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Separating and measuring method for chromium elements with different valence states in cigarette mainstream smoke

A technology of mainstream cigarette smoke and measurement method, applied in the field of chemical analysis and detection, can solve problems such as lack of accuracy and reliability

Active Publication Date: 2014-12-24
SHANGHAI TOBACCO GRP CO LTD
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  • Abstract
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Problems solved by technology

[0004] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a method for the separation and determination of chromium elements in different valence states in mainstream smoke of cigarettes, which is used to solve the lack of accurate, reliable and easy-to-operate separation of mainstream chromium elements in cigarettes in the prior art. Problems in the method of analyzing different valence chromium elements in flue gas

Method used

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  • Separating and measuring method for chromium elements with different valence states in cigarette mainstream smoke
  • Separating and measuring method for chromium elements with different valence states in cigarette mainstream smoke
  • Separating and measuring method for chromium elements with different valence states in cigarette mainstream smoke

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Embodiment 1

[0061] 1 Reagents and instruments

[0062] 1.1 Reagents

[0063] Trivalent chromium, hexavalent chromium standard solution (10.0mg / L, National Center for Standard Materials); Scandium 45 (100.0mg / L, U.S. Agilent Technology Co., Ltd.); Methanol (chromatographically pure, German Merck company); Ammonia (analytical pure, German Merck company); 65% nitric acid (excellent grade pure, German Merck company)

[0064] 1.2 Instruments

[0065] RM200A rotary smoking machine (Borgwaldt, Germany); Cambridge filter (diameter 92mm, Borgwaldt, Germany); filter membrane (0.45μm, Shanghai Anpu Technology Co., Ltd.); SW12H ultrasonic cleaner (SONO SWISS, Switzerland); PCX cation Exchange solid-phase extraction column (Angela, USA); Milli-Q ultrapure water instrument (Millipore, USA); 7700X octopole collision / reaction cell-inductively coupled plasma mass spectrometer (Agilent Technology Co., Ltd., USA)

[0066] 2. Measurement method

[0067] 2.1 Sample pretreatment

[0068] Select cigarettes...

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Abstract

The invention provides a separating and measuring method for chromium elements with different valence states in cigarette mainstream smoke. The chromium elements with the different valence states are separated by adopting a PCX cation exchange solid-phase extraction column, and then the contents of the chromium elements with the different valence states in the cigarette mainstream smoke are measured by adopting inductively coupled plasma mass spectrometry, wherein the chromium elements with the different valence states comprise trivalent chromium and hexavalent chromium. The separating and measuring method for the chromium elements with the different valence states in the cigarette mainstream smoke disclosed by the invention is high in reproducibility and recovery rate, is favorable for relevant technical staff in tobacco industry to perform effective and quantitative measurement and control on the content of the chromium elements with the different valence states in the cigarette mainstream smoke, and provides powerful technical support for comprehensive and objective evaluation of the harmfulness of the chromium elements in the cigarette mainstream smoke in the tobacco industry.

Description

technical field [0001] The invention belongs to the technical field of chemical analysis and detection, and in particular relates to a method for separating and measuring chromium elements in different valence states in cigarette mainstream smoke. Background technique [0002] As a heavy metal element, chromium has been widely concerned and studied in recent years because of its great harm to human beings and the environment. Chromium in cigarette smoke is one of the sources of chromium in the environment and one of the harmful components listed in the Hoffmann list in the tobacco industry. The ion valence states of chromium element are divalent, trivalent and hexavalent. Among them, divalent chromium ion is a strong reducing agent with unstable properties and can be quickly oxidized into trivalent chromium. Therefore, divalent chromium rarely exists in the living body. . Trivalent chromium is an essential trace element for the human body, which can assist insulin to maint...

Claims

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Application Information

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IPC IPC(8): G01N27/62G01N1/40G01N1/34G01N27/626
Inventor 陆怡峰姚鹤鸣顾文博谢雯燕李永霞张珲姿张怡春刘鸿周志雄史佳沁
Owner SHANGHAI TOBACCO GRP CO LTD
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