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ICES Trial
Survey and intercalibration
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Item |
Description |
Cable
strap |
Nylon
binder often used to keep cable together |
Coated
Bottle |
Bottle
with a reference phase coated on the inside of the bottle. Usually the wall
but some times only the bottom. The top is lined with aluminium foil. |
Exposure period |
Number of days a sampler is
exposed to sediment or water. In PSTS that is 6 weeks for water and for sediment
3 weeks (shaking)-5 weeks (rolling). |
ICES parameter code |
Up to 5-letter code for
compounds to be analysed. |
Internal Standard, IS |
Standard added to the sample to correct
for volume variation in the final extract. Is added in the last stage of the
procedure. Also called “Syringe Internal Standard” |
Mussels Local transplanted |
Mussels sampled locally and
transplanted to the sampling station in cages parallel with the passive
samplers |
Mussels Native |
Mussels collected from the
sampling station or nearby that reflect the water quality |
Mussels Transplanted |
Mussels sampled at a reference
location and transplanted to the sampling station in cages |
Oligomers |
Polymeric chains (short or long)
that are not cross-linked in the material and therefore can release with
solvents. They will precipitate in the liner after injection on the GC and
disturb the chromatography and quantification. |
Passive sampler |
Device for passively taking up
(extracting) compounds from a matrix. For water a sampler consists of 6
sheets. In case of sediment it can be a bottle with a coating inside or a
sheet. The sediment is brought in the bottle and shaken. |
PRC
in Sediment PS |
Sediment PS aims fro equilibrium
and an extraction that does not affect the concentration in the sediment.
PRCs can confirm that no depletion took place and can give an indication if
equilibrium was obtained. |
PRC
in water sampling |
Performance
Reference Compounds are used as an indicator for sampling rate. They are
spiked on the sampler and the extend of release is a measure for the sampling
rate. |
Recovery IS |
Internal standard added at the
beginning of the analytical process. The yield represents the recovery. |
Reference passive sampler |
Sampler that is spiked but not
exposed. Stored in freezer and analysed at same time as exposed samplers. |
The eye that can be used to fix
the sampler for exposure. |
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Frame that allows to expose
several samplers or mussel baskets |
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Stainless steel strip with stems
that allows holding 6 sheets of 100cm2 each. All 6 sheets together
form a sampler. May also be called “sheetholder”. |
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Sampling depth |
Distance from water surface to
sampling point |
Sampling Rate |
This is the uptake of a sampler
expressed as volume of water per time units, e.g. litre/day. |
A piece of silicone rubber foil
of 5.5x9.5x0.05 cm with two fixing holes of 5.5 mm ID 35 mm apart |
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Storage
jar |
100
ml glass bottle (heated overnight at 250°C) with aluminum foil lined cap.
Always store in freezer when it contains a sampler. |
Target compounds |
Compounds to analyse in samples |
Frame number |
The frames are numbered. The
number can be found in the upper ring (Kxx) |
Sheet-holder
number |
The sheet holders are numbered on
one end (Hxx). Sheetholder number is especially imported if different time
periods of sampling are overlapping. |
Bottle
number |
All
used bottles are engraved with a number This should be used to identify samples,
as no labels should be attached to allow measuring the bottle weight. |
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