Reports current

2022 Collaborative Study for the Determination of Nitrate and Nitrite in Tobacco and Tobacco Products using Ion Chromatography

TTPA Technical Report

August 2023 Ref. TTPA-319-1-CTR

In late 2021, the CORESTA Tobacco and Tobacco Products Analytes Sub-Group (TTPA) initiated an interlaboratory study for the determination of nitrate and nitrite in tobacco and tobacco products by Ion Chromatography (IC). This study included a variety of samples including ground tobacco, cigarette filler, cigar filler and four styles of smokeless tobacco. The intent of this study was to draft a technical report to include repeatability (r) and reproducibility (R) values, z-scores, and a CRM if supported by the study results.

The study demonstrated that the method was suitable for the determination of nitrate in tobacco and tobacco products, resulting in the publication of the CORESTA Recommended Method No. 103.

However, the results for nitrite were inconsistent and suggested either the laboratories needed further practice implementing the method or the method needed additional development for use as an international consensus standardized method.


Related documents

CRM 103 - Determination of Nitrate in Tobacco and Tobacco Products by Ion Chromatography (August 2023)

Report - Determination of Nitrite and Nitrate in Smokeless Tobacco Products by Ion Chromatography and Continuous Flow Analysis - 2016 Collaborative Study (July 2017)