What is an ICP instrument?
What is an ICP instrument?
Inductively coupled plasma mass spectrometry (ICP-MS) is a type of mass spectrometry that uses an inductively coupled plasma to ionize the sample. It is known and used for its ability to detect metals and several non-metals in liquid samples at very low concentrations.
What is HPLC ICP-MS?
A high-performance liquid chromatography (HPLC) in combination with inductively coupled plasma mass spectrometry (ICP-MS) as an elemental specific detector was used for the speciation analysis of arsenic compounds in urine and serum samples from Vietnam.
How do you prepare a sample for ICP-MS?
Sample preparation for ICP-MS is relatively simple; biological samples are usually diluted or thermally digested before analysis. Common diluents include dilute acids (e.g. nitric acid, hydrochloric acid) or alkali (e.g. ammonium hydroxide, tetramethylammonium hydroxide).
What is arsenic speciation?
The speciation of arsenic species including the non-reducible arsenic species (arsenobetaine and arsenosugars) requires the use of UV oxidation system. This, in conjunction with an oxidising reagent, helps the breakdown of non-reducible arsenic species to a form that will react with NaBH4 so these can be quantified.
How do you calculate ICP?
Quantitative assessment of ICP can be made noninvasively in two different ways: by measuring changes in diameter of the optic nerve sheath with an appropriate technique (ultrasound or MRI), or by using ophthalmodynamometry to determine the pressure in the central retinal vein, which is normally slightly higher (1- …
What is the difference between OES and AES?
Difference – ICP OES vs ICP AES The term ICP OES refers to Inductively Coupled Plasma Optical Emission Spectrometry. This name is given since this technique is optical (done in relation to the physical action of light). The term ICP AES refers to Inductively Coupled Plasma Atomic Emission Spectrometry.
What should CEO / CE ratio be for ICP-MS?
On commercial ICP-MS instruments, reported CeO/Ce ratios vary between about 3 % 8 and 0.3 %, 9 the lower figure coming from systems for which matrix tolerance is a high priority. There are three specific considerations in the analysis of trace elements in a high sample matrix.
Which is the best ICP instrument on the market?
NexION 2000 ICP-MS – the most versatile ICP-MS on the market, featuring an array of proprietary and proven technologies that come together seamlessly to handle any sample matrix, any interference, and any particle size.
Can you use ICP-MS with CCT without energy discrimination?
I use a Thermo X II series ICP-MS for analysis of trace elements in biological samples. In order to reduce polyatomic interferences it is normal working with collision cell technology (CCT) with or without energy discrimination (ED). As collision gas for CCT I use 8% H2 in He.
What are the factors that affect the ICP-MS?
There are several factors that will affect the efficiency of this process and these factors will have a direct effect on the performance of the ICP-MS instrument. The key factors are plasma temperature, sample residence time, sample aerosol density and water vapour content of the sample aerosol.
