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Shandong Ruineng Instrument Co., Ltd
Shandong Ruineng Instrument - Experimental Plan for Detection and Analysis of Acetaldehyde Residue in PET Bottles for Drug Packaging
Date: 2025-12-12Read: 2
Detection and analysis of residual acetaldehyde in PET bottles for drug packaging
Acetaldehyde is used for pharmaceutical packagingPETThe potential volatile degradation products in the bottle production process have a direct impact on the chemical stability of the drug and the safety of patient medication due to their residual risk. To ensure the safety of drug packaging materials, this experimental plan is specially formulated. Aiming to establish a scientific, accurate, and reliable method for detecting acetaldehyde residues, to achieve the detection of drug packagingPETQuantitative analysis of residual acetaldehyde in bottles.
Ruineng Instrument strictly follows the Chinese Pharmacopoeia2025New general rules added in the annual edition4208The "Plastic Acetaldehyde Determination Method" uses a gas chromatography column to establish drug packagingPETDetection plan for acetaldehyde content in bottles. This scheme is based on the principle of gas-solid equilibrium, and can accurately and sensitively determine by combining headspace injection with gas chromatographyPETTrace amount in bottle. Acetaldehyde (detection limit up to)0.03Mg）The method has good reproducibility and meets the requirementsPharmacopoeia quality control requirements for drug packaging materials.
1main equipment
1.1Core testing instruments:
gas chromatographyInstrument matchingheadspacesampler-Equipped with a hydrogen flame ionization detector（FID logarithmic amplifier）；
Chromatographic column: OV624 30 * 0.53 * 3.0
Equipped with automatic headspace injection function, it can accurately control parameters such as column temperature, injection port temperature, detector temperature, headspace equilibrium temperature, time, etc.
2、 Analyze and test data
2.1Curve (standard concentration: (headspace bottle plus)1mlStandard sample)
①0.1568ug/ml；②0.3136ug/ml；③0.784ug/ml；④1.568ug/ml；⑤3.136ug/ml
2.2 Curve spectrogram
4、 Precautions
1. Standard and reagent management: Acetaldehyde standard is volatile and irritating, and should be operated in a fume hood. Weighing should be done quickly and accurately to avoid volatilization loss; All reagents must be used within their expiration date, and ultrapure water must be prepared and used on site to ensure no acetaldehyde contamination.
2. Use of headspace bottle: The headspace bottle, rubber stopper, and aluminum cap need to go through120℃high-temperature baking2 hAfter cooling, remove residual acetaldehyde; When packaging the sample, it is necessary to operate quickly to avoid air entering the headspace bottle. After sealing, it is necessary to check for leaks to prevent acetaldehyde volatilization from affecting the test results.
3. Instrument operation specifications: The equilibrium temperature, time, and injection needle temperature of the headspace sampler must be strictly controlled to ensure that acetaldehyde is fully evaporated and injected stably; After the gas chromatograph is turned on, the chromatographic column needs to be fully aged, Remove the air from the carrier gas system and wait for the instrument baseline to stabilize (baseline noise)≤0.01 mV）Perform sample testing again.
4. Safety protection: During the experiment, protective gloves and goggles should be worn, and standard sample weighing and sample processing should be carried out in a fume hood;Hydrogen has the ability to support combustionIt is necessary to ensure that there are no leaks in the hydrogen gas cylinders and pipelines, and open flames are strictly prohibited in the laboratory. Fire extinguishing equipment should be equipped.
5. Data recording and traceability: Detailed recording of experimental dates, instrument models, standard product information, sample batches, experimental parameters, testing data, and calculation results to ensure data traceability; After the experiment is completed, clean the instrument and experimental table in a timely manner, and turn off the gas cylinder and instrument power supply.