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Unit Code 83396:
Vanadium, Serum

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Method Description

Aqueous acidic calibrating standards with serum matrix are

diluted with an aqueous nitric acid diluent containing a gallium

internal standard. Specimens are then aspirated into a pneumatic

nebulizer and the resulting aerosol is directed to the hot plasma

discharge by a flow of argon. In the annular plasma, the aerosol

is vaporized, atomized, and then ionized. The ionized gasses

plus neutral species formed in the annular plasma space are

aspirated from the plasma through an orifice into a quadrapole

mass spectrometer. The mass range from 1 to 263 amu is rapidly

scanned multiple times and ion counts tabulated for m/z 51

(vanadium) and 69 (gallium). Instrument response is defined by the

linear relationship of analyte concentration versus ion count ratio

(analyte ion count/internal standard ion count). Analyte concentrations

are derived by reading the ion count ratio for each mass of interest

and determining the concentration from the response line. (Nixon DE,

Neubauer KR, Eckdahl SJ, et al: Evaluation of a tunable bandpass

reaction cell for an inductively coupled plasma mass spectrometer

for the determination of chromium and  vanadium in serum and urine.

Spectrochim Acta Part B At Spectrosc 2002;57(5);951-966)

Performing Laboratory Location

Rochester

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