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Determination method for chromium, nickel, arsenic, selenium, cadmium and lead elements in main stream smoke of heated non-combustion type tobacco products

A technology for heating non-combustion type tobacco products, which is applied in the field of chemical analysis and detection, can solve the problems of rarely reported, heating and non-combustion type tobacco products, such as heavy metal content, and achieves a satisfactory recovery rate.

Inactive Publication Date: 2018-02-09
SHANGHAI TOBACCO GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to reports, Monique Williams and others used the ICP-OES method to study the content of 22 elements in the smoke of a certain brand of electronic cigarettes; Tian Yongfeng and others invented a device and method for real-time online analysis of heavy metals in electronic cigarette smoke, but There are few reports on heavy metal content in mainstream smoke of heat-not-burn tobacco products

Method used

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  • Determination method for chromium, nickel, arsenic, selenium, cadmium and lead elements in main stream smoke of heated non-combustion type tobacco products
  • Determination method for chromium, nickel, arsenic, selenium, cadmium and lead elements in main stream smoke of heated non-combustion type tobacco products
  • Determination method for chromium, nickel, arsenic, selenium, cadmium and lead elements in main stream smoke of heated non-combustion type tobacco products

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] 1.1 Sample pretreatment

[0050] a. Trapping smoke: the heat-not-burn tobacco products are smoked under the condition that the temperature and relative humidity of the experimental test environment are respectively (22.0±2.0)°C and (60.0±5.0)%. Manually ignite, set the suction volume to (35.0±0.3) mL, and carry out a bell-shaped puffing curve. Take 15 puffs for each tobacco product to ensure that the entire tobacco product is sucked. The puffing time for each puff is 3 seconds. Each electrostatic collection tube collects the total particulate matter in the mainstream smoke of 5 identical heat-not-burn tobacco products, and the weight of each heat-not-burn tobacco product is 0.45g.

[0051] b. Solvent extraction: After the suction is completed, use 5ml of ethanol to extract the particulate matter in the mainstream smoke in the electrostatic collection tube, and then use 1% (v / v) nitric acid to clean the electrostatic collection tube several times.

[0052] c. Transfer t...

Embodiment 2

[0070] Results and discussion

[0071] 1. Standard working curve, detection limit and quantification limit

[0072]According to 1.2 in Example 1, a series of mixed element working standard solutions of chromium, nickel, arsenic, selenium, cadmium and lead with different concentrations were prepared, and the specific concentration ranges are shown in Table 1. Simultaneously, prepare germanium by 1.2 in embodiment 1 72 ,indium 115 ,bismuth 209 Mixed element internal standard solution.

[0073] A series of working standard solutions with different concentrations prepared above and the internal standard standard solution are respectively according to the provisions of 1.3 in Example 1, and ORS-ICP-MS detection is carried out synchronously, and the mass-to-charge ratio strength of the corresponding element / corresponding internal standard element Ratio is the ordinate (Y axis), and the mass concentration ratio of its corresponding corresponding element / corresponding internal sta...

Embodiment 3

[0083] Using the detection conditions of Example 1 in the method of the present invention, the contents of chromium, nickel, arsenic, selenium, cadmium, and lead elements in the mainstream smoke of two different heat-not-burn tobacco products are measured, specifically see Table 5 . It can be seen from Table 5 that for heat-not-burn tobacco products, this method can effectively determine the contents of chromium, nickel, arsenic, selenium, cadmium, and lead elements. The method is simple to operate, has good applicability, and the results are accurate and reliable.

[0084] Table 5 actual sample detection results (unit: ng / cig)

[0085]

[0086] In summary, the present invention adopts the electrostatic trapping device of the smoking machine to capture the mainstream smoke of non-burning tobacco products, and then uses ethanol and nitric acid aqueous solution to extract the chromium, nickel and arsenic in the mainstream smoke of non-burning tobacco products. , selenium, ca...

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Abstract

The invention provides a determination method for chromium, nickel, arsenic, selenium, cadmium and lead elements in main stream smoke of heated non-combustion type tobacco products. The method comprises the following steps: performing suction on a tobacco product by adopting an extractor hood, gathering the main stream smoke of the tobacco product by adopting an electrostatic gathering device, extracting main stream smoke particulate matter in the electrostatic gathering device with alcohol, and cleaning the electrostatic gathering device with nitric acid aqueous solution, so as to obtain sample solution; then performing inductive coupling inductively coupled plasma mass spectrometry detection. According to the method, the main stream smoke in the heated non-combustion type tobacco productare gathered by adopting the extractor hood and the electrostatic gathering device, the chromium, nickel, arsenic, selenium, cadmium and lead elements in main stream smoke of heated non-combustion type tobacco product are extracted with alcohol and nitric acid aqueous solution, and determination is performed through the inductive coupling inductively coupled plasma mass spectrometry; the method is very excellent in repeatability and recovery rate.

Description

technical field [0001] The invention relates to the technical field of chemical analysis and detection, in particular to a method for determining chromium, nickel, arsenic, selenium, cadmium and lead elements in mainstream smoke of heat-not-burn tobacco products. Background technique [0002] Chromium, nickel, arsenic, selenium, cadmium, and lead are common heavy metal elements that have received extensive attention and research in recent years because of their greater harm to humans and the environment. Chromium, nickel, arsenic, selenium, cadmium, and lead in tobacco are all harmful components in the Hoffmann list. Heat-not-burn tobacco products (also known as low-temperature cigarettes) are a new type of tobacco products that heat and smoke cut tobacco through a special heating source. It is mainly composed of tobacco raw materials, acidity regulators, leavening agents, humectants, stabilizers / Coagulant, thickener and natural essence are mixed; the heating source is di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/64G01N1/44
CPCG01N27/64G01N1/44
Inventor 陆怡峰姚鹤鸣顾文博张怡春李永霞张珲姿
Owner SHANGHAI TOBACCO GRP CO LTD
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