氣相色譜法測定室內(nèi)空氣中苯系物，芝麻香白酒，3-甲硫基丙醇，室內(nèi)空氣，焦?fàn)t煤氣，煉廠氣，天然氣，變壓器油，乙酸乙酯，醫(yī)療器械，環(huán)氧乙烷，三甲胺，二甲醚，乙縮醛，乙縮醛

氣相色譜法測定室內(nèi)空氣中苯系物
氣相色譜法測定室內(nèi)空氣中苯系物 詳細(xì)信息：

名稱：苯系物專用柱
規(guī)格：2m*1/8
型號：HH-BEN-2
應(yīng)用：苯系物在線測定

室內(nèi)空氣的苯系物監(jiān)測的不確定度分析有助于提高室內(nèi)空氣監(jiān)測工作的準(zhǔn)確度.為此找出了影響苯系物測定的主要干擾因素,對其影響作了評估,并采取有關(guān)方法進(jìn)行改進(jìn),以降低不確定度,提高測量的準(zhǔn)確度.

浩瀚色譜（山東）應(yīng)用技術(shù)開發(fā)有限公司優(yōu)化了固體吸附/熱解吸-氣相色譜法測定室內(nèi)空氣中苯,甲苯,乙苯,對二甲苯,間二甲苯,異丙苯,鄰二甲苯和苯乙烯等8種苯系物的方法.結(jié)果表明,目標(biāo)物色譜峰分離度均大于1.5;在10～500 ng范圍內(nèi),8種苯系物質(zhì)量與色譜峰面積呈良好的線性,相關(guān)系數(shù)r為0.999 7～0.999 9;該方法的檢出限為0.50～3.48ng,當(dāng)采氣量為2L時(shí),低檢出濃度為0.25×10~(-3)～1.74×10~(-3)mg/m~3,相對標(biāo)準(zhǔn)偏差為1.2%～9.1%(n=6),回收率在94.0%～99.5%之間.該方法分離效果好,靈敏度高,精密度好,結(jié)果準(zhǔn)確,可用于室內(nèi)空氣中苯系物含量的檢測.

氣相色譜法測定室內(nèi)空氣中苯系物   測試譜圖：




Determination of Benzenes in Indoor Air by Gas Chromatography
Determination of Benzenes in Indoor Air by Gas Chromatography Details:

Name: Special column for benzene series
Specifications: 2m*1/8
Model: HH-BEN-2
Application: On-line determination of benzene series

Uncertainty analysis of benzene series monitoring in indoor air is helpful to improve the accuracy of indoor air monitoring. To this end, the main interference factors affecting the measurement of benzene series have been found out, their influences have been evaluated, and relevant methods have been adopted. Improvements have been made to reduce uncertainty and improve measurement accuracy.

Haohan Chromatography (Shandong) Application Technology Development Co., Ltd. optimized solid adsorption/thermal desorption-gas chromatography for the determination of benzene, toluene, ethylbenzene, p-xylene, m-xylene, cumene, o-xylene and benzene in indoor air The results showed that the chromatographic peak resolutions of the target compounds were all greater than 1.5; in the range of 10-500 ng, the mass of the 8 benzene series and the chromatographic peak area showed a good linearity, and the correlation coefficient r was 0.999 7～0.999 9; the detection limit of this method is 0.50～3.48ng, when the gas extraction volume is 2L, the minimum detection concentration is 0.25×10~(-3)～1.74×10~(-3)mg/m ~3, the relative standard deviation is 1.2%-9.1% (n=6), and the recovery rate is between 94.0% and 99.5%. The method has good separation effect, high sensitivity, good precision and accurate results, and can be used in indoor air Detection of benzene series content.

Determination of benzene series in indoor air by gas chromatography Test spectrum: