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Inductively Coupled
Plasma (ICP-AES, ICP-MS)
With key
metal concentrations below 1 ppb, ROMIL-SpA™ are an economical
solution to sample preparation in high throughput qc
analysis. For the most demanding applications we
recommend the use of ROMIL-UpA™ products where
metal concentrations are controlled to ppt levels - like
a leaf in a forest.
Atomic
Absorption (AAS, GFAAS)
Whilst being rapidly replaced by faster and more
sensitive ICP techniques, atomic absorption spectroscopy
is still the main tool for trace metal determinations in
many smaller analytical laboraories. Use of ROMIL-SpA™ acids in sample
preparation contributes to trouble-free analysis thus
ensuring the continued popularity of this relatively
simple technique for many years to come.
Ion Chromatography (IC)
Although now a well established technique, ion
chromatography never really caught on in the analysis of
metals due to the popularity of the spectroscopic
techniques. In analysis of anions, however, ion-chromatography
reigns supreme. The same purification techniques that
control metal ions in ROMIL-SpA™ acids also have
the same effect on anionic species which means that
sample preparation can be undertaken free from otherwise
interfering background impurities.
Voltammetry
Also known in the past as polarography, this technique is
making a comeback as a low capital cost entry into trace
analysis. Sensitivity is similar to that for ICP with the
further advantage that different oxidation states of
elements can be identified. Not only can metal ions be
determined but also some anions and organic compounds.
Samples with high ionic concentration are also not a
problem for voltammetry. With the availablity of ROMIL-SpA™ products for
sample preparation, this technique is expected to see a
rapid increase in popularity.
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