Analysis method for sample containing mercury
AssigneeBl Tec K.K.
InventorsYorihiro KUMAZAWA, Ryosei KANNO, Nodoka TAKAHASHI
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Abstract
For the purpose of providing an analysis method that makes it possible to use, for example, ICP-MS to analyze, with high accuracy, a sample containing mercury, a method for analyzing a sample containing mercury includes: a pretreatment step of adding an oxidizer to a sample containing mercury to prepare a sample solution so as to achieve an oxidation state in which an oxidation-reduction potential is not less than +0.80 V; and an analysis step of subjecting the sample solution which has been prepared in the pretreatment step to a quantitative analysis or a qualitative analysis while maintaining the oxidation state.
Claims12
A method for analyzing a sample containing mercury, comprising:
- a pretreatment step of adding an oxidizer to a sample containing mercury to prepare a sample solution so as to achieve an oxidation state in which an oxidation-reduction potential is not less than +0.80 V;
- and
- an analysis step of subjecting the sample solution which has been prepared in the pretreatment step to a quantitative analysis or a qualitative analysis while maintaining the oxidation state.
A method for analyzing a sample containing mercury,
- the method being carried out by a flow analysis method including:
- a sample introduction step of introducing, into a tube, a sample containing mercury;
- and
- an analysis step of carrying out a quantitative analysis or a qualitative analysis with respect to the sample, said method comprising:
- a pretreatment step of, prior to the sample introduction step, adding an oxidizer to the sample containing mercury to prepare a sample solution so as to achieve an oxidation-reduction potential of not less than +0.80 V and/or a reagent addition step of adding the oxidizer to the sample so as to achieve an oxidation-reduction potential of not less than +0.80 V, the sample being transferred inside the tube;
- a heating step of carrying out a heat treatment with respect to the sample to which the oxidizer has been added;
- a cooling step of cooling the sample which has been subjected to the heat treatment and which is transferred inside the tube;
- and
- a gas-liquid separation step of removing gas which is present in the tube after cooling,
- a quantitative analysis or a qualitative analysis being carried out with respect to the sample from which the gas has been removed in the gas-liquid separation step.
Dependencies are inferred from the claim text.