The quantitative multi-element analysis of human liver tissue by spark-source mass spectrometry (CAT#: STEM-ST-0284-LJX)

Introduction

The service determined the 13 elements in human liver tissue by spark-source mass spectrometry. Spectral interferences are identified and calibration obtained by using carefully formulated synthetic standards. The relative standard deviation of this method is typically ± 9% for replicate analyses of a pooled liver ash obtained by oxygen plasma ashing, and ± 16% for replicate tissue samples taken through the whole analytical procedure. The accuracy of the method was checked by conducting complementary determinations by flame atomic absorption spectrometry.

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Principle Applications Procedure Materials Notes Related Products

Principle

By using vacuum spark discharge, the energy accumulated in a small volume can make the material in the volume suddenly evaporate and ionize, so as to obtain the characteristic ion current information.

Applications

(1) Solid spark source mass spectrometry: impurity analysis of high-purity materials, which can be applied to semiconductor materials, non-ferrous metals, and building materials industries;
(2) Gas isotope mass spectrometry: determination of stable isotopes C, H, N, O, S and radioactive isotopes Rb, Sr, U, Pb, K, Ar, which can be applied to geology, petroleum, medicine, environmental protection and agriculture.

Procedure

(1) An electric field is applied between the electrodes to ionize part of the carrier gas (such as argon) in the electric field;
(2) The "cathode ray" or "anode ray" generated by ionization accelerates in the direction of the opposite polarity in the residual gas, bombards the anode or cathode, and vaporizes a part of the substance to be measured on the plate;
(3) Part of the atoms of the vaporized substance are ionized in the subsequent discharge process.

Materials

• Sample Type:
Human liver tissue

Notes

Before starting the machine, check whether the water (water cooler), electricity, gas (argon/nitrogen), temperature, humidity, and exhaust air of the instrument are normal.

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