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HH-WAX 毛細(xì)管柱測(cè)定依地酸二鈉中甲醛殘留量

HH-WAX 毛細(xì)管柱測(cè)定依地酸二鈉中甲醛殘留量

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產(chǎn)品名稱:HH-WAX 毛細(xì)管柱測(cè)定依地酸二鈉中甲醛殘留量

產(chǎn)品型號(hào):HH-WAX

產(chǎn)品廠商:浩瀚色譜(山東)應(yīng)用技術(shù)開(kāi)發(fā)有限公司

簡(jiǎn)單介紹

毛細(xì)管柱測(cè)定依地酸二鈉中甲醛殘留量,液化石油氣,二甲醚,甲縮醛,室內(nèi)空氣,增塑劑,塑化劑,乙酸乙酯,醫(yī)療器械,氨水,增塑劑,頂空進(jìn)樣器,裂解進(jìn)樣器,醫(yī)療器械,EO,頂空

HH-WAX 毛細(xì)管柱測(cè)定依地酸二鈉中甲醛殘留量的詳細(xì)介紹

毛細(xì)管柱測(cè)定依地酸二鈉中甲醛殘留量
毛細(xì)管柱測(cè)定依地酸二鈉中甲醛殘留量 詳細(xì)信息:

浩瀚色譜(山東)應(yīng)用技術(shù)開(kāi)發(fā)有限公司建立依地酸二鈉(EDTA-2Na)中殘留甲醛的測(cè)定方法。方法:采用頂空氣相色譜法測(cè)定。HH-WAX氣相毛細(xì)管柱(30 m×0.25 mm,0.25μm),分流進(jìn)樣,分流比為2∶1;載氣為N_2,流速為1.0 ml·min~(-1);檢測(cè)器為FID;進(jìn)樣口溫度為230℃,檢測(cè)器溫度為260℃;采用程序升溫法:起始溫度40℃,保持6 min,再以40℃·min~(-1)速率升溫到230℃后,維持10min;進(jìn)樣量為1μl。分別取對(duì)照品溶液和供試品溶液,95℃加熱平衡25 min,頂空進(jìn)樣,按外標(biāo)法以峰面積計(jì)算含量。結(jié)果:甲醛標(biāo)準(zhǔn)溶液在5.10~102.00μg·ml~(-1)濃度范圍內(nèi)與峰面積的線性關(guān)系良好(r=0.999 7),平均回收率為84.60%(RSD=3.82%,n=9)。結(jié)論:本方法簡(jiǎn)單、快速、準(zhǔn)確,可以用于依地酸二鈉中甲醛殘留量的測(cè)定。

毛細(xì)管柱測(cè)定依地酸二鈉中甲醛殘留量  測(cè)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:

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