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Certified reference materials for leaching procedures


In case that it is not possible to determine the concentration of the different individual chemical species that sum up the total concentration of an element in a given matrix, that means it is impossible to determine the speciation, it is a useful practice to do fractionation instead. Unfortunately, fractionation schemes lack in selectivity and results produced by different procedures cannot easily be compared.


It is therefore of primary interest to have samples specified for a well described procedure  in order to compare different methodologies.


CRMs play a major role in the development and validation of methods and for quality control. The following certified reference materials (CRMs) are available for the fractionation of different elements from solid materials:
 
Supplier
 Name
 Material
 Certificate
IRMM
 BCR 141 R
 Calcarous loam soil
 Cd, Co, Cr, Cu, Hg, Mn, Ni, Pb, Zn: Total concentrations, aqua regia soluble content
IRMM BCR 142 R
 		Light sandy soil
 		Total content (Cd, Co, Cu, Pb, Mn, Hg, Ni),  Aqua regia soluble content (Cd, Pb, Ni, Zn)
IRMM BCR 143 R
 		Sewage sludge amended soil
 		Total content (Cd,Co, Cu, Pb, Mn, Hg, Ni, Zn), Aqua regia soluble content (Cd, Cr, Pb, Mn, Ni, Zn)
IRMM BCR 144 R
 		Sewage sludhe from domestic origin
 		Total content (Cd, Co, Cr, Cu, Hg, Mn, Ni, Pb, Zn), Aqua regia soluble content (Cd, Co, Cr, Cu, Hg, Mn, Ni, Pb, Zn)
IRMM BCR 145 R
 		Sewage sludge
 		Total content (Cd, Co, Cu, Hg, Mn, Ni, Pb,Zn), Aqua regia soluble content (Cr, Cu, Pb, Ni, Zn)
IRMM BCR 146 R
 		Sewage sludge from industrial origin
 		Total content (Cd, Co, Cr, Cu, Mn, Hg, Ni, Pb, Zn), Aqua regia soluble content (Cd, Co, Cr, Cu, Mn, Hg, Ni, Pb, Zn)
IRMM
 BCR 483
Sewage sludge amended soil
 		EDTA extractable fraction(Cd, Cr, Cu, Ni, Pb, Zn), Acetic acid extractable fraction (Cd, Cr, Cu, Ni, Pb, Zn)
IRMM BCR 484
 		Sewage sludge amended terra rossa soil
 		EDTA extractable fraction (Cd, Cu, Ni, Pb, Zn); Acetic acid extraclable fraction (Cd, Cu, Ni, Pb, Zn)
IRMM BCR 684
 Sediment
 Extractable phosphorus in a sequential five-step extraction procedure
IRMM BCR 700
 		Organic rich soil
 		Extractable trace elements following harmonised EDTA and acetic acid extraction procedures (Cd, Cr, Cu, Ni, Pb, Zn)
IRMM BCR 701
 		Sediment
 		Extractable trace elements in sediment following a sequential extraction procedure (Cd, Cr, Cu, Ni, Pb, Zn)
ERML
 		CC135a Brick works soil
 		Total and aqua regia extractable elements
ERML
 CC136a
 Sewage sludge
 Aqua regia extractable elements
LGC
 		6137
 		Estuarine sediment
 		Aqua regia extractable elements
LGC
 6141
 Soil contaminated with clinker/ash Aqua regia extractable elements
LGC
 6156
 Harbour sediment
 Aqua regia extractable elements
LGC
 6180
 Pulverized fuel ash
 Aqua regia extractable elements
LGC
 6189            
River sediment
 Aqua regia extractable elements

* () =information value only, []= original certification no longer valid
NB:! click on the suppliers name to reach the record within EVISA's company database, click on the material name for a link to the record within EVISA's material Database.


EVISA Material Database: Materials related to fractionation analysis

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