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Method for simultaneously determining forsterite value and trace elements in olivine

A technology of trace elements and olivine value, which is applied in measuring devices, soil material testing, electrical components, etc., can solve the problems of long test period and high test cost, and achieve the effect of overcoming long test period.

Active Publication Date: 2020-07-10
INST OF GEOLOGY & GEOPHYSICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the problems existing in the prior art, the present invention provides a method for simultaneously determining the forsterite value and trace elements in olivine, which solves the problems of long test period and high test cost in the prior art

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  • Method for simultaneously determining forsterite value and trace elements in olivine

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Embodiment Construction

[0030] The specific embodiments of the present invention are described below so that those skilled in the art can understand the present invention, but it should be clear that the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes Within the spirit and scope of the present invention defined and determined by the appended claims, these changes are obvious, and all inventions and creations using the concept of the present invention are included in the protection list.

[0031] like Figure 1 to Figure 3 As shown, two olivine standard substances (MongOLSh11-2 and XEN) and a set of olivine in Mount Emei picrite are examples to introduce the specific implementation of the technical method of the present invention. The Fo values ​​and trace elements of the two olivine reference materials have been reported in the literature. A set of olivine (N=150) in Mount Emei picrite has been characterize...

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Abstract

The invention discloses a method for simultaneous determining forsterite value and trace elements in olivine, and the method comprises the following steps: S1, selecting a sample which is an olivine sample; S2, placing the sample into an LA-ICP-MS sample chamber, and adjusting the position of the sample in the optical axis direction to enable a laser beam to be well focused; S3, optimizing the instrument so that the noise ratio of the 57Fe signal is optimal; S4, receiving all mass peaks of the sample by using an electron multiplier (SEM) of a single receiving system in an LA-ICP-MS peak hopping mode. The problems in the prior art that the testing period is long and the testing cost is high are solved.

Description

technical field [0001] The invention relates to the field of methods for determining the forsterite value and trace elements in olivine, in particular to a method for simultaneously determining the forsterite value and trace elements in olivine. Background technique [0002] Olivine is one of the most important minerals in the upper mantle of the earth, widely exists in basic rocks and mantle peridotite, and can exist in diamond in the form of inclusions. Therefore, the study of olivine is of great significance for understanding the mantle dynamics and melting process. Olivine has a relatively simple chemical composition structure (Mg, Fe) 2 SiO 4 , usually oxides of three major elements MgO, FeO and SiO 2 It can account for more than 99% of the total mass of olivine. The geochemical indicators of olivine mainly include forsterite (Fo) value and trace elements. The formula for calculating the Fo value of olivine is 100×Mg / (Mg+Fe), which is given in molar form. The Fo v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/62G01N27/626
CPCG01N27/62G01N33/24H01J49/0463H01J49/105H01J49/0036H01J49/164
Inventor 吴石头吴亚东杨岳衡王浩黄超谢烈文
Owner INST OF GEOLOGY & GEOPHYSICS CHINESE ACAD OF SCI
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