Summary of the invention
The objective of the invention is at the prior art situation, specialized designs a kind of simple and convenient, assay method of the solid-state additives of filter tip of cigarette rate of transform in main flume accurately and reliably.
The object of the present invention is achieved like this: the assay method of the solid-state additives of filter tip of a kind of cigarette rate of transform in main flume, this method is chosen a certain component in the cigarette filter-tip additive agent of solid granular or solid powdery as object element, this object element should be content in the cigarette smoke lower, simultaneously can be by the element that inductively coupled plasma mass spectrometry detected, object element is mainly: Mg, Al, Mn, Fe, Co, Ni, Zn or Pd; Utilize the granule phase substance matter in the static drip catcher collection main flume, adopt inductively coupled plasma mass spectrometry to measure the content of object element in the collected granule phase substance matter then, thereby realize detection by quantitative, judge that according to this solid-state additives of filter tip of cigarette overflows with air-flow and suck possibility into human body the solid-state additives of filter tip of cigarette rate of transform in main flume;
Concrete steps are as follows:
1) cigarette props up preparation:
Used cigarette sample adds the cigarette Zhi Zuowei lab rolls cigarette sample of 1-60mg/cig solid additives through weight and resistance to suction sorting in filter tip, the cigarette that does not add solid additives in the filter tip props up and is the contrast cigarette sample;
2) granule phase substance matter is collected in the flue gas:
Cigarette props up by the GB/T19609-2004 standard and utilizes the static drip catcher to collect granule phase substance matter in the main flume after smoking machine burns and sucks, and static drip catcher operating voltage is 10-25kV;
3) sample pretreatment:
The granule phase substance matter of collecting in the static drip catcher with 20~80mL methanol solution wash-out, is transferred to eluent in the counteracting tank; Counteracting tank is placed 80~120 ℃ of heating down, make solvent evaporates to 1~2mL; Add 3~5mL 65%HNO3, react 20~40min down at 90 ℃; Add 1~3mL 65%HNO3,1~2mL30%H2O2,0.2mL 40%HF, clear up by the program of setting of clearing up, clearing up program is that room temperature is warming up to 110 ℃ through 5min, insulation 5min, be warming up to 160 ℃ through 5min then, insulation 5min is warming up to 190 ℃ through 10min then, insulation 25min; Clear up after the end sample transfer to the 50mL volumetric flask, add 2mL 2% boric acid,, be settled to 50mL with ultrapure water then, promptly obtain testing sample solution at 85~100 ℃ of insulation 5~15min down; Simultaneously, adopt above-mentioned same fully method that the cigarette Zhi Jinhang that does not add adjuvant in the filter tip is handled, preparation contrast cigarette sample solution;
4) drafting of typical curve:
The series standard solution of preparation object element detects each standard solution, and draws the typical curve of this object element according to testing result with inductively coupled plasma mass spectrometry;
5) object element detects:
Testing sample solution and control sample solution are detected with inductively coupled plasma mass spectrometry successively, according to the concentration of object element in the typical curve calculation sample of object element;
6) rate of transform is calculated: be calculated as follows the rate of transform of the solid-state additives of filter tip of cigarette in main flume:
Wherein: TP%: the rate of transform of the solid-state additives of filter tip of cigarette in main flume, percentage by weight;
C
1: the object element detectable concentration of contrast cigarette sample, mg/L;
C
2: the object element detectable concentration of experiment cigarette sample, mg/L;
N: suction cigarette number;
M: the solid additives weight that adds in every cigarette, mg;
C
M: the content of object element in the solid-state additives of filter tip, percentage by weight.
The present invention be directed to the situation of above-mentioned prior art, and it is at present domestic as yet not to the report of the solid-state additives of filter tip of cigarette rate of transform in main flume, specialized designs the assay method of the solid-state additives of filter tip of a kind of cigarette rate of transform in main flume, this method passes through to select the component of the suitable solid-state additives of filter tip of cigarette as object element, utilize the granule phase substance matter in the static drip catcher collection cigarette mainstream flue gas, by the quantitative measurement of inductivity coupled plasma mass spectrometry (ICP-MS) method realization to the rate of transform of the solid-state additives of filter tip of cigarette in main flume.
