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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 impact on chemical indicators. It can solve the problems of complex detection steps and failure to meet the needs of popularization. The method is simple, convenient to uncover, and the effect of preventing moisture pollution

Active Publication Date: 2021-08-24
合肥名龙电子科技有限公司
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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, which includes a hand-held area and a detection area. A detachable plastic film is pasted on the surface of the area, and the detection area is a colorless test paper soaked in Fehling's reagent; the present invention utilizes the principle that formaldehyde can react with Fehling's reagent, and immerses the Pehring's reagent into the detection card. Brick red means the presence of formaldehyde, easy to use, and very suitable for popularization. Sodium hydroxide (NAOH) is embedded in the test strip as a solid reagent. When copper sulfate and the solution to be tested are added dropwise to the sodium hydroxide embedding area, the sodium hydroxide is used to dissolve and release heat to achieve the heating effect of the water bath. The method is simple and convenient. fast.

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 Patents(China)
IPC IPC(8): G01N21/78
CPCG01N21/78
Inventor 陈鸣丽
Owner 合肥名龙电子科技有限公司
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