Environmental Engineering Reference
In-Depth Information
Table 6.1
Advantages and limitations of selected sediment fractionation procedures.
Loss of
contaminants
Potential
artifact
Environment
Sediment texture
Sample
volume
Ecological
realism
Phase
Method
In situ
Ex situ
Speed Operation
Fine Medium Coarse Sandy Adsorp. Vol. Ox. Temp.
Cost
Procedure
Pore
water
Centrifugation
+
Rapid Easy
Large
+
+
+
+
+
high low
stand.
Squeezing
+
Rapid Easy
Large
+
+
+
+
+
+
+
low
low
stand.
Peeper
+
t.c.
Diffi cult
Small
+
+
high high
n.stand.
Suction
+
Rapid Easy
Small
+
+
+
+
low
low
n.stand.
Elutriates
+
t.c.
Diffi cult
+
+
+
+
low
stand.
Solvent
extracts
+
t.c.
Diffi cult
+
+
+
+
low
stand.
t.c., time consuming; Adsorp., adsorption; Vol., volume; Ox., oxidation; Temp., temperature; stand., standardized; n. stand., non-standardized.
Summarized from: Ni Shuilleabhain
et al.
(2003)
