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Method for testing content of chromium, nickel, arsenic, selenium, cadmium and lead elements in mainstream flue gas of electronic cigarette

A mainstream flue gas and element content technology, applied in the field of chemical analysis and detection, can solve the problems of coexisting ion interference, short electrode service life, lack of stability and selectivity of the method, etc.

Inactive Publication Date: 2018-02-16
SHANGHAI TOBACCO GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Tian Yongfeng and others invented a device and method for real-time online analysis of heavy metals in e-cigarette smoke, but the method lacks stability and selectivity, and has shortcomings such as coexisting ion interference and short service life of electrodes.

Method used

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  • Method for testing content of chromium, nickel, arsenic, selenium, cadmium and lead elements in mainstream flue gas of electronic cigarette

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] 1. Sample pretreatment

[0059] First, the e-cigarette liquid is sucked by a smoking machine under the condition of ambient temperature of (22±2)℃ and relative humidity of (60±5)%, set the smoking time to 3-5s, and the smoking curve It is a rectangular curve, the suction capacity is (55.0±0.4) mL, and each electronic cigarette takes 9-11 puffs. Then, the electrostatic capture method is used to capture the particulate matter of the mainstream smoke of the electronic cigarette. The electrostatic capture method is to collect the electrostatic capture tube specially used to capture the particulate matter of the smoke on the electrostatic capture device. The electrostatic collection tube collects the particulate matter in the mainstream smoke of 4-6 electronic cigarettes, and the voltage applied to the electrostatic collection tube is 20-30KV. After the e-cigarette is sucked and captured, the electrostatic collection tube can be cleaned several times with 0.5-1.5% (v / v) nit...

Embodiment 2

[0072] 1. Sample pretreatment

[0073] First, the e-cigarette liquid is sucked by a smoking machine under the condition of an ambient temperature of 22°C and a relative humidity of 60%. The suction time is set to 4s, the suction curve is a rectangular curve, and the suction volume is 55.0mL , 10 puffs per e-cigarette. Then, the electrostatic capture method is used to capture the particulate matter of the mainstream smoke of the electronic cigarette. The electrostatic capture method is to collect the electrostatic capture tube specially used to capture the particulate matter of the smoke on the electrostatic capture device. The electrostatic collection tube collects the particulate matter in the mainstream smoke of 5 electronic cigarettes, and the voltage applied to the electrostatic collection tube is 24KV. After the e-cigarette is sucked and captured, clean the electrostatic collection tube with 1.0% (v / v) nitric acid aqueous solution several times. Before cleaning the elect...

Embodiment 3

[0088] Pipette different volumes of mixed standard stock solutions, dilute with 1.0% (v / v) nitric acid aqueous solution and prepare to volume as a series of mixed standard solutions with different concentrations. The specific concentrations are shown in Table 2 in Example 2.

[0089] A series of mixed standard solutions with different concentrations prepared above and the internal standard solution are respectively subjected to ICP-MS detection synchronously to measure the mass-to-charge ratio intensity ratio of various elements in the mixed standard solution / various internal standard elements in the internal standard solution. is the ordinate (Y axis), and the mass concentration ratio of various measurement elements in the corresponding mixed standard solution / internal standard elements in the internal standard solution is the abscissa (X axis). Regression analysis is carried out to obtain the regression equation and its correlation Coefficients, as shown in Table 3. See Tabl...

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Abstract

The invention provides a method for testing the content of chromium, nickel, arsenic, selenium, cadmium, and lead elements in mainstream flue gas of an electronic cigarette. The method comprises: capturing particulate matters from mainstream flue gas of an electronic cigarette through a static capturing manner, extracting chromium, nickel, arsenic, selenium, cadmium and lead elements from the mainstream flue gas of the electronic cigarette with a solvent, taking an inductively-coupled plasma mass spectrometer as a testing device, and adopting an internal standard method to perform synchronousmeasurement of the content of chromium, nickel, arsenic, selenium, cadmium and lead elements in the mainstream flue gas of the electronic cigarette. The provided method is satisfactory in reproducibility and recovery rate, can be used for efficiently performing quantitative determination and control to chromium, nickel, arsenic, selenium, cadmium and lead elements in the mainstream flue gas of theelectronic cigarette by related technical staff in the tobacco industry, and provides powerful technical support for quality and safety evaluation of electronic cigarette products in the tobacco industry.

Description

technical field [0001] The invention belongs to the technical field of chemical analysis and detection, and relates to a method for determining the contents of chromium, nickel, arsenic, selenium, cadmium and lead elements in mainstream smoke of electronic cigarettes. Background technique [0002] Chromium, nickel, arsenic, selenium, cadmium and lead are the main harmful components in the Hoffmann list. In recent years, due to their greater harm to humans and the environment, they have received extensive attention and research. E-cigarette is an electronic device that transmits nicotine to the respiratory system by means of electronic heating. It is mainly composed of batteries, atomizers, cartridges and other components. When smoking e-cigarettes, the e-liquid containing nicotine in the e-cigarette pod is atomized, and enters the lungs of the human body through the mouth of the human body with the airflow, so that consumers can obtain the satisfaction similar to smoking tra...

Claims

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Application Information

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IPC IPC(8): G01N27/62
CPCG01N27/62
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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