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A method for the separation and determination of chromium elements in different valence states in mainstream cigarette 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: 2017-01-04
SHANGHAI TOBACCO GRP CO LTD
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  • Abstract
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  • Application Information

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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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  • A method for the separation and determination of chromium elements in different valence states in mainstream cigarette smoke
  • A method for the separation and determination of chromium elements in different valence states in mainstream cigarette smoke
  • A method for the separation and determination of chromium elements in different valence states in mainstream cigarette 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 method for separation and determination of chromium elements in different valence states in mainstream smoke of cigarettes. PCX cation exchange solid phase extraction column is used for separation, and then inductively coupled plasma mass spectrometry is used to measure the chromium elements in different valence states of mainstream smoke of cigarettes. content. Among them, the chromium elements in different valence states are trivalent chromium and hexavalent chromium. The method for separating and measuring chromium elements in different valence states in mainstream smoke of cigarettes according to the present invention has good reproducibility and recovery rate, and is beneficial for relevant technicians in the tobacco industry to effectively determine the content of chromium elements in different valence states in mainstream smoke of cigarettes. It provides strong technical support for the tobacco industry to comprehensively and objectively evaluate the harmfulness of chromium 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 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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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/62G01N1/40G01N1/34
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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