Card assembly for fastly inspecting lead content and its production

Abstract

A card for quickly detecting content of lead is filtering paper with dried color development liquid. The said color development liquid is prepared by weight share from 3-15 of saponite, 0.05-10 of povidone -K30, 0.02-2 of sodium rosolic acid and 100 of alcohol solution.

Description

technical field The invention relates to a detection device and a preparation method, in particular to a detection card assembly capable of conveniently and quickly detecting lead content and a preparation method thereof, belonging to the detection technical field. Background technique 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 work 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 lead, which is very ...

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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

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