測(cè)定工作場(chǎng)所空氣中一甲胺、二甲胺的頂空氣相色譜儀 測(cè)定工作場(chǎng)所空氣中一甲胺、二甲胺的頂空氣相色譜儀 詳細(xì)信息:
名稱:HH-Tamine30毛細(xì)管柱
規(guī)格:30m*0.32mm*5.0um
高使用溫度:280°C
編號(hào):
浩瀚色譜(山東)應(yīng)用技術(shù)開發(fā)有限公司建立工作場(chǎng)所空氣中一甲胺,二甲胺的頂空氣相色譜測(cè)定方法。方法酸性吸收液采集空氣中的一甲胺、二甲胺,堿溶液中和后頂空進(jìn)樣氣相色譜,經(jīng)HH-Tamine30毛細(xì)管色譜柱分離,氫焰離子化檢測(cè)器測(cè)定。結(jié)果一甲胺濃度范圍為11.70~93.54μg/ml時(shí),標(biāo)準(zhǔn)曲線回歸方程為Y=0.458 1X-1.034 5(r=0.999 0);二甲胺濃度范圍為10.59~84.74μg/ml時(shí),標(biāo)準(zhǔn)曲線的回歸方程為Y=0.864 5X-2.206(r=0.999 1)。一甲胺方法檢出限為1.65μg/ml,低檢出濃度為0.55 mg/m3(以采集15 L空氣樣品計(jì));二甲胺檢出限為1.54μg/ml,低檢出濃度為0.32 mg/m3(以采集24 L空氣樣品計(jì))。樣品于4℃冰箱內(nèi)可穩(wěn)定保存5 d。結(jié)論該方法可同時(shí)測(cè)定工作場(chǎng)所空氣中一甲胺和二甲胺濃度。
測(cè)定工作場(chǎng)所空氣中一甲胺、二甲胺的頂空氣相色譜儀 測(cè)試譜圖:
Headspace Gas Chromatograph for Determination of Mo
no and Di in the Air of Workplace
Details of headspace gas chromatograph for determination of mo
no and di in the air of workplace:
Name: HH-Tamine30 capillary column
Specification: 30m * 0.32mm * 5.0um
Maximum operating temperature: 280 ° C
No.:
Haohan Chromatographic (Shandong) Application Technology Development Co., Ltd. established a headspace gas chromatographic method for the determination of mo
no and di in the air of workplaces. Methods Mo
no and di in air were collected with acid absorption solution, neutralized with alkali solution, and then injected into headspace gas chromatography, separated with HH-Tamine30 capillary column, and determined with hydrogen flame io
nization detector. Results The co
ncentration range of mo
no was 11.70 ~ 93.54 μ At g/ml, the regression equation of standard curve is Y=0.458 1X-1.034 5 (r=0.999 0); The co
ncentration range of di is 10.59 ~ 84.74 μ At g/ml, the regression equation of the standard curve is Y=0.864 5X-2.206 (r=0.999 1). The detection limit of mo
no method is 1.65 μ G/ml, the lowest detectable co
ncentration is 0.55 mg/m3 (calculated by collecting 15 L air sample); The detection limit of di is 1.54 μ G/ml, the lowest detectable co
ncentration is 0.32 mg/m3 (calculated by collecting 24 L air sample). The sample can be stored stably for 5 days in the refrigerator at 4 ℃. Co
nclusion This method can be used to determine the co
ncentration of mo
no and di in the air of workplace simultaneously.
Headspace gas chromatograph test spectrogram for determination of mo
no and di in the air of workplace: