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《空氣中苯、甲苯和二甲苯的測定.ppt》由會員上傳分享，免費在線閱讀，更多相關(guān)內(nèi)容在教育資源-天天文庫。
1、空氣中苯、甲苯和二甲苯的測定溶劑解吸-氣相色譜法實習(xí)指導(dǎo)老師：鄭丹Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.MOEKeyLaboratoryofEnvironmental&Health,InstituteofEnvironmentalMedicine,SchoolofPublicHealth【目的和要求】掌握氣相色譜法測定空氣中苯、甲苯和二甲苯的基本原理和操作技術(shù)；熟悉氣相色譜儀器的基本操作和參數(shù)設(shè)置；了解玻璃毛細(xì)管色譜住條件的
2、優(yōu)化；出峰時間定性的方法。Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.MOEKeyLaboratoryofEnvironmental&Health,InstituteofEnvironmentalMedicine,SchoolofPublicHealth【原理】空氣中的苯、甲苯、二甲苯用活性碳管采集，二硫化碳解吸后進樣，經(jīng)色譜柱分離，氫焰離子化檢測器檢測，以保留時間定性，峰面積定量。Evaluationonly.Createdwi
3、thAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.MOEKeyLaboratoryofEnvironmental&Health,InstituteofEnvironmentalMedicine,SchoolofPublicHealth【儀器及試劑】1.活性碳采樣管：6×75mm，溶劑解吸型，內(nèi)裝100mg/50mg活性碳。2.空氣采樣器：QC-2B型大氣采樣儀，流量0.1-1.5L/min。3.玻璃器皿：具塞比色管，10ml；移液管，10mL，微量注射器：10、5?l。4.二硫化碳：
4、色譜鑒定無干擾雜峰。5.苯、甲苯和二甲苯：分析純，純度99.5%以上。Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.MOEKeyLaboratoryofEnvironmental&Health,InstituteofEnvironmentalMedicine,SchoolofPublicHealthEvaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.
5、0.Copyright2004-2011AsposePtyLtd.MOEKeyLaboratoryofEnvironmental&Health,InstituteofEnvironmentalMedicine,SchoolofPublicHealthEvaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.MOEKeyLaboratoryofEnvironmental&Health,InstituteofEnvironmentalMedicin
6、e,SchoolofPublicHealth6.氣相色譜儀（GCAgilent6890N）條件：進樣口250℃，分流比（30.0：1），載氣：高純氮氣，玻璃毛細(xì)管柱：HP-5毛細(xì)管色譜柱，恒流模式，流量：1.2ml/min。柱溫80℃，保持7min。氫焰離子化檢測器（FID）：300℃。Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.MOEKeyLaboratoryofEnvironmental&Health,InstituteofE
7、nvironmentalMedicine,SchoolofPublicHealthEvaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.MOEKeyLaboratoryofEnvironmental&Health,InstituteofEnvironmentalMedicine,SchoolofPu
