HH-WAX 毛細(xì)管柱測定依地酸二鈉中甲醛殘留量

、準(zhǔn)確,可以用于依地酸二鈉中甲醛殘留量的測定。

毛細(xì)管柱測定依地酸二鈉中甲醛殘留量  測試譜圖：




Determination of Residual Formaldehyde in Disodium Edetate by Capillary Column
Determination of formaldehyde residues in disodium edetate by capillary column Details:

Haohan Chromatography (Shandong) Application Technology Development Co., Ltd. established a method for the determination of residual formaldehyde in disodium edetate (EDTA-2Na). Methods: Determined by headspace gas chromatography. HH-WAX gas-phase capillary column (30 m×0.25 mm, 0.25 μm), split injection, split ratio of 2:1; carrier gas was N_2, flow rate was 1.0 ml·min~(-1); detector was FID; The temperature of the injection port was 230 °C, and the temperature of the detector was 260 °C; the temperature program was adopted: the initial temperature was 40 °C, maintained for 6 min, and then heated to 230 °C at a rate of 40 °C min~(-1), and maintained for 10 min ; The injection volume is 1 μl. Take the reference solution and the test solution respectively, heat and equilibrate at 95 ℃ for 25 min, inject the sample into the headspace, and calculate the content by the peak area according to the external standard method. Results: The formaldehyde standard solution had a good linear relationship with the peak area in the concentration range of 5.10~102.00μg·ml~(-1) (r=0.999 7), and the average recovery was 84.60% (RSD=3.82%, n=9). . Conclusion: The method is simple, rapid and accurate, and can be used for the determination of formaldehyde residues in disodium edetate.

Determination of formaldehyde residue in disodium edetate by capillary column Test spectrum: