Sample pretreatment method in occurrence form detection analysis on chromium in tipping paper for cigarette

A technology for sample pretreatment and cigarette tipping paper, which can be used in analytical materials, measuring devices, material separation, etc., to solve problems such as long chromatographic separation cycles and achieve high extraction rates.

Active Publication Date: 2013-05-22
CHINA TOBACCO GUANGDONG IND
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Problems solved by technology

These existing methods generally require longer chromatographic sepa

Method used

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  • Sample pretreatment method in occurrence form detection analysis on chromium in tipping paper for cigarette
  • Sample pretreatment method in occurrence form detection analysis on chromium in tipping paper for cigarette

Examples

Experimental program
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Effect test

Embodiment 1

[0050] Instruments and reagents:

[0051] Inductively coupled plasma mass spectrometer (X series II, Thermo Fisher Corp., Franklin, MA, USA) with collision reaction cell. High performance liquid chromatography (Model 626, Waters, Milford, MA, USA) equipped with a rotary injection six-port valve. Chromatographic separation was performed using a Dionex anion guard column (Ion PacAG11, 50 mm × 4 mm, Dionex, USA) with a PEEK tube (50 cm, 0.18 mm i.d.) and a glass concentric mist of an inductively coupled plasma mass spectrometer. Converter is directly connected.

[0052] In sample processing, an ultrasonic instrument (KQ-28, Kunshan Ultrasonic Instrument Co., Ltd.) was used for auxiliary extraction / extraction and a centrifuge (TDL-40B, Shanghai Anting Scientific Instrument Factory) was used for solid-liquid separation. The pH was measured using a PHS-3C acidity meter (Lei Magnetic Analytical Instrument Factory). The PFA low-pressure closed digestion jacket was purchased from Sa...

Embodiment 2

[0072] Embodiment 2 actual sample analysis

[0073] Based on the organic chromium separation analysis and total chromium method described in Example 1, several tipping paper products on the market were randomly collected and detected, and the detection method is as follows:

[0074] S1. Shred each tipping paper with porcelain scissors (shred to 2 , accurate to 0.1mg), weigh 2 parts of each tipping paper sample, each 0.2g, and place them in 15 mL PP centrifuge tubes; record the labels of all centrifuge tubes;

[0075] S2. Two samples of each type of tipping paper were taken, and 5 mL of 200 mM NaOH was added to one of the samples and subjected to routine ultrasonication for 1 hour to deeply disintegrate the fibers into flocs. Acetic acid was added to keep the final solution at a certain acidity (pH 3 Airtight digestion was carried out for 1 h, and after the digestion was completed, the solution was transferred to a 25 mL volumetric flask as sample solution B for the determinati...

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Abstract

The invention relates to the technical field of cigarette product detection, and provides a sample pretreatment method in occurrence form detection analysis on chromium in tipping paper for cigarette. According to the sample pretreatment method, by summarizing a targeted solving technical scheme of a sample pretreatment technique scheme of the tipping paper for cigarette, a rapid form analyzing method and a pretreatment method of HPLC-ICP-MS (High Performance Liquid Chromatography-Inductively Coupled Plasma-Mass Spectrometry) are established aiming at inorganic trivalent chromium (Cr3+) and hexavalent chromium (Cr6+); aiming at the organic chromium, organic solvent extraction is established; and the rapid and simple sample pretreatment method of the organic chromium is carried out based on low pressure sealed decomposition of a PFA (Polyfluoroalkoxy) self-sealed tank, so that the organic/inorganic chromium can be completely decomposed, and the ultrasonic auxiliary rapid extraction on the organic chromium is realized by using ethyl acetate as the extracting agent. By utilizing the method, the occurrence form and content level of the chromium in the tripping paper can be clearly analyzed and detected, and whether the chromium in the tipping paper can enter human body through spittle contact or not can be accurately judged.

Description

technical field [0001] The present invention relates to the technical field of cigarette product detection, more specifically, to a kind of chromium in tipping paper for cigarettes [0002] Sample pretreatment methods in the analysis of species detection. Background technique [0003] Due to the bioaccumulative toxicity of heavy metals, the monitoring of heavy metal elements in products that affect human health risks and the research on related analytical methods have always attracted attention, especially for products that can be directly ingested through the oral cavity or in close contact with the oral cavity , the limit of heavy metals is particularly strict. In the traditional sense, the risk assessment of heavy metal toxicity usually takes its total content as the main indicator. However, in recent years, with the in-depth research on the biological toxicity of metal forms, studies have shown that the occurrence forms of heavy metals and their bioavailability are in...

Claims

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Application Information

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IPC IPC(8): G01N30/06
Inventor 胡静李峰韩冰施文庄
Owner CHINA TOBACCO GUANGDONG IND
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