What are the main interferences found in ICP-MS?
There are two main types of interferences: isobaric and polyatomic. Isobaric interferences refer to different elements whose isotopes share a common mass. For example, both Fe and Ni have isotopes at mass 58. Therefore, any signal measured at m/z 58 will have contributions from both Fe and Ni.
What elements can be detected by ICP?
Elements Analyzed During an ICP Test Scan
| Aluminum | Antimony | Barium |
|---|---|---|
| Calcium | Cerium | Chromium |
| Erbium | Europium | Gallium |
| Holmium | Indium | Iron |
| Lutetium | Magnesium | Mercury |
What is the principle of ICP?
ICP Optical Emission Spectrometry Principle ICP, abbreviation for Inductively Coupled Plasma, is one method of optical emission spectrometry. When plasma energy is given to an analysis sample from outside, the component elements (atoms) are excited.
How do you do ICP analysis?
This method requires the use of liquefied samples, thus digestion of solid materials is often required. ICP analysis utilizes a plasma torch to vaporize fine droplets of the sample. Depending upon the ICP analysis test method, the atomic emission or ion mass is used to quantify the elements present in the sample.
Why is ICP good for metals?
ICP has less chemical interference than AAS or GFAAS due to the high temperature of the plasma and also has less matrix interference due to its mode of sample introduction. Furthermore, ICP has a variety of emission lines to choose from to reduce interference from other elements and to increase sensitivity.
How does ICP analysis work?
ICP analysis requires the use of liquified sample solutions, so solid samples and biological samples are often digested prior to analysis. Once the sample is liquid, the ICP uses Argon (Ar) carrier gas to aerosolize the sample sending only the smallest droplets through the chamber and into the Argon plasma torch.
How do you analyze ICP?
ICP analysis utilizes a plasma torch to vaporize fine droplets of the sample. Depending upon the ICP analysis test method, the atomic emission or ion mass is used to quantify the elements present in the sample.
What is the difference between ICP AES and ICP OES analysis?
The term ICP AES refers to Inductively Coupled Plasma Atomic Emission Spectrometry. This name is given because the technique is done by exciting atoms present in the sample that is going to be analyzed. There is no difference between ICP OES and ICP AES since they are two names for the same technique.
What is the best ICP test?
Triton lab is one of the most popular ICP test kits known. Triton labs ICP test are very similar to ATI test kits, however they test fewer parameters than ATI. At the time of writing this, Triton Labs ICP test will measure 36 parameters, including: Sodium.
What is the difference between ICP-MS and ICP OES?
ICP-OES is mainly used for samples with high total dissolved solids (TDS) or suspended solids and is, therefore, more robust for analyzing ground water, wastewater, soil, and solid waste. ICP-MS, on the other hand, is especially useful for analyzing samples with low regulatory limits.
How is IC-ICP-MS used in chromium speciation?
This IC-ICP- MS configuration allows for multi-isotopic detection, high sensitivity, a wide linear dynamic range, and minimal polyatomic interferences. This allows us to separate and quantify chromium species in even the most complex matrices while maintaining ultra-low detection limits.
Are there any problems with the ICP-MS determination?
Approach ICP-OES and ICP-MS determinations with caution. ICP-OES suffers from poor sensitivity and spectral interference issues and ICP-MS from the 40 Ar 35 Cl mass interference (other interferences include 59 Co 16 O, 36 Ar 38 Ar 1 H, 38 Ar 37 Cl, 36 Ar 39 K, 150 Nd 2+, and 150 Sm 2+) on the monoisotopic 75 As.
How does ICP-MS correct for polyatomic interferences?
Current ICP-MS instrumental software corrects for all known atomic “isobaric” inter- ferences, or those caused by over- lapping isotopes of different elements, but does not correct for most polyatomic interferences.
How is atomic absorption used in ICP-MS?
The use of atomic absorption using either the hydride generation or the graphite furnace techniques is very popular, although the use of ‘reaction cells’ that appear to eliminate the 40 Ar 35 Cl interference in ICP-MS is an option worth exploring.