GB/T 34683-2017 "Determination of formaldehyde content in water-based coatings - High performance liquid chromatography" is specifically designed for the accurate determination of formaldehyde content in water-based coatings. Using acetonitrile as the extraction solvent, the sample undergoes ultrasonic extraction and centrifugation. The extract then reacts with 2,4-dinitrophenylhydrazine for derivatization, and detection is performed using a high-performance liquid chromatograph (or liquid chromatography-mass spectrometer). The formaldehyde content is calculated based on a standard calibration curve, with clearly defined derivatization conditions and instrument parameters to ensure the accuracy and reliability of the test results.
This summary is not the original standard text and is for reference only. For accurate information, please obtain it through official channels.
| Status | Active | ||
|---|---|---|---|
| CCS | G50 | ICS | 87.040 |
| Release Date | 2017-11-01 00:00:00 | Implementation Date | 2018-05-01 00:00:00 |