Method for detecting chromium, nickel, arsenic, selenium, cadmium and lead elements in cigarette ashes
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A measurement method and soot technology, applied in the direction of measuring devices, preparation of test samples, material analysis by electromagnetic means, etc., can solve the problems of high analysis cost and small matrix effect of neutron activation analysis
Active Publication Date: 2014-07-30
CHINA NAT TOBACCO QUALITY SUPERVISION & TEST CENT
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Neutron activation analysis has the advantages of small matrix effect, high sensitivity, good accuracy, multi-element and non-destructive analysis, and is suitable for the analysis of various samples such as liquid and solid, but it needs to use complex large-scale facilities (such as nuclear reactors) , the analysis cost is high, and it is not a very common analysis method
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example 1
[0078] 1. Reagents and instruments:
[0079] Cr, Ni, As, Se, Cd, Pb mixed standard solution (10mg / L, Agilent, USA); In, Bi mixed internal standard solution (1mg / L, Agilent, USA); Ce, Co, Li, Tl, Y Tuning solution (10μg / L, Agilent, USA); Methanol (excellent grade, Merck, Germany); HNO 3 (excellent grade pure, 65%, mass fraction, German Merck Company); HCL (excellent grade pure, 37%, mass fraction, German Merck Company); H 2 o 2 (excellent grade pure, 30%, mass fraction, Merck Company of Germany); ultrapure water (resistivity ≥ 18.2 MΩ·cm).
[0080] RM 20H turntable smoking machine (Borgwaldt-KC, Germany); Agilent 7500a inductively coupled plasma mass spectrometer (ICP-MS, Agilent, USA); CEM Mars6 microwave digestion instrument (CEM, USA); Milli-Q50 ultrapure water instrument ( American Millipore Company); temperature-controlled electric heater (BHW-09C, Shanghai Broadcom Company), dust-proof exhaust hood; PET volumetric flask 50mL, PET volumetric flask 250mL, PET volumetric...
example 2
[0088] The specific steps are as described in Example 1. The contents of chromium, nickel, arsenic, selenium, cadmium, and lead in the cigarette ash of cigarette sample B (white tobacco) are shown in Table 9.
[0089] Table 9 Detection results of chromium, nickel, arsenic, selenium, cadmium and lead in soot of cigarette sample B
[0090] element Cr Ni As Se Cd Pb Content (ng / cig) 434.4 821.3 135.3 26.0 769.4 1337.0
example 3
[0092] The specific steps are as described in Example 1. For cigarette sample C (oriental tobacco), the contents of chromium, nickel, arsenic, selenium, cadmium, and lead in cigarette ash were measured in Table 10.
[0093] Table 10 Detection results of chromium, nickel, arsenic, selenium, cadmium and lead in cigarette ash of sample C
[0094] element Cr Ni As Se Cd Pb Content (ng / cig) 656.4 869.2 181.1 42.5 310.9 661.9
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Abstract
The invention discloses a method for detecting chromium, nickel, arsenic, selenium, cadmium and lead elements in cigarette ashes. The method is characterized in that cigarette ashes are collected by using a cigarette ash plate, a cigarette ash sample is dispelled by adopting a microwave digestion method, and the contents of chromium, nickel, arsenic, selenium, cadmium and lead elements in the cigarette ashes are detected by inductively coupled plasma mass spectrometry. The cigarette ashes are collected by adopting the cigarette ash plate, independent collection of each cigarette ash is achieved on a conventional smoking machine, and loss of cigarette ashes and cross contamination of different cigarette ashes in the smoking process are effectively avoided. The sample is processed by adopting the microwave digestion method, so that the risk caused by use of a perchloric acid in the traditional electric hot plate digestion mode is avoided, the dosage of the acid is reduced, the digestion ability is improved, the method is good in digestion effect, less in element loss, and simple and easy to operate, and the used mixed acid system is applicable to treatment of the cigarette ash sample, and thorough to digest. The interference is effectively corrected by adopting inductively coupled plasma mass spectrum parameters, and the method is high in sensitivity, good in repeatability, high in recovery rate, and accurate in result.
Description
technical field [0001] The invention belongs to the technical field of physical and chemical inspection of cigarettes, and mainly relates to the field of determination of trace elements in cigarette ash, in particular to a method for collecting and processing cigarette ash and using an inductively coupled plasma mass spectrometer to measure chromium, nickel and arsenic in cigarette ash , selenium, cadmium, lead method. Background technique [0002] Heavy metal elements such as chromium, nickel, arsenic, selenium, cadmium, and lead are harmful components in cigarettes and smoke. The Canadian government’s list of 46 harmful substances in 1998, my country’s FCTC implementation plan in 2006, and the 101 tobacco and smoke harmful components list issued by the FDA in 2011 will all contain heavy metals including chromium, nickel, arsenic, selenium, cadmium, and lead. Elements are listed as disclosures and regulated content. Heavy metal elements are inhaled by burning cigarettes, o...
Claims
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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/62G01N1/44G01N27/626
Inventor 陈再根胡清源李雪庞永强朱风鹏姜兴益罗彦波刘楠侯宏卫邢军
Owner CHINA NAT TOBACCO QUALITY SUPERVISION & TEST CENT
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