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Method for determining content of calcium carbonate in cigarette paper

A technology of calcium carbonate and cigarette paper, applied in the direction of color/spectral property measurement, etc., can solve problems such as unsuccessful reports, and achieve the effects of good application prospects, fast analysis speed, high accuracy and precision

Active Publication Date: 2012-06-20
YUNNAN TOBACCO QUALITY SUPERVISION MONITORING STATION
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

If this method is applied to the detection of cigarette paper, it should be able to overcome the shortcomings of existing detection methods, but there is no successful report in the prior art

Method used

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  • Method for determining content of calcium carbonate in cigarette paper
  • Method for determining content of calcium carbonate in cigarette paper
  • Method for determining content of calcium carbonate in cigarette paper

Examples

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Embodiment 1

[0029] 1. Experimental principle, materials and methods

[0030] 1.1 Experimental principle

[0031] Cigarette paper samples were reacted with a known exact amount of excess HCl solution, and the remaining H+ was detected spectrophotometrically. The acid content is directly proportional to the concentration of the color product and can be measured at 352nm. Calcium carbonate content (calculated as CaO) of cigarette paper can be deduced from the acid content.

[0032] 1.2 Materials and Instruments

[0033] Potassium iodate (AR, Shanghai Runjie Chemical Reagent Co., Ltd.); Potassium iodide (AR, Shanghai Chemical Reagent Co., Ltd.), hydrochloric acid (AR, Xilong Chemical Plant, Shantou City, Guangdong); calcium carbonate (working reference reagent (capacity), Tongji Institute of trace elements); distilled water with carbon dioxide removed (self-made); 4 cigarette paper samples are products of Yunnan Hongta Lanying Paper Co., Ltd.

[0034] JA5002 balance (sensitivity: 0.01g, S...

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Abstract

The invention discloses a method for determining the content of calcium carbonate in cigarette paper, which comprises the steps of: treating the cigarette paper to be determined with hydrochloric acid and distilled water and filtering, adding a potassium iodate aqueous solution and a potassium iodide aqueous solution into the filtrate for reaction; diluting with distilled water without carbon dioxide and analyzing with a spectrophotometer at wavelength of 352nm; and then drawing a standard curve and calculating to obtain the result. In the invention, the spectrophotometer is applied to determining calcium carbonate in cigarette paper for the first time. The recovery rate is 98.2-100.8% and variation coefficient range of continuous five-time determining results is 0.0031-0.40%. The inter-day variation coefficient range is 1.34%. There is no significant difference when comparing the determining result by national standard method with the result by the method of the invention. The methodis simple and convenient to operate, fast to analyze, and has high accuracy and precision, strong stability and good application prospect.

Description

technical field [0001] The invention belongs to the technical field of physical and chemical inspection of cigarette materials, and in particular relates to a method capable of accurately measuring the calcium carbonate content in cigarette paper. Background technique [0002] Calcium carbonate not only affects the appearance quality of cigarette paper, such as: whiteness, opacity, etc., but also affects the air permeability, flammability, ash-coating performance of cigarettes, etc., and plays an important role in reducing the harm and coke of cigarettes. Therefore, it has been It is an important indicator of cigarette paper quality control. Because the products after combustion are not harmful to human health, it has even been the only filler in cigarette paper for many years. In the prior art, there are reports on determination based on potentiometric titration, thermogravimetric mass spectrometry, and the like. But these methods all have the problem that operation is co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/33
Inventor 彭丽娟李苓张燕李素华王淑华
Owner YUNNAN TOBACCO QUALITY SUPERVISION MONITORING STATION
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