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Simultaneous determination of cadmium, lead and copper in
cereal flakes by voltammetry
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Plant root absorb nutrients and contaminants from soil onto the cells. From
the roots they can be translocated into various other tissues of the plant.
Trace levels of metals such as copper and zinc
are vital to plants but high quantities of heavy metals such as copper and lead
can be physiologically injurious. Highly mobile cadmium can
also easily been taken up by plants through their roots. It can accumulate in
the cereal grains. Cereal grains can absorb lead from the air
at a significant rate. Tin present in the sample does not interfere with the
determination of lead.
An aliquot of the digestion solution is used for the voltammetric determination
with the MVA-2 system on a hanging mercury drop electrode (HMDE).
The heart of this analysis system is a 797 VA Computrace enriched with the unbeatable
Dosino technique for liquid handling. For your convenience, the method and relevant
parameters are already implemented in the software of Metrohm’s 797 VA
Computrace.
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Product information
| MVA-2 system intended for partly automated routine analysis
and consisting of the 797 VA Computrace and two 800 Dosinos. |
MVA-2 |
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| MVA-3 system for fully automated analysis of small series of samples consisting
of the 797 VA Computrace, a 813 Compact Autosampler, two 800 Dosinos, a
731 Relay Box and two 772 Pump Units |
MVA-3 |
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me product information! |
Get more information
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Tips
- Method: The determination
of cadmium, lead and copper can be carried out with
a variety of foodstuffs (i.e. flour, cereal flakes,
starch, pasta, edible oils, sugar, vegetables, wine
and water).
- Automation: Small series
of up to 18 samples are easily processed fully automatic
by the MVA-3 system.
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Validation: For the Validation of Metrohm VA instruments using
Standard Operating Procedures see our Application Bulletin 276
(Info
Center).
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