Method for measuring cadmium content in smoke tipping paper

Abstract

A method for detecting cadmium content in cigarette used tipping paper is characterized in that the method can quickly and accurately detect the cadmium content in the cigarette used tipping paper by the following steps: adopting mixed acid to carry out microwave digestion for a sample, removing the acid and fixing volume, conducting detection with a graphite furnace atomic absorption spectrophotometer, etc. The method overcomes the shortcoming of the prior art in processing the sample. Compared with the traditional electric heating plate digestion manner, the microwave digestion manner can reduce the usage of samples and strong acid, improve digestion ability, cause less loss to elements to be detected in the sample and less damage to an operator, and facilitate operation. The digestion system of compound acid is completely applicable to the special material of the cigarette used tipping paper. The acid removing process is quick and easy, and a matrix modifier is adopted to eliminateinterference. After being detected by optimal heating programs, ashing temperature and atomization temperature related to atomic absorption spectrometry, the special material of the cigarette used tipping paper is recovered with high rate, and detected with accurate result. The working efficiency and the economic benefits are significantly improved.

Description

Determination method of cadmium content in cigarette tipping paper Technical field: The invention belongs to the technical field of physical and chemical inspection of tipping paper for cigarettes, and mainly relates to the technical field of measuring trace elements of tipping paper for cigarettes, in particular to a method for directly measuring cadmium content in tipping paper for cigarettes by using a graphite furnace atomic absorption spectrometer method. Background technique: According to the requirements of my country's health law, safety and health inspections should be carried out for various products that directly contact the human oral cavity. As people pay more and more attention to smoking and health issues, the safety, sanitation and environmental protection of smoking materials are getting more and more attention from all aspects. Among them, the content of heavy metals, as one of the safety indicators, has attracted more and more attention at home and abro...

AI Technical Summary

Problems solved by technology

From the above results, the cadmium results tested by the national recommended standard for the same sample have large deviations, and the parallel results are not ideal

The reasons: First, the composition of the cigarette tipping paper sample is relatively complex, containing a large amount of silicon magnesium oxide, iron oxide, titanium oxide, etc., which are difficult to digest. Therefore, when testing according to the recommended standards, the cigarette tipping paper The sample could not be completely digested, the solution was turbid and had a large amount of precipitates, and it was colored, which caused more interference to the determination of cadmium content; second, the acid removal conditions and measurement conditions after digestion were not applicable, and the atomization process was required The relevant heating program, ashing temperature, atomization temperature and other conditions are optimized and then determined

Therefore, if the national recommended standard: GB / T5009.15 is used to measure the cadmium content in cigarette tipping paper samples, it cannot truly reflect the cadmium content in cigarette tipping paper samples, so the above national standards cannot be applied

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