Carbon dioxide (CO2) is a commonly used additive in food and
beverage industry (e.g. for soft drink, brewery, and champagne carbonation).
Its fabrication process can lead to the presence of impurities such as
aromatics, BTEX, ammonia, acetaldehyde, Total Hydrocarbons and sulfur compounds
(Total Sulfur Content, SO2, COS, mercaptans...).
To ensure people’s safety, limit values of these impurities has been set by
various health and safety regulations. The International Society of Beverage
Technologists (ISBT) CO2 Guidelines
offers a list of parameters including the molecules listed above and its
recommended limit (Table 1).
Gas Chromatography (GC) is one of the most commonly used techniques for CO2
quality and purity monitoring to ensure meeting legal requirements.
Chromatotec® has developed a GC analytical system for impurities
measurement in CO2. It consists of a fully independent and automatic
cabinet including the following modules :
The high stability and the ease of use make Chromatotec’s analyzers perfectly suitable for CO2 quality control. Moreover, results are validated by the internal calibration system.
Case Study CO2 quality control food industry