What elements can ICP-MS detect?
Elemental analysis The ICP-MS allows determination of elements with atomic mass ranges 7 to 250 (Li to U), and sometimes higher. Some masses are prohibited such as 40 due to the abundance of argon in the sample.
Why is argon used in ICP-MS?
Inductively coupled plasma (ICP) reaches much higher temperatures than a combustion flame (>8000 K). Argon plasmas are conventionally used to provide a high-temperature, high-stability excitation source in ICPAES.
Can ICP-MS detect chloride?
Despite its sensitivity, there are no ASTM standard test methods that use inductively coupled plasma mass spectrometry (ICP-MS) for the measurement of chloride in crude oils.
How long does it take to analyze a sample using ICP-MS?
Quadrupole ICP-MS instruments are capable of measuring as many as 35 elements in a sample in two to three minutes.
How do you calculate data from ICP-MS?
Multiply the concentration by the total extraction volume and the dilution factor, then divide by the sample weight = concentration in mg kg-1. Determine the MDL by multiplying the DL by the typical sample extraction volume and the dilution factor, then dividing by the typical sample weight = concentration in mg kg-1.
What are the limitations of ICP-MS?
A major disadvantage is the high capital cost of the instrumentation. Heavier elements, such as lead, are well-suited for ICP-MS analysis, whereas lighter elements are prone to more interferences. Lighter elements which are not amenable to assay by ICP-MS include chromium and iron.
Why Nitrogen gas is used in ICP?
Nitrogen gas flows, in the range from 0.2 liter per minute to 7 liters per minute, are used to purge the optical section of the ICP-AES, in order to guide away gases that might disturb the emission measurement process. In the starting years of ICP, the supply of gases was controlled manually.
What does ICP-OES measure?
The ICP-OES principle measures the amount of emitted light at each wavelength and uses this information to calculate the concentration of lead in the sample.