Inductively coupled plasma mass spectrometry, also called ICP-MS, is a highly sensitive method that gives quantitative results of elements and different isotopes in samples at milligram to nanogram levels per liter. ICP-MS has many applications, from water purity testing to material science.
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Heavy metals quantification in water sample by ICP-MS
ICP-MS / ICP-OES measurement package for water sample (Al, As, Ba, B, Cd, Ca, Cr, Cu, Sn, Fe, Mg, Hg, Pb, K, Se, Na, Sr, Zn)
ICP-MS measurement (wide) for water sample (Be, Ba, Co, Al, Mg, Cu, Li, Mn, Ag, Sn, Ti, V, Zn, Tl, B, Hg, Mo, Fe, Ca, K, U, P, Cd, Na, Cr, Ni, Pb, Sb, As, Se)
ICP-MS nutrients from food sample (Ca, P, Na, Mg, Zn, Mn, Cu, I, Se, Co)
Purity assay for solvent sample (GC-FID, Karl Fischer and ICP-MS)
Heavy metals quantification of soil, sludge or sediment (As, Cd, Co, Cr, Cu, Hg, Ni Pb, Sb, V and Zn) by ICP-OES
ICP-MS metal screening of solvent samples
Elemental analysis of plastics and polymers by ICP-SFMS
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What is ICP-MS?
ICP-MS is a high throughput analysis method that is capable of detecting most of the elements in the periodic table. Modern ICP-MS instruments offer linear dynamic ranges up to twelve orders of magnitude. This enables simultaneous analysis of major and minor elemental components of the same sample. Besides low-concentration (ppb=parts per billion=µg/l) accuracy, ICP-MS performs reliably in ultra-low concentrations (ppt=parts per trillion=ng/l and even ppq=parts per quadrillion). The method is capable of measuring atomic mass ranging from 7 to 250, which means that it detects elements from Lithium to Uranium. ICP-MS can also distinguish different isotopes of elements present in a sample.
How does ICP-MS work?
ICP-MS uses high-temperature plasma that breaks down the chemical compounds in the samples to their atomic ions. After this, mass spectrometry is used to detect and quantitate the ions. ICP-MS is capable of distinguishing different isotopes of the same element.
Inductively coupled plasma mass spectrometry is most often used to analyze solid or liquid samples, but gaseous samples can also be investigated. Most common ICP-MS instruments rely on liquid injection, meaning that the solid and gaseous samples must be dissolved into liquids before the analysis. With solid samples, this is most often achieved through acid digestion with hot mineral acids. Gases can be trapped in suitable liquids by bubbling. If sufficient results cannot be achieved through pretreating solid or gaseous samples, special instruments can be used to investigate these samples without dissolving pretreatment. For example, LA-ICP-MS (laser ablation inductively coupled plasma mass spectrometry) can be used to study surfaces of solid samples directly.
The difference between ICP-MS and ICP-OES
The principle of ICP-MS is measuring the mass of the atoms through mass spectrometry, as explained above. ICP-OES (Inductively Coupled Plasma Optical Emission Spectroscopy) on the other hand, is based on analyzing the wavelengths of the excited atoms and ions within the elements in the sample.
The difference in use cases is that ICP-OES is a more robust method for analyzing samples that have a higher amount of total dissolved solids and stricter regulations. Examples of this type of sample are groundwater, wastewater, soils and solid waste.
What is ICP-MS analysis used for?
ICP mass spectrometry is most often used in multi-element trace studies. It can, for example, be used to analyze heavy metal contamination of water, consumer goods or pharmaceutical products. Other metal trace studies are also common.
Suitable sample matrices
- Raw materials
- Drinking and process water
- Impurities in drugs and pharmaceuticals
- Environmental measurements
- Mining, rocks and minerals
- Isotope studies
- Organic polymers
- Food and beverages
- Semiconductor materials
Ideal uses of ICP-MS
- ICP-MS is used to detect elements and different isotopes from Lithium to Uranium.
- Optimal for liquid and solid samples in environmental studies.
- The ICP-MS is used in elemental tracing and detection.
Frequently asked questions
ICP-MS has many applications, as it can detect elemental impurities and toxins within a sample. One common use is to test water and soil samples in ecological studies.
ICP-MS analysis is also used in the food industry to find contaminants within products. In the pharmaceutical industry, ICP-MS is used to screen for inorganic impurities in drugs.
ICP-MS can't be used for the detection of hydrogen, helium, carbon and a few other light elements.
ICP-MS is suitable for most sample matrices, including liquids, gasses and solids.
Measurlabs offers a variety of laboratory analyses for product developers and quality managers. We perform some of the analyses in our own lab, but mostly we outsource them to carefully selected partner laboratories. This way we can send each sample to the lab that is best suited for the purpose, and offer high-quality analyses with more than a thousand different methods to our clients.
When you contact us through our contact form or by email, one of our specialists will take ownership of your case and answer your query. You get an offer with all the necessary details about the analysis, and can send your samples to the indicated address. We will then take care of sending your samples to the correct laboratories and write a clear report on the results for you.
Samples are usually delivered to our laboratory via courier. Contact us for further details before sending samples.