Method for analyzing metal microparticles, and inductively coupled plasma mass spectrometry method
A technology of metal particles and plasma, applied in particle separation tubes, analysis materials, ion sources/guns, etc., can solve problems such as difficult preparation of metal particles and ineffective quantitative analysis of metal particles
Active Publication Date: 2021-05-18
IAS LIMITED
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[0033] In this embodiment, a case where a sample of a solution system is analyzed will be described as an example. figure 2 It is a schematic diagram showing the inductively coupled plasma mass spectrometer of this embodiment. figure 2 The shown ICP-MS is connected to the standard solution introduction device 2 . The standard solution introduction device 2 is composed of a standard solution storage container 201 for storing the standard solution, a syringe pump 202 for sucking and discharging the standard solution, a standard solution nebulizer 203 for supplying the standard solution, and a standard solution spray chamber 204 . In addition, a waste container 205 for disposal is also provided. Next, the syringe pump 202 is used with the capability to control the flow rate of 0.1 to 99.0 μL / min. The controlled flow rate of this syringe pump can be calculated from the physical workload of the ball screw used in the injector constituting the syringe pump. In addition, the dev...
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Abstract
The present invention provides a method that, when using an inductively coupled plasma mass spectrometer to analyze a sample containing metal microparticles, enables analysis without necessitating the use of metal microparticles as a standard. The present invention relates to a method for analyzing metal microparticles in a liquid using an inductively coupled plasma mass spectrometer, wherein the spectrometer is provided with a standard-solution introduction device constituted from: a standard-solution storage means in which a standard solution containing known concentrations of specific elements is stored; a syringe pump that draws in and discharges the standard solution; and a solution introduction means that has a standard-solution nebulizer to which the standard solution is supplied and a standard-solution spray chamber. The standard solution is directly supplied to the standard-solution nebulizer at a flow rate of 3 [mu]L / min or less, and the particle size value of metal microparticles is calculated from the specific elements on the basis of a physical amount of the specific elements introduced and the standard-solution signal intensity obtained by a detector.
Description
technical field [0001] The present invention relates to an analysis method of metal particles contained in liquid or gas and an inductively coupled plasma mass analysis method using the analysis method. Background technique [0002] In recent years, it has been known to use an inductively coupled plasma mass spectrometer (hereinafter abbreviated as ICP-MS as the case may be) to analyze metals, organic substances, etc. metal etc. The metal to be analyzed may exist in liquid or gas in the form of fine metal particles, and it is known that the fine metal particles are also analyzed by ICP-MS. [0003] In this ICP-MS, the device configuration for analysis of the solution system is as follows figure 1 As shown, it is equipped with: a sample storage part 101, which stores a sample solution as a measurement object; a sample introduction part, which has a sample nebulizer 102 and a sample spray chamber 103; a torch part 104, which forms plasma to ionize the sample; The interface ...
Claims
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IPC IPC(8): G01N27/626H01J49/04H01J49/10
CPCH01J49/105H01J49/0009G01N27/623G01N27/622G01N27/628H01J49/04H01J49/10
Inventor 川端克彦一之瀬达也西口讲平
Owner IAS LIMITED