Heavy metal standard sample in packaging paper and preparation method of heavy metal standard sample

Abstract

The invention belongs to the technical field of preparation of standard substances and discloses a heavy metal standard sample in packaging paper and a preparation method of the heavy metal standard sample. The preparation method comprises the following steps that: 1, the surface of blank packaging paper is polished to be rough; 2, a heavy metal mixed solution is prepared; 3, a bearing matrix of atarget element is prepared; 4, a protective film base material is prepared; 5, the two surfaces of blank packaging paper are uniformly coated with the bearing matrix containing the target element, and the blank packaging paper is dried; and 6, the two surfaces coated with the bearing matrix is coated with the protective film base material, drying and cutting are performed to prepare the heavy metal standard sample in the packaging paper. The heavy metal standard sample in the packaging paper is prepared and can be used for comparison of heavy metal detection data in the packaging paper in a laboratory, accuracy verification of a detection method, calibration of a detection instrument, quality control and examination of a test result and the like.

Description

technical field [0001] The invention belongs to the technical field of standard samples, in particular to a standard sample of heavy metals in packaging paper and a preparation method thereof. Background technique [0002] The invention of paper has epoch-making significance in the history of human development and has greatly promoted the progress of human civilization. In today's era of prosperous self-media, paper media still plays an important role. The use of paper is everywhere, especially in printing, packaging and other industries. With the development of society and the improvement of people's awareness of environmental protection, paper products are more and more valued by modern society because of their green and environmentally friendly materials. [0003] In the paper production process, various chemicals such as bleaching agents, processing aids, printing inks, antiseptics and fungicides need to be added to improve the performance and aesthetics of various pape...

AI Technical Summary

Problems solved by technology

[0005] The problem of excessive heavy metal content in paper has always been paid attention to by people, especially lead, chromium, cadmium, and arsenic are more harmful to human beings. Heavy metals cannot be decomposed in the human body, and it is difficult to excrete them to cause enrichment, which ultimately affects human health. cause harm

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