The present invention chooses a certain component in the cigarette filter-tip additive agent of solid granular or solid powdery as object element, this object element should be the element lower, that can be detected by the ICP-MS method simultaneously of content in the cigarette smoke, and object element mainly comprises Mg, Al, Mn, Fe, Co, Ni, Zn, Pd.Utilize the granule phase substance matter in the static drip catcher collection main flume, adopt the ICP-MS method to measure the content of object element in the collected granule phase substance matter then, thereby realize detection by quantitative, judge that according to this solid-state additives of filter tip of cigarette overflows with air-flow and suck possibility into human body the solid-state additives of filter tip of cigarette rate of transform in main flume.
The invention has the beneficial effects as follows: utilize the granule phase substance matter in the static drip catcher collection main flume, reduce the pollution of object element in the flue gas granule phase substance matter collection process as far as possible and disturb; Select content in the cigarette smoke lower, simultaneously can be by the component of inductivity coupled plasma mass spectrometry (ICP-MS) the solid-state additives of filter tip of cigarette that method detected as object element, can the rate of transform of the solid-state additives of filter tip of quantitative response cigarette in main flume; Analytical approach accurately and reliably, simple and convenient, can judge according to this that the solid-state additives of filter tip of cigarette overflows with air-flow and suck possibility into human body, result of study has important guiding value to the exploitation of the solid-state additives of filter tip of cigarette.
Embodiment
Below the invention will be further described, but following examples are illustrative, are not determinate, can not limit protection scope of the present invention with this.
Embodiment:
Select Si-Al molecular sieve certain trade mark cigarette as cigarette filter-tip additive agent, wherein the content of aluminium element in the Si-Al molecular sieve sample is 3.76%, and present embodiment selects Al as object element.
1. cigarette props up preparation: used cigarette sample adds the cigarette Zhi Zuowei lab rolls cigarette sample of 5mg/cig solid additives through weight and resistance to suction sorting in filter tip, and the cigarette that does not add solid additives in the filter tip props up and is the contrast cigarette sample.
2. granule phase substance matter is collected in the flue gas: cigarette props up by the GB/T19609-2004 standard and utilizes the static drip catcher to collect granule phase substance matter in the main flume after smoking machine burns and sucks, and static drip catcher operating voltage is 17kV.
3. sample pretreatment:, eluent is transferred in the counteracting tank with the granule phase substance matter of collecting in static drip catcher 40mL methanol solution wash-out; Counteracting tank is placed 90 ℃ of heating down, make solvent evaporates to 1mL; Add 4mL 65%HNO
3, react 30min down at 90 ℃; Add 2mL 65%HNO
3, 1.5mL 30%H
2O
2, 0.2mL 40%HF, clear up by the program of setting of clearing up, clearing up program is that room temperature is warming up to 110 ℃ through 5min, insulation 5min is warming up to 160 ℃ through 5min then, insulation 5min is warming up to 190 ℃ through 10min then, insulation 25min; Clear up after the end sample transfer to the 50mL volumetric flask, add 2mL 2% boric acid,, be settled to 50mL with ultrapure water then, be mixed with testing sample solution at 95 ℃ of insulation 10min down; Preparation control sample solution uses the same method.
4. standard solution configuration: precision is measured 0.1mL, 0.3mL, 0.5mL, 0.7mL, and the 10mg/L aluminum standard solution places the 50mL volumetric flask that has been added with 2mL 2% boric acid respectively, uses 5%HNO then
3Constant volume shakes up to 50mL, makes concentration and is respectively 0.02mg/L, 0.06mg/L, 0.10mg/L, 0.14mg/L standard solution.
5. object element detects: each concentration standard solution and testing sample solution are detected with ICP-MS successively, according to the concentration of object element in the typical curve calculation sample solution of object element.
Testing result is as shown in the table:
6. the rate of transform is calculated: be calculated as follows the rate of transform of the solid-state additives of filter tip of cigarette in main flume:
Wherein: TP%: the rate of transform of the solid-state additives of filter tip of cigarette in main flume, percentage by weight;
C
1: the object element detectable concentration of contrast cigarette sample, mg/L;
C
2: the object element detectable concentration of experiment cigarette sample, mg/L;
N: suction cigarette number;
M: the solid additives weight that adds in every cigarette, mg;
C
M: the content of object element in the solid-state additives of filter tip, percentage by weight.