sampling periods: 04.08- 11.08.2009 (WA) <strong>and</strong><br />

20.08.- 27.08.2009 (WB). RF11 w<strong>as</strong> not analysed due to high <strong>water</strong> content. RF15 may not be representative due<br />

to technical problems with the high-volume sampler.

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