What is ICP-OES used for?
What is ICP-OES used for?
The ICP-OES Principle Inductively Coupled Plasma Optical Emission spectroscopy (ICP-OES) is an analytical technique used to determine how much of certain elements are in a sample. The ICP-OES principle uses the fact that atoms and ions can absorb energy to move electrons from the ground state to an excited state.
How do you prepare a sample for ICP-OES?
Heating acids is performed on a hot plate, or by using a microwave digestion system that employs pressurized vessels to produce even higher reaction temperatures. Acid digestion of soils and sludges is one example of solid sample preparation for ICP-OES.
How do you analyze ICP-OES data?
How do you analyze ICP-OES data and what does it tell you? General guidelines for analysis of ICP-OES data are to look at the intensity of light emitted at particular wavelengths and compare that to calibration data to determine the concentration of atoms that are emitted at that particular wavelength.
What are the advantages of ICP-OES?
The environmental safety, bio-remediation, food quality check, diagnostic and biological research laboratories have been frequently using ICP-OES techniques because comparatively high throughput, simultaneous multi-element analysis, high precision, massive dynamic linear range, high throughput and low cost are major …
Which detector is used in ICP-OES?
Detectors. Historically, light intensity was measured with photomultiplier technology. Currently, solid-state charge transfer devices (CTDs) are the detectors of choice for ICP-OES and have almost completely replaced photomultiplier tubes.
Why is nitric acid used in ICP-OES?
Nitric acid is used because all nitrate salts are soluble in water. If we use H2SO4 or HCl they will produce sulphate or chloride salts. Some metal sulphates and chlorides are not very soluble in water.
How do you calibrate ICP-OES?
Start the calibration: From the ICP-OES home page, select Instrument > Calibration and under the Instrument heading select the appropriate calibration mode check box, then select Calibrate. The instrument will complete the calibration and report onscreen calibration results.
How many elements can ICP-OES detect?
The constituents of an unknown sample can then be identified and measured. ICP-MS offers extremely high sensitivity to a wide range of elements. Bulk chemical analysis technique that can determine simultaneously up to 70 elements in a single sample analysis.
What is the sensitivity of ICP-OES?
Modern ICP-MS instruments range in sensitivity in this mass region from around 10 Mcps/(mg/L) up to 1000 Mcps/(mg/L) (7). The difference in sensitivity of these two isotopes is due primarily to difference in natural abundance and ionization in the plasma.
Why argon is used in ICP-OES?
Argon is important for OES Spectrometers analyzing light elements such as Carbon, Phosphorous, Sulfur, and Nitrogen. These elements are below 200 nanometers (nm) in wavelength and the argon allows the optic of a spectrometer to see from 200 and below.