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Card assembly for quickly inspecting lead content and its production

A technology for detecting card and lead content, applied in the field of detection, can solve the problems of poor stability, low sensitivity of color reaction, inconvenient to use and carry.

Active Publication Date: 2009-09-16
澳诺(中国)制药有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Chinese patent 96116201.5 discloses "a reagent for testing lead and its testing method", uses water as the solvent of the chromogenic agent, fades under air or light conditions, no longer plays a color reaction, and has the disadvantage of poor stability. Matching two test solutions, it is inconvenient to use and carry, and the sensitivity of the color reaction is low

Method used

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  • Card assembly for quickly inspecting lead content and its production
  • Card assembly for quickly inspecting lead content and its production

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1. take by weighing 0.2g of sodium roseate and 100g of ethanol solution according to the proportioning to make a supersaturated solution, then take by weighing 5g of talcum powder, povidone-K30.05g and add in the above-mentioned supersaturated solution and stir evenly; prepare 1 % concentration of citric acid aqueous solution.

Embodiment 2

[0027] Embodiment 2. Take by weighing 0.02g of sodium roseate and 100g of ethanol solution to make a supersaturated solution according to the proportioning ratio, then take by weighing 8g of talcum powder and 30.5g of povidone-K and add it into the above-mentioned supersaturated solution and stir evenly; prepare 3 % concentration of citric acid aqueous solution.

Embodiment 3

[0028] Embodiment 3. take by weighing sodium rhodine 2g, ethanol solution 100g to make supersaturated solution according to proportioning, then take by weighing 15g of talcum powder, povidone-K35g and add in the above-mentioned supersaturated solution and stir; prepare 6% concentration Aqueous solution of citric acid.

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Abstract

A fast lead content detection card component and a preparation method thereof belong to the technical field of detection and are used to solve the problem of convenient and quick detection of lead content. Its technical solution includes a detection card, a sampling liquid and a cotton swab. The detection card is provided with a filter paper with a dry chromogenic solution, and the chromogenic solution is configured from raw materials in the following weight units: talcum powder 3-15, poly Vitone-K30 0.05-10, sodium rhodinate 0.02-2, ethanol solution 100, the sampling liquid is 1-10% citric acid aqueous solution. The invention can be accurately, conveniently and quickly used to monitor the lead pollution on the surface or under the surface of the home, office or other activity places and the stored items. In addition, it also has the characteristics of high sensitivity and good reliability, which can be used not only in scientific research or analytical experiments, but also for the general public in various fields.

Description

technical field [0001] The invention relates to a detection device and a preparation method, in particular to a detection card component capable of convenient and fast detection of lead content and a preparation method thereof, belonging to the detection technical field. Background technique [0002] Lead is an element widely distributed in nature, and its content in the earth's crust is about 0.0016%. Lead is mainly used in the manufacture of lead batteries, radioactive radiation, X-ray protective equipment, building materials, etc., and lead alloys are also widely used. Lead compounds widely exist in human life, production, and working environments, such as paint, ceramics, glass, printing paper, batteries, pigments, rubber, plastics, explosives, and so on. Due to the widespread use of lead in various fields, lead pollution in the environment is becoming more and more serious, such as water sources, food, air, dust, and household and office supplies may be polluted by lea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/78
Inventor 王杨鄢德俊刘君
Owner 澳诺(中国)制药有限公司