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Analytical method, kit and application of perchlorate in tobacco sheet

A technology of tobacco sheet and perchlorate, applied to the analysis of perchlorate in tobacco sheet, a kit, and the application field of the kit in analyzing or detecting perchlorate in tobacco sheet, can solve the problem of inability to eliminate, accurate Low, there is no effective analysis of tobacco sheet and other issues

Active Publication Date: 2020-07-24
CHINA TOBACCO FUJIAN IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Tobacco flakes were analyzed by common perchlorate analysis methods in drinking water and dairy products, and it was found that when perchlorate in tobacco flakes was detected by spectrophotometry and electrode method, the impurity interference was serious and the accuracy was low ; When detected by ion chromatography, the pretreatment of the sample is very complicated, and the interference of chloride and sulfate in the sample is serious, which cannot be eliminated
Therefore, there is no effective method for the analysis of perchlorate in tobacco flakes

Method used

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  • Analytical method, kit and application of perchlorate in tobacco sheet
  • Analytical method, kit and application of perchlorate in tobacco sheet
  • Analytical method, kit and application of perchlorate in tobacco sheet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0080] 1. Materials

[0081] Tobacco flakes: purchased from Jinmin Reconstituted Tobacco Leaf Co., Ltd.

[0082] Filter membrane: purchased from Hippos Technology Co., Ltd., with a pore size of 0.22 μm.

[0083] Sodium perchlorate standard: purchased from Sinopharm Holdings Co., Ltd.

[0084] 50mM ammonia solution: purchased from Sinopharm Holdings Co., Ltd.

[0085] 2. Detection method

[0086] (1) Preparation of extract:

[0087] Take 0.5g of tobacco flakes (accurate to 0.000lg) as a sample, put it into a 250mL ground-mouth Erlenmeyer flask, add 50.0mL of ultrapure water, cover the bottle stopper, extract under ultrasonic conditions for 30 minutes, the extraction temperature is controlled at room temperature, and collect liquid. The liquid was filtered through qualitative filter paper and the first 5 ml of filtrate was discarded, and the subsequent filtrate was collected. The subsequent filtrate is filtered through a filter membrane with a pore size of 0.22 μm, and the...

Embodiment 2

[0122] Referring to the method of Example 1, the tobacco sheet samples of Example 1 were repeatedly tested, 6 times a day, repeated for 3 days, and a total of 18 parallel measurements were performed. The results are shown in Table 1.

[0123] Table 1

[0124]

[0125] As can be seen from Table 1, the intraday relative standard deviation and the interday relative standard deviation of perchlorate in the tobacco sheet sample analyzed by the method of the present invention are all less than 5%, indicating that the analytical method of the present invention has good repeatability.

Embodiment 3

[0127] Add the sodium perchlorate standard substance (manufacturer and model are the same as embodiment 1) of three concentration levels respectively by mass in the same embodiment 1 tobacco sheet samples of many parts of quality, mix, measure the standard addition with reference to the method of embodiment 1 The perchlorate content of the sample. Each concentration level was measured in parallel three times. The recovery rate was calculated and the results are shown in Table 2.

[0128] Table 2

[0129]

[0130] As can be seen from Table 2, the recovery rate of perchlorate by the analytical method of the present invention is between 93.8% and 97.1%, which meets the requirements of chemical detection.

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Abstract

The invention belongs to the technical field of tobacco detection, and relates to a method for analyzing perchlorate in tobacco sheets. The method comprises the following steps: (1) extracting tobacco sheet samples by using water to obtain extracting liquid; (2) detecting the extracting liquid by liquid chromatography tandem mass spectrometry; and (3) performing qualitative analysis and / or quantitative analysis on the perchlorate in the tobacco sheet samples according to a detection result, wherein in the step (3), qualitative analysis is conducted by calculating an abundance ratio of two ion pairs, namely 98.9 / 82.8 (m / z) and 100.9 / 84.8 (m / z), in the detection result. The invention also relates to a kit and application thereof to analysis or detection of the perchlorate in the tobacco sheets. By the method provided by the invention, the nature of the perchlorate in the tobacco sheets can be determined effectively, and the perchlorate content can be measured accurately.

Description

technical field [0001] The invention belongs to the technical field of tobacco detection, and in particular relates to a method for analyzing perchlorate in tobacco flakes, and also relates to a kit and the application of the kit in analyzing or detecting perchlorate in tobacco flakes. Background technique [0002] At present, perchlorate as a raw material can be used in many products such as solid propellants, aerospace equipment, munitions, fireworks, blasting agents, textile fixatives, electroplating products, rubber products, dyes, coatings, smelting workpieces, airbags and magnesium batteries. , with a wide range of applications. Since perchlorate is easily soluble in water, perchlorate is easily dissolved in water during product processing or use, such as dissolved in groundwater, surface water and drinking water; and perchlorate in water is also It is easy to further enrich in animals and plants. [0003] The chemical structure of perchlorate is relatively stable an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N30/02
CPCG01N30/02
Inventor 邓其馨刘泽春吴清辉黄华发谢卫黄朝章张建平
Owner CHINA TOBACCO FUJIAN IND
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