Determination of Cation Content in Tobacco Additives

Cations such as ammonium and counter ions of organic acids may be present in tobacco additives. The flavor and moisture of the tobacco is retained using these additive components.

The appeal of smoking is increased with the addition of ammonium and as a result, the addictive potential is also considered to be increased. To determine the presence of cations in tobacco additives, ion chromatographic separation is performed followed by non-suppressed conductivity detection.

Sample

Tobacco additive

Sample preparation

0.1 g additive dissolved in 100 mL of eluent followed by 1:20 dilution with eluent.

Columns

Metrosep C 6 - 150/4.0

6.1051.420

Metrosep RP 2 Guard/3.5

6.1011.030

Solutions

Eluent

6.25 mmol/L nitric acid

Analysis

Direct conductivity detection

Instrumentation

940 Professional IC Vario ONE

2.940.1100

IC Conductivity Detector

2.850.9010

919 IC Autosampler plus

2.919.0020

 

Flow rate

0.9 mL/minutes

Injection volume

5 μL

Pmax

25 MPa

Recording time

8.5 minutes

Column temperature

32 °C

 

Results

Cation

Concentration (mg/g)

1

Lithium

n.q.

2

Sodium

0.67

3

Ammonium

0.42

4

Magnesium

32.5

5

Potassium

249.3

6

Calcium

n.q.

Metrohm AG

About Metrohm

At Metrohm is one of the world’s most trusted manufacturers of high-precision instruments for chemical analysis. Metrohm was founded in 1943 by engineer Bertold Suhner in Herisau, Switzerland. Today, Metrohm is represented in 120 countries by subsidiaries and exclusive distributors. The global Metrohm Group also includes the Dutch companies Metrohm Applikon and Metrohm Autolab, manufacturers of online analyzers and instruments for electrochemical research, respectively. Recently, the Metrohm Group was joined by Metrohm Raman, a leading manufacturer of handheld Raman spectrometers.

Metrohm is the global market leader in analytical instruments for titration. Instruments for ion chromatography, voltammetry, conductivity, and stability measurement make the Metrohm portfolio for ion analysis complete. Instruments for Near-infrared and Raman spectroscopy are another, strongly growing segment of the Metrohm portfolio.

Metrohm is a problem solver, both in the laboratory and within the industrial process. To this end, the company offers their customers complete solutions, including dedicated analytical instrumentation as well as comprehensive application know-how. More than 30% of the company’s employees at the Metrohm international headquarters in Herisau work in R&D.

Metrohm has been owned 100% by the non-profit Metrohm Foundation since 1982. The Metrohm Foundation, which does not exert any influence on the company’s business operations, sponsors gifted students in the natural sciences, supports charitable and philanthropic purposes and, above all, ensures the independence of the company.


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Last updated: May 16, 2020 at 5:15 PM

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