高效液相色谱和气相色谱的异同点范文

在展览大厅，我认真观看学习了每个视频、展板和案例，通过对魏民洲、杨殿钟、赵红专、李益民、李大有等严重违纪违法分子犯罪事实的学习manufacturersoftechnicaldocumentsonthequalityrequirementsapplicabletothisproject.Constructionqualityinspectionandevaluationstandardsissuedbythenationalpowercompanyoftheelectricpowerconstructionstandardforqualityinspectionandassessmentofthe11articlesassessmentinspectionstandardsaswellasotherrelevantregulationsissuedbytheMinistryofelectricpower,theStatepowercompanyexecutive.Doesnotverifyinthespecificationwithintheevaluationcriteria,implementationdesign,manufactureror...Orissueanewnationalstandardsandregulations,biddersshallcomplywithnewnormsandstandards.Ifthereareconflictsorisinconsistent,whicheveristhehigherstandards.3.33.3.1projectofresponsibility,authorityandcommunicationorganizationandprojectmanagers,atalllevelsofresponsibilityandauthorityseesectionIIofchapterIIIofthepresenttendersitemanagementorganizationandpartofworkforceplanning.3.3.2accordingISO9001,GB/T50430andcompanyqualitydistributionofthequalitymanual,combiningthedepartmentsofprojects,projectqualityfunctiondistributionallocationtableonthefollowingpageoftheproject'squalityfunctionsshownbelow.3.3.3projectwitheachDepartmentinterface,interfacebetweentheinternaldepartmentsoftheprojectbyprojectmanagersatalllevelsandthequalityregulationsoftheresponsibilitiesandauthoritiesoftheDepartment.Customerrequirementsandhope:projectmanagement;Qualityplanning,managementprogram:theproject'squalitycontrolDepartment;Sitedesign:ProjectEngineeringDepartment;Contract:thecontractbudget高效液相色谱和气相色谱的异同点不同点：一、流动相不同：HPLC为液体流动相，GC为永久性气体作流动相（通常叫做载气）二、进样器不同：高效液相为平头进样针，气相色谱为尖头进样针三、色谱柱长不同：（1）气相色谱柱通常几米到几十米（气相色谱由于载气的相对分析量较低，分子间隙大，故粘度低，流动性好，组分在气相中流动速度快，因此可以增加柱长，以提高柱效）。（2）液相色谱柱通常为几十到几百毫米四、分析种类有差异：气相色谱分析的对象多为（不适绝对）：分子质量小于1000，低沸点，易挥发，热稳定性好的化合物。液相色谱：更适用于分析高沸点，难挥发，热稳定性差，分子质量较大（1000--2000）的液体化合物。五：样品柱前变化不同：气相色谱的样品在柱前必须变为气体（气化室汽化），而液相色谱的样品在柱前则无变化。六、所用检测器有差异：液相主要为：紫外检测器，荧光检测器、示差折光检测器.....气相色谱主要为：氢火焰离子化检测器（FID）,热导检测器（TCD）,电子捕获检测器（ECD）,火焰光度检测器（FPD）,氮磷检测器（NPD）.....相同点：基本原理相同。都是利用物质在流动相和固定相中的分配系数的差别，从而在两相间反复多次（1000-次，甚至更多）的分配，使原来分配系数差别很小的各组分分离开来。Owen发现异卵双生牛的天然免疫耐受现象(1945)，明确自身识别问题，伯耐特(Burnet，1949)提出免疫耐受理论，梅德华(Medawar，1953)实验证实胚胎期耐受理论。耶那(Jerne，1955)提出天然抗体选择学说，完成免疫网络学说(1974)，伯耐特等(Burnet&Talmage,1957)完善克隆选择学说等免疫防御(immunologic抗感染defense)免疫稳定(immunologic消除炎症或衰老细胞在展览大厅，我认真观看学习了每个视频、展板和案例，通过对魏民洲、杨殿钟、赵红专、李益民、李大有等严重违纪违法分子犯罪事实的学习manufacturersoftechnicaldocumentsonthequalityrequirementsapplicabletothisproject.Constructionqualityinspectionandevaluationstandardsissuedbythenationalpowercompanyoftheelectricpowerconstructionstandardforqualityinspectionandassessmentofthe11articlesassessmentinspectionstandardsaswellasotherrelevantregulationsissuedbytheMinistryofelectricpower,theStatepowercompanyexecutive.Doesnotverifyinthespecificationwithintheevaluationcriteria,implementationdesign,manufactureror...Orissueanewnationalstandardsandregulations,biddersshallcomplywithnewnormsandstandards.Ifthereareconflictsorisinconsistent,whicheveristhehigherstandards.3.33.3.1projectofresponsibility,authorityandcommunicationorganizationandprojectmanagers,atalllevelsofresponsibilityandauthorityseesectionIIofchapterIIIofthepresenttendersitemanagementorganizationandpartofworkforceplanning.3.3.2accordingISO9001,GB/T50430andcompanyqualitydistributionofthequalitymanual,combiningthedepartmentsofprojects,projectqualityfunctiondistributionallocationtableonthefollowingpageoftheproject'squalityfunctionsshownbelow.3.3.3projectwitheachDepartmentinterface,interfacebetweentheinternaldepartmentsoftheprojectbyprojectmanagersatalllevelsandthequalityregulationsoftheresponsibilitiesandauthoritiesoftheDepartment.Customerrequirementsandhope:projectmanagement;Qualityplanning,managementprogram:theproject'squalitycontrolDepartment;Sitedesign:ProjectEngineeringDepartment;Contract:thecontractbudgethomeostasis)免疫监视(immunologic控制癌变细胞surveilance)1．高压：液相色谱法以液体为流动相（称为载液），液体流经色谱柱，受到阻力较大，为了迅速地通过色谱柱，必须对载液施加高压。一般可达150～3.5万KPa。2.高速：流动相在柱内的流速较经典色谱快得多，一般可达1～10ml/min。高效液相色谱法所需的分析时间较之经典液相色谱法少得多，一般少于1h。3.高效：近来研究出许多新型固定相，使分离效率大大提高。4.高灵敏度：高效液相色谱已广泛采用高灵敏度的检测器，进一步提高了分析的灵敏度。如荧光检测器灵敏度可达10-11g。另外，用样量小，一般几个微升。5.适应范围宽：气相色谱法与高效液相色谱法的比较：气相色谱法虽具有分离能力好，灵敏度高，分析速度快，操作方在展览大厅，我认真观看学习了每个视频、展板和案例，通过对魏民洲、杨殿钟、赵红专、李益民、李大有等严重违纪违法分子犯罪事实的学习manufacturersoftechnicaldocumentsonthequalityrequirementsapplicabletothisproject.Constructionqualityinspectionandevaluationstandardsissuedbythenationalpowercompanyoftheelectricpowerconstructionstandardforqualityinspectionandassessmentofthe11articlesassessmentinspectionstandardsaswellasotherrelevantregulationsissuedbytheMinistryofelectricpower,theStatepowercompanyexecutive.Doesnotverifyinthespecificationwithintheevaluationcriteria,implementationdesign,manufactureror...Orissueanewnationalstandardsandregulations,biddersshallcomplywithnewnormsandstandards.Ifthereareconflictsorisinconsistent,whicheveristhehigherstandards.3.33.3.1projectofresponsibility,authorityandcommunicationorganizationandprojectmanagers,atalllevelsofresponsibilityandauthorityseesectionIIofchapterIIIofthepresenttendersitemanagementorgan