Method for detecting residual iron content in degreasing agent

Abstract

The invention relates to a method for detecting the residual iron content in a degreasing agent. In the prior art, the residual iron content in the used degreasing agent cannot be accurately detected.A purpose of the present invention is mainly to solve the technical problem in the prior art. The technical scheme is that the method comprises: preparing a to-be-detected solution, wherein a certainamount of a to-be-detected degreasing agent sample solution is sucked and placed into a conical flask, a certain proportion of a hydrochloric acid solution is injected into the conical flask, the to-be-detected degreasing agent sample solution is subjected to acidification treatment, the acidified to-be-detected degreasing agent sample solution is transferred into a 100 ml volumetric flask, volume metering is performed to achieve a certain scale, and uniform shaking is performed to obtain the to-be-detected solution; determining the spectral intensity of iron in the to-be-detected solution byusing an inductively coupled plasma emission spectrometer; and calculating the residual iron content in the to-be-detected degreasing agent sample solution. According to the present invention, the method has advantages of high detection data accuracy, simple operation and low labor intensity, and can perform the detection and judgment on the actual cleaning effect of the cold rolling degreasing agent used in the production line.

Description

technical field [0001] The invention relates to a method for detecting residual iron content in a degreasing agent, in particular, to a method for detecting residual iron content in a degreasing agent used for cleaning electrotinned substrates before electroplating, and belongs to the auxiliary material metal cleaning agent for electroplating tinning process The field of chemical analysis technology. Background technique [0002] Degreasing agent, also known as metal cleaning agent, is the main chemical used in the pretreatment process. With the development of organic synthetic surfactants and continuous progress, from the early use of soaps to the use of various synthetic cleaning agents. Cleaning agents are divided into solid cleaning agents and liquid cleaning agents. [0003] Tinplate (commonly known as tinplate) refers to a steel plate coated with a thin layer of metal tin on the surface. It has good corrosion resistance and is mainly used in food canning industry, ch...

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Problems solved by technology

[0008] The purpose of the present invention is to provide a detection method for the residual iron content in the degreasing agent, which mainly solves the technical problem that the residual iron content in the used degreasing agent cannot be accurately detected, provides a method for the evaluation of the degreasing efficiency of the degreasing agent, and provides a method for degreasing Agent replacement provides a basis for

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