A Comparative Study of Depth and Cross Section Measurement of Food Packaging

User Benefits

- The new Raman depth measurement function allows for minimum sample preparation (if any). - No special equipment for sample preparation is needed. - The chemical composition and the length of individual layers can be accurately determined.

Introduction

In recent years, the analysis of food packaging materials has gained significant attention due to its critical role in ensuring food safety and quality. Raman spectroscopy and in extend Raman microscopy have emerged as powerful tools for characterizing various aspects of foods packaging materials, offering high sensitivity and specificity in identifying chemical composition, structural properties, and potential contaminants. The Shimadzu AIRsight infrared Raman microscope is a powerful instrument that offers a unique combination of FTIR and Raman analysis methods. This allows for a comprehensive analysis of various materials. One of its main advantages is the ability to measure the same sample without the need to change instruments, which can save a significant amount of time and effort. Furthermore, the AIRsight microscope provides the capability to accurately measure the same spot on a sample using both FTIR and Raman techniques. This is particularly valuable as it enables to obtain complementary information from the same area, enhancing the depth and accuracy of their analysis. The Raman mode of the Shimadzu AIRsight microscope allows for analysis in the depth direction, making it possible to analyze transparent or translucent samples. This is particularly beneficial when examining materials such as polymer foils or glass, where the laser used in Raman spectroscopy can penetrate the interior of the sample. This Application News focuses on the Raman depth measurement, and its ability to deliver comparable and equally reliable results when compared to cross-sectional analysis derived from the same sample by pointing also out the non-destructive nature the method.

February 2, 2025 GMT