VASSANELLI LAB ANALYSES
ICP-OES METALS
ANALYTICAL TECHNIQUE: ICP-OES
UNIT OF MEASUREMENT: ug/l - mg/l
METHOD: POP_160 Rev. 7 2023
MATRICES ( A if accredited) :
Balsamic vinegar
A, Beer
, CM
A, Cooked must
A, Leaves
, Liqueurs and Spirits
, Must
A, Oenological products
, RCM
A, Soil
, Vinegar-based condiments
A, Vinegars and condiments
A
DESCRIPTION:
The determination is made via ICP-OES.
This technique interfaces an inductively coupled plasma source with an optical detector (photomultiplier).
The principle of operation involves a flow of argon transporting the vaporised sample inside an icp torch, where it reaches a temperature of 6000-8000°c, and ionisation and atomisation take place.
In an icp-oes (optical emission spectroscopy) the spectral composition of the light emitted by the source is analysed through a monochromator (diffraction reticle) that breaks the entering light into spectrums That are intercepted by a photomultiplier.
The parameters determined by this analytical technique are the following:
Aluminium (Al)
Magnesium (Mg)
Silver (Ag)
Manganese (Mn)
Arsenic (As)
Lead (Pb)
Barium (Ba)
Potassium (K)
Beryllium (Be)
Copper (Cu)
Boron (B)
Rubidium (Rb)
Cadmium (Cd)
Silicon (Si)
Calcium (Ca)
Sodium (Na)
Cobalt (Co)
Strontium (Sr)
Chromium (Cr)
Thallium (Ti)
Iron (Fe)
Titanium (Ti)
Gallio (Ga)
Vanadium (V)
Germanium (Ge)
Zinc (Zn)
Indium (In)
Sulfur (S)
Lithium (Li)
… and others
You can see the full list of controls
here.
This analytical procedure has multiple advantages:
• lack of matrix effect
• economics of scale, indeed the quantification of micro and macro elements happens simultaneously
• high accuracy and precision
• obtain a "photograph" of the cations present in the analysed product.
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