Automatic detection equipment for solvent residues in edible packaging materials

Automatic detection equipment for solvent residues in edible packaging materialsThe determination of solvent residues in food contact materials and products is an important step in ensuring food safety. Here are some key information about the measurement:

1、 Measurement significance

Food contact materials and products may come into contact with food during the production, processing, packaging, transportation, and other processes. If the solvent residue exceeds a certain range, it may migrate into the food and pose a threat to human health. Therefore, accurate determination of solvent residues in food contact materials and products is of great significance for monitoring food safety.

2、 Measurement method

1. Gas chromatography (GC):

Suitable for detecting volatile and semi volatile solvents.

High sensitivity and resolution, capable of accurately separating and detecting solvent residues in samples.

2. Liquid chromatography (HPLC):

Suitable for solvents that are not easily volatile or have poor thermal stability.

It can be operated at room temperature and is suitable for detecting solvent residues of thermosensitive substances.

3. Gas chromatography-mass spectrometry (GC-MS):

Combining the advantages of gas chromatography and mass spectrometry, it can provide mass information of solvent molecules, which is helpful for qualitative and quantitative analysis.

It has wide applications in the determination of solvent residues in food contact materials and products.

3、 Measurement steps (using GC-MS method as an example)

1. Sample preparation:

Cut a certain area of the food contact material sample to be tested into fragments of appropriate size.

Put the fragments into a preheated container and quickly seal it.

Place the sealed container in a constant temperature chamber for a period of time to allow the volatile substances in the sample to fully evaporate.

2. Instrument settings:

Based on the boiling point of the solvent to be tested and the separation efficiency of the instrument, set the column temperature and injection chamber temperature.

Set the detector temperature and select the appropriate detector.

Set experimental parameters, including recording time, flow rate, etc.

3. Sample injection and analysis:

Inject the gas in the sample into the gas chromatography-mass spectrometer using an automatic sampler or a manual injection needle.

After the sample is separated in the chromatographic column, it enters the mass spectrometer detector for detection.

4. Data processing and result judgment:

Draw a standard curve based on the detected signal and calculate the concentration of each solvent component in the sample.

Compare the calculated concentration with national standards to determine if the sample meets the requirements.

4、 Related standards

•Automatic detection equipment for solvent residues in edible packaging materialsCompliant with GB 31604.60-2024 "National Food Safety Standard - Determination of Solvent Residues in Food Contact Materials and Products": This standard clearly specifies the types of target analytes and provides multiple measurement methods for selection, which is beneficial for the industry to better control the quality of related products.

5、 Precautions

During the measurement process, the operating procedures should be strictly followed to ensure the accuracy and reliability of the data.

Sample processing and analysis should be carried out under suitable environmental conditions to avoid interference from external factors on the measurement results.

The measurement results should be recorded and reported in a timely manner to identify problems and take corresponding measures.

In summary, the determination of solvent residues in food contact materials and products is one of the important means to ensure food safety. By selecting appropriate measurement methods and strictly following operating procedures, the residual solvent content in the sample can be accurately and reliably determined, providing strong guarantees for food safety.