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Electrochemical analysis method, electrochemical analysis device and reagent set

An electrochemical analysis and electrochemical technology, applied in the direction of material electrochemical variables, etc., can solve the problems of hindering high-precision analysis, complex operation, large and expensive equipment, etc.

Inactive Publication Date: 2018-10-16
HORIBA LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the apparatus for performing these analyzes is bulky, expensive, and complicated to operate
[0004] On the other hand, although an attempt is being made to analyze cadmium electrochemically (Patent Document 1), when analyzing cadmium contained in food, the organic substances contained in the food act as interference factors and hinder high-precision analysis. accomplish

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  • Electrochemical analysis method, electrochemical analysis device and reagent set
  • Electrochemical analysis method, electrochemical analysis device and reagent set
  • Electrochemical analysis method, electrochemical analysis device and reagent set

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Embodiment Construction

[0050] Hereinafter, the electrochemical measurement device of the present invention will be described with reference to the drawings.

[0051] The electrochemical measurement device 100 of the present embodiment analyzes cadmium contained in biologically derived samples such as rice by three-electrode stripping voltammetry using a counter electrode, a reference electrode, and a working electrode.

[0052] (device structure)

[0053] Specifically, the electrochemical measuring device 100 such as figure 1 As shown, a measurement unit 2 for accommodating a liquid sample is provided, a counter electrode 3, a reference electrode 4, and a working electrode 5 arranged in contact with the liquid sample, and a potential changing part 6 for changing the potential of the working electrode 5 is accommodated in the measurement unit 2. The liquid replacement mechanism 11 that replaces at least a part of the liquid sample with the acidic buffer solution as the measurement solution, the curr...

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Abstract

The present invention provides an electrochemistry analysis method, an electrochemistry analysis device and a test kit which can detect and quantify cadmium contained in a sample coming from a biont at high sensitivity and precision. The electrochemistry analysis method is to analyze the cadmium contained in the sample coming from the biont in an electrochemistry manner by using a counter electrode (3) and an action electrode (5), and possesses an extraction step, a step of adding acid which possesses oxidability to the sample coming from the biont and does not form a complex with the cadmium, and a step of extracting the cadmium from the above sample coming from the biont.

Description

technical field [0001] The present invention relates to a method, device and reagent set for electrochemically detecting cadmium contained in a sample derived from organisms. Background technique [0002] Cadmium is known to be toxic to the human body, and if cadmium accumulates in the body, kidney function, etc. will be impaired. Therefore, standards have been set for the amount of cadmium contained in foods including rice. According to the Food Sanitation Law, brown rice is regulated to be less than 1ppm. If it contains cadmium above the standard value, it cannot be sold, and all of it is incinerated. In addition, according to the notice of the Ministry of Food and Agriculture, all the rice in which cadmium was detected in the brown rice was 0.4ppm or more was used for industrial purposes. [0003] Conventionally, as methods for analyzing cadmium, atomic absorption spectrometry, ICP emission spectrometry, ICP mass spectrometry, etc. are known as analytical methods prescri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/26
Inventor 村田道生山贯干人
Owner HORIBA LTD