A formaldehyde detection card for aquatic products

A technology for detection cards and aquatic products, which is applied in the direction of analyzing materials through chemical reactions and observing the influence of chemical indicators on materials, etc. It can solve the problems of complex detection steps and inability to meet the needs of popularization.

Active Publication Date: 2018-11-27
WUHAN POLYTECHNIC
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] In summary, the existing problems in the prior art are: the existing method for detecting formaldehyde has complex detection steps and cannot meet the needs of popularization

Method used

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  • A formaldehyde detection card for aquatic products

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Embodiment Construction

[0014] In order to further understand the content, features and effects of the present invention, the following examples are given, and detailed descriptions are given below with reference to the accompanying drawings.

[0015] The structure of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0016] Such as figure 1 As shown, the aquatic product formaldehyde detection card provided by the embodiment of the present invention includes a hand-held area 1, a detection area 2, and a groove 3.

[0017] The detection area 2 is concavely provided with a plurality of grooves 3, the outer side of the handheld area 1 is wrapped with a plastic film, the surface of the detection area 2 is pasted with a detachable plastic film, and the detection area 2 is a colorless test paper embedded with solid sodium hydroxide.

[0018] Working principle of the present invention:

[0019] When in use, add copper sulfate and the solution to be tes...

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Abstract

The invention belongs to the technical field of formaldehyde detection, and discloses a formaldehyde detection card for aquatic products. The formaldehyde detection card includes a handheld area and adetection area. A plastic film is wrapped around the handheld area. A plurality of grooves are concavely arranged in the detection area. A separable plastic film is adhered to the surface of the detection area. The detection area is a colorless test paper soaked with a fehling reagent. According to the principle that formaldehyde can react with the fegling reagent, the fegling reagent immerses the detection card, and the formaldehyde can be indicated to be existed if the detection area turns brick red. The detection card is convenient in use and is suitable for popularization and application.Sodium hydroxide (NAOH) is embedded in a detector bar as a solid reagent, when copper sulphate and to-be-detected liquid are added to a sodium hydroxide embedding area, the dissolution heat release of the sodium hydroxide is used to achieve the water bath heating effect. The method is simple and rapid.

Description

technical field [0001] The invention belongs to the technical field of formaldehyde detection, in particular to a formaldehyde detection card for aquatic products. Background technique [0002] If aquatic products are soaked in formaldehyde, they will have anti-corrosion, bleaching and fresh-keeping effects, but formaldehyde is extremely harmful to the human body. Therefore, aquatic products detected to contain formaldehyde cannot be eaten. Generally, Fehling’s reagent is equipped first, and then the liquid to be tested is added to the test tube and then heated in a water bath to realize the detection of formaldehyde. The detection steps are complicated and cannot meet the needs of popularization. Formaldehyde in aquatic products can be detected by spectrophotometer and high performance liquid chromatography (National Industry Standard SC / T3025-2006). Both detection methods require the sample to be tested to be brought back to the laboratory for a series of pretreatments be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/78
CPCG01N21/78
Inventor 陈鸣丽
Owner WUHAN POLYTECHNIC
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