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Method for separating and determining chromium elements with different valences in tobacco and tobacco products

A technology for tobacco products and a determination method is applied to the separation and determination method of different valence chromium elements in tobacco and tobacco products and the field of preparation thereof, and achieves the effects of good separation effect, low detection limit and simplified separation and measurement process.

Inactive Publication Date: 2015-08-12
SHANGHAI TOBACCO GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, in related reports, there is no research on the analysis method of different valence states of chromium in tobacco established by using HPLC-ICP-MS technology

Method used

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  • Method for separating and determining chromium elements with different valences in tobacco and tobacco products
  • Method for separating and determining chromium elements with different valences in tobacco and tobacco products
  • Method for separating and determining chromium elements with different valences in tobacco and tobacco products

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Embodiment 1

[0054] (1) select instrument and equipment: the 1260-7700x type high performance liquid chromatography-inductively coupled plasma mass spectrometry instrument produced by U.S. Agilent Company, wherein said high performance liquid chromatography-inductively coupled plasma mass spectrometry instrument is equipped with chromatographic Column guard column (HM79448, Agilent Technology Co., Ltd., USA) and anion exchange chromatography column (Hamilton PRP X-100, 250mm×4.1mm×10μm); electronic balance (XS204, accuracy 0.0001g, Swiss Mettler company); pH meter ( s220k, Mettler, Switzerland); ultrapure water instrument (Elix3, Millipore, USA); ultrasonic cleaner (KQ-A1500DE, Kunshan Ultrasonic Instrument Co., Ltd.); heavy metal grinding machine (ZM200, Retsch, Germany); constant temperature and humidity Box (Climacell707L, MMM Company, Germany); high-speed centrifuge (Z300, HermLe Company, Germany); 0.45 μm aqueous needle filter (polyethersulfone, Shanghai Anpu Scientific Instrument Co.,...

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Abstract

The invention discloses a method for separating and determining chromium elements with different valences in tobacco and tobacco products. The method comprises the following steps of 1, selecting apparatuses and equipment, wherein the separation and determination device is a high performance liquid chromatography-inductively coupled plasma-mass spectrometry (HPLC-ICP-MS) combined device, 2, preparing a reagent and a standard solution, 3, pretreating a sample, 4, determining the sample and calculating and expressing a calculation result. The method utilizes the HPLC-ICP-MS combined technology to realize separation and determination of chromium elements with different valences in tobacco and tobacco products, has good effects of analysis, determination and separation of chromium elements with different valences, a low detecting limit, high sensitivity and good repeatability, can detect chromium elements with different valences in a sub-concentration (microgram / liter) level, and in other word, can detect content of Cr(III) and Cr(VI) in tobacco and tobacco products. The method for separation and determination optimizes a sample pre-treatment process and simplifies separation and determination processes.

Description

technical field [0001] The invention belongs to the technical field of separation and determination methods for heavy metal elements in different valence states, and in particular relates to a method for separation and determination of chromium elements in different valence states in tobacco and tobacco products and a preparation method thereof. Background technique [0002] Chromium is widely distributed in nature and can form a variety of valence compounds from -2 to +6, the most common being Cr(Ⅲ) and Cr(Ⅵ). Among them, Cr(Ⅲ) is an essential element for the human body to maintain life, which can promote the utilization of glucose in the human body; while Cr(Ⅵ) is thermodynamically stable and has strong fluidity in the body. 4 2- and Cr 2 o 7 2- The valence state of Cr(Ⅲ) passes through the negatively charged cell membrane and promotes oxidation, which leads to pathological changes. Its toxicity is generally 100-1000 times that of Cr(Ⅲ). Different valence states of ch...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/88
Inventor 李登科张春涛陆怡峰邢立霞马立超李莉霞
Owner SHANGHAI TOBACCO GRP CO LTD
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