Method for measuring harmful heavy metal substances arsenic and lead in tobacco tipping paper
A technology for cigarette tipping paper and a determination method, which is applied in the determination of lead and the field of harmful heavy metal arsenic, can solve the problems of affecting the accuracy of determination, high cost of instruments, low anti-interference, etc., so as to save sample processing time and simplify traditional method, the effect of improving the accuracy
Active Publication Date: 2013-09-18
楚雄市华丽包装实业有限责任公司
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Problems solved by technology
[0005] Cigarette tipping paper is solid, and the main components are mostly inorganic elements and organic elements. The acid system ratio is not properly selected and the traditional microwave digestion method cannot complete the decomposition of the sample, and the interference is large. The acid system ratio is wrong. Improper method selection will directly affect the accuracy of the measurement, low anti-interference and low accuracy during the measurement, and the cost of the instruments used in the above-mentioned traditional methods is high
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[0017] 1) Make three samples of cigarette tipping paper to be determined: Weigh 5g of cigarette tipping paper as the sample to be determined, and add 2 parts of 10% obtained after diluting with 65% nitric acid purchased in the market Nitric acid, then add 1 part of 10% sulfuric acid diluted with commercially available 95% sulfuric acid, 1 part of 10% oxalic acid diluted with commercially available oxalic acid of 50%, 1 part of commercially available 10% perchloric acid obtained by diluting the purchased concentration of 30% perchloric acid, 1 part of 10% hydrochloric acid diluted with commercially available hydrochloric acid of 38%, 1 part of commercially available concentration 10% phosphoric acid diluted with 40% phosphoric acid, 1 part of 10% hydrofluoric acid diluted with 10% commercially available hydrofluoric acid and 1 part of 50% commercially available The 10% ascorbic acid obtained after dilution of ascorbic acid, any combination of three acids among the seven acids, ...
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The invention discloses a method for measuring trace heavy metal arsenic and lead in tobacco tipping paper, and in particular relates to a method for measuring the content of arsenic and lead in the tobacco tipping paper by using a calibrated atomic fluorescence spectrophotometer after the tobacco tipping paper is digested by nitric acid and sulfuric acid on an electric heating plate or in an electric furnace. The conventional method is simplified, the acid is not required to be driven repeatedly, sample treatment time can be saved, the interference of antimony and nickel elements in a detection result can be effectively eliminated, a tipping paper sample is quickly and efficiently measured, measuring accuracy is improved, and the method is a novel and applicable electric heating nitric acid digestion atomic fluorescence quantitative measuring method for the content of the arsenic and the lead in the tobacco tipping paper.
Description
technical field [0001] The invention discloses a method for determining harmful heavy metals arsenic and lead in tipping paper for cigarettes. Background technique [0002] Cigarette tipping paper is one of the cigarette materials that smokers directly contact with the oral cavity. The harmful heavy metals arsenic and lead in cigarette tipping paper may directly enter the human body through oral contact, endangering the health of smoking consumers. Therefore, the YC171-2008 "Cigarette Tipping Paper" standard lists arsenic and lead in cigarette tipping paper as the primary monitoring elements. [0003] At present, domestic arsenic detection methods are limited to atomic absorption method, silver method, and arsenic spot colorimetric method; fire or graphite furnace atomic absorption method and dithizone colorimetric method are generally used for lead determination, and these methods have insufficient detection sensitivity. high and low accuracy. [0004] The existing detec...
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IPC IPC(8): G01N21/64G01N1/28G01N1/44
Inventor 王守成段斌陈芝国尹磊高伟
Owner 楚雄市华丽包装实业有限责任公司