A method for detecting mercury content in mainstream cigarette smoke
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A technology for cigarette mainstream smoke and element content, applied in the field of chemical analysis and detection, can solve the problems of lack of accuracy and reliability
Active Publication Date: 2018-07-20
SHANGHAI TOBACCO GRP CO LTD
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[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a method for detecting the content of mercury in cigarette mainstream smoke, which is used to solve the lack of accurate, reliable, direct and convenient way to capture cigarettes in the prior art. The gas phase composition mercury and total mercury element in the mainstream smoke and the problem of the method of analyzing its content
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Embodiment 1
[0098] 1. Measurement method
[0099] 1.1 Preparation of capture solution
[0100] Add a certain amount of 65% concentrated nitric acid, 35% concentrated hydrochloric acid, and 10.0 mg / L gold standard solution into absolute ethanol to prepare a solution containing 1-5% nitric acid, 1-3% hydrochloric acid and a gold concentration of 0.1-1.0 mg / L acidified ethanol solution, preferably prepared as an acidified ethanol solution containing 3% nitric acid, 2% hydrochloric acid and 1.0 mg / L gold concentration, stored at 0°C-4°C for 1 month.
[0101] 1.2 Preparation of standard solution
[0102] Pipette the elemental mercury, dilute it with the acidified ethanol solution containing gold prepared in 1.1 and make it to volume, and prepare the standard stock solution of elemental mercury. The mass concentration of the mercury element standard stock solution is 100.0 μg / L. Storage conditions: It can be stored for 1 month at 0-4°C.
[0103] Pipette bismuth 209 Dilute the standard subs...
Embodiment 2
[0146] 1. Measurement method
[0147] 1.1 Preparation of capture solution
[0148] With the related content of 1.1 in embodiment 1.
[0149] 1.2 Preparation of standard solution
[0150] With the related content of 1.2 in embodiment 1.
[0151] 1.3 Sample capture
[0152] Select cigarettes according to the national standard GB / T5606.1-2004 "Cigarette Part 1: Sampling", and use RM- The 20H rotating disk smoking machine was used for balance and smoking, and the acidified ethanol solution containing gold elements prepared in 1.1 was used to capture the mercury sample solution in the gas phase component of mainstream cigarette smoke. The sample capture amount is the gas phase composition of 20 cigarettes each time.
[0153] The acidified ethanol solution containing gold elements prepared in 1.1 was used to capture the mercury in the gas phase component of cigarette mainstream smoke, and two traps were connected in series, each trap was 50ml and filled with a certain amount of...
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Abstract
The invention provides a method for detecting mercury element content in mainstream smoke of cigarettes, which adopts an electrostatic capture method to capture mercury in the total particulate matter in mainstream smoke of cigarettes, and simultaneously uses an acidified ethanol solution containing gold elements to capture mainstream smoke of cigarettes The gas phase composition of mercury in the gas was determined, and the content of mercury element in mainstream cigarette smoke was determined by inductively coupled plasma mass spectrometry. The invention also provides a method for detecting the content of mercury element in gas phase components in cigarette mainstream smoke and its application. The method for detecting mercury element content in cigarette mainstream smoke of the present invention has good reproducibility and recovery rate, and is beneficial for relevant technical personnel in the tobacco industry to effectively quantitatively measure and control the content of mercury element in cigarette mainstream smoke, and Provide strong technical support for the tobacco industry to comprehensively and objectively evaluate the harmfulness of mercury in mainstream cigarette smoke.
Description
technical field [0001] The invention belongs to the technical field of chemical analysis and detection, and in particular relates to a method for detecting mercury element content in mainstream smoke of cigarettes. Background technique [0002] Mercury is a heavy metal element, which has been widely concerned and studied in recent years because of its great harm to human body and environment. Mercury in cigarette smoke is one of the sources of mercury in the environment, and it is also one of the harmful components in the Hoffmann list in the tobacco industry, which includes total particle phase components and gas phase components. When smoking cigarettes, mercury will be inhaled into the bronchi, which will cause serious harm to the nervous system, respiratory tract, kidneys and other organs of the human body. Therefore, in order to evaluate the harmfulness of mercury in cigarette smoke more comprehensively and objectively, we need to conduct in-depth research on the deter...
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