![[cd2-01.gif]](/Kola/cd2-01.gif)
(Photo: C. Reimann)
Fig. 1: Collecting rain water samples in the field.
Fig. 2: Design of rain water collector.
Rationale
By sampling rain water with a permanently open sampler (Figs.
1-2), one can obtain an estimation of (summer) deposition, both
in terms of dissolved (wet deposition) and particulate (dry deposition)
matter. Long-transported pollutants and locally derived dust alike
are trapped in the rain water collector.
Advantages
Cheap and rapid medium to sample and analyse.
Dissolved and particulate contributions can be separated.
Drawbacks
Wind affects sampler effectiveness during storms.
Open sampler prone to contamination by falling objects (tree needles,
leaves, ...).
Needs frequent sample collection to minimise evaporative loss,
thus only representative of a short time interval.
Not practical for regional investigations.
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RAIN WATER COLLECTOR IN FIELD (Photo: C. Reimann) Fig. 1: Collecting rain water samples in the field.
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DESIGN OF RAIN WATER COLLECTOR Fig. 2: Design of rain water collector.
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