GB/T 39998-2021 "Paper, board and paper products—Determination of alkylphenol polyethoxylates—High performance liquid chromatography-mass spectrometry" is applicable to paper, board, and paper products, and may also be referenced for use with other related products. It specifies the use of high performance liquid chromatography-mass spectrometry to determine the content of octylphenol polyethoxylates and nonylphenol polyethoxylates, with the detection limit and quantification limit for both substances corresponding to the specified standard values. The method involves ultrasonic extraction of the sample with methanol, filtration through a membrane, and subsequent instrumental analysis. Detection is performed using ESI positive ion mode, quantification is carried out by the external standard method, and the standard establishes procedures for qualitative and quantitative analysis.
| Status | Active | ||
|---|---|---|---|
| CCS | Y30 | ICS | 85.010 |
| Release Date | 2021-04-30 00:00:00 | Implementation Date | 2021-11-01 00:00:00 |