名稱：填充柱

固定相：聚丁二酸乙醇酯:磷酸:101 硅烷化白色擔(dān)體 = 5:1.5:100；

規(guī)格：2m*4mm

應(yīng)用：GBZT 300.118-2017 工作場所空氣有毒物質(zhì)測定 第118部分：乙酸酐、馬來酸酐 和鄰苯二甲酸酐

鄰苯二甲酸酐的溶劑洗脫-氣相色譜法

空氣中的氣溶膠態(tài)鄰苯二甲酸酐用超細(xì)玻璃纖維濾紙采集，丙tong洗脫后進(jìn)樣，經(jīng)氣相色譜柱分離， 氫焰離子化檢測器檢測，以保留時間定性，峰高或峰面積定量。

GBZ/T 300.118-2017 工作場所空氣有毒物質(zhì)測定 第118部分：乙酸酐、馬來酸酐 和鄰苯二甲酸酐

本標(biāo)準(zhǔn)代替GBZ/T 160.60-2004 工作場所空氣有毒物質(zhì)測定 酸酐類化合物

GBZ/T 300的本部分規(guī)定了工作場所空氣中乙酸酐的溶劑解吸-氣相色譜法、馬來酸酐的溶液吸收-液相色譜法和鄰苯二甲酸酐的溶劑洗脫-氣相色譜法。

本部分適用于工作場所空氣中乙酸酐、馬來酸酐和鄰苯二甲酸酐濃度的檢測。

浩瀚色譜（山東）應(yīng)用技術(shù)開發(fā)有限公司：空氣中鄰苯二甲酸酐用玻璃纖維濾紙采集,隨即放入預(yù)先裝有2 ml丙酮的樣品瓶中,蓋塞,搖勻后用聚丁二酸乙醇酯:磷酸:101 硅烷化白色擔(dān)體 = 5:1.5:100；填充柱氣相色譜(FID)測定。鄰苯二甲酸酐濃度在0~200μg/ml范圍內(nèi)線性關(guān)系良好,線性方程y=8.9+12.6x(r=0.999 9。檢出限為0.39μg/ml,若采集30 L空氣樣品,則低檢出濃度分別為0.026 mg/m3,平均加標(biāo)回收率99.7%~101.4%,相對標(biāo)準(zhǔn)偏差在1.2%~3.7%。本方法適用于工作場所空氣中鄰苯二甲酸酐濃度的測定。

工作場所空氣中鄰苯二甲酸酐測定 測試譜圖：




Determination of Phthalic Anhydride in the Air of Workplace
Determination of Phthalic Anhydride in the Air of Workplace Details:

Name: Packed column

Stationary phase: Polyethanol succinate: Phosphoric acid: 101 Silanized white support = 5:1.5:100;

Specification: 2m*4mm

Application: GBZT 300.118-2017 Determination of Toxic Substances in Workplace Air Part 118: Acetic Anhydride, Maleic Anhydride and Phthalic Anhydride

Solvent elution of phthalic anhydride-gas chromatography

The aerosol phthalic anhydride in the air is collected with ultra-fine glass fiber filter paper, and the sample is eluted with acetone and tong. The sample is separated by a gas chromatography column and detected by a hydrogen flame ionization detector to determine the retention time, peak height or peak Quantitative area.



GBZ/T 300.118-2017 Determination of Toxic Substances in Workplace Air Part 118: Acetic Anhydride, Maleic Anhydride and Phthalic Anhydride

This standard replaces GBZ/T 160.60-2004 Determination of toxic substances in workplace air, acid anhydride compounds

This part of GBZ/T 300 specifies the solvent desorption of acetic anhydride in the workplace air-gas chromatography, the solution absorption of maleic anhydride-high performance liquid chromatography and the solvent elution of phthalic anhydride-gas chromatography.

This section applies to the detection of the concentration of acetic anhydride, maleic anhydride and phthalic anhydride in the air of the workplace.

Haohan Chromatography (Shandong) Applied Technology Development Co., Ltd.: The phthalic anhydride in the air is collected with glass fiber filter paper, and then placed in a sample bottle pre-filled with 2 ml of acetone, capped, and shaken with polyethylene succinate. Ester: phosphoric acid: 101 silanized white support = 5: 1.5: 100; packed column gas chromatography (FID) determination. The concentration of phthalic anhydride has a good linear relationship in the range of 0~200μg/ml, the linear equation y=8.9+12.6x(r=0.999 9. The detection limit is 0.39μg/ml, if 30 L air samples are collected, the lowest The detected concentrations were 0.026 mg/m3, the average recovery rate was 99.7%~101.4%, and the relative standard deviation was 1.2%~3.7%. This method is suitable for the determination of the concentration of phthalic anhydride in the air in the workplace.

Determination of Phthalic Anhydride in the Air of Workplace Test Spectra: