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气相色谱与原子吸收在线联用技术
...属化合物的形态分析方面受到许多限制。原子吸收光谱(AAS)作为元素特效检测器与GC联用已成为金属形态分析的主要方法,这种联用技术既具备GC分离能力强、基体干扰少等优点,也具备AAS灵敏度高和选择性好的特点,弥补了GC检...
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气相色谱与原子吸收在线联用技术
...属化合物的形态分析方面受到许多限制。原子吸收光谱(AAS)作为元素特效检测器与GC联用已成为金属形态分析的主要方法,这种联用技术既具备GC分离能力强、基体干扰少等优点,也具备AAS灵敏度高和选择性好的特点,弥补了GC检...
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气相色谱与原子吸收联用技术
...属化合物的形态分析方面受到许多限制。原子吸收光谱(AAS)作为元素特效检测器与GC联用已成为金属形态分析的主要方法,这种联用技术既具备GC分离能力强、基体干扰少等优点,也具备AAS灵敏度高和选择性好的特点,弥补了GC检...
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关于召开“气相色谱、液相色谱、气质联用、液质联用、ICP光谱、原子吸收光谱维护保养、常见故障排除与应用技术”培训班通知(一)
...训内容:(一)原子吸收的概述及基础理论,包括:1、AAS仪器概述及国内外AAS仪器的对比;2、AAS基本原理及AAS分析特点。3、AAS仪器的结构、各部分主要功能及AAS仪器的类型;4、原子吸收光谱法(FAAS火焰原子吸收法、GFAAS、氢...
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2009年分析测试学术交流大会于青岛举行
...革命--连续光源原子吸收技术”进行了演讲。汪女士对CS-AAS(连续光源原子吸收光谱)与LS-AAS(锐线光源原子吸收光谱)进行了比较:单个元素分析时21个元素的检出限CS-AAS获得的结果优于LS-AAS。最后介绍了连续光源原子吸收光谱在不...
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在手术室护理过程中建立麻醉医嘱制度
...可。 麻醉医嘱制度[3](anesthesiologist‘sadvicesystem,AAS)的建立是AIMS进一步的补充和完善,也是新的《医疗事故处理条例》出台后,举证责任倒置政策落实的需要,是对麻醉医生和巡回护士的临床麻醉、护理行为的监督需要。...
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高效液相色谱-原子荧光在线联用系统
...以液相色谱为主要分离手段的各种形态分析技术,如HPLC-AAS、HPLC-ICP-MS、HPLC-UV已经发展起来,但由于传统的紫外检测器灵敏度低、HPLC与AAS缺乏商品化的接口、ICP-MS价格昂贵,以及复杂样品基体干扰、仪器光谱干扰等问题,影响了...
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RoHS指令6种有害物质的检测方法简介
...电感耦合等离子体原子发射光谱仪8、原子吸收分析法(AAS法)①适用范围:塑料部件、金属部件、电子元件中铅、镉的含量测试。②仪器:原子吸收光谱仪;③技术特点:AAS方法是最成熟的金属元素仪器测试方法之一,特征原...
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官方验证——确定被验证企业HACCP计划是否正确的实施
...(GS);⑹甲基对硫磷:≤1mg/kg(GS);⑺铅:≤0.3mg/kg(AAS);⑻砷:≤0.2mg/kg(ICP);⑼铜:≤5mg/kg(AAS);⑽棒曲(展青)霉毒素:≤50μg/kg(HPLC)!作者:
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国产科学仪器设备在食品质量安全检测中大有可为
...出伏安法和分光光度仪,如今绝大多用原子吸收光谱仪(AAS)和原子荧光光谱仪(AFS)。AFS可用于检测砷、铅、汞、锡、硒、锗、锑等元素,灵敏度高、检出限低、并可多元素同时检测,且价廉。电感耦合等离子发射光谱—质谱联用...
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Combinedeffectsofdietaryfatandbirthweightonserumcholesterolconcentrations:theHertfordshireCohortStudy
...yGroup1FromtheMedicalResearchCouncilEpidemiologyResourceCentre(SMR,SFB,HES,AAS,EMD,HJM,andCC)andtheDevelopmentalOriginsofAdultHealthandDiseaseCentre(DJPB),UniversityofSouthampton,Southampton,UnitedKingdom2SupportedbytheMedicalResearchCouncil,UnitedKingdom.3Reprintsnotavailable.Addresscorrespondencet...
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Birthweight,weightat1yofage,andbodycompositioninoldermen:findingsfromtheHertfordshireCohortStudy
...nmentalEpidemiologyUnit,UniversityofSouthampton,Southamption,UnitedKingdom(AAS,HES,EMD,HJG,SLD,CC,DJB,andDIP),andUniversityGeriatricMedicine,UniversityofSouthampton,Southampton,UnitedKingdom(AAS)2SupportedbytheMedicalResearchCouncil,UnitedKingdom.3AddressreprintrequeststoAAihieSayer,MRCEnvironmental...
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Theguttakesnearlyall:threoninekineticsininfants
...sadaptingtotheenteralrouteofnutritionafteraprenatalperiodinwhichaminoacids(AAs)weredeliveredviatheumbilicalroute.Therefore,itmaybespeculatedthatalargequantityofAAsisneededforthegrowthandmaintenanceoftheprematureguttoenableitsoptimalfunctionandintegrity.Giventhekeyroleofthegutinthemaintenanceofneonat...
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微波消解氢化物发生ICP-AES法测定血清中Se含量
...定,实验结果满意。1实验部分1.1仪器与试剂日本岛津ICP-AAS-7000型电感耦合等离子原子发射光谱仪;岛津HIG-1型氢化物发生器;BerghofMWS-2微波消解系统。硒标准储备液:100ug/ml单元素溶液(国家标准物质中心)。NaBH4、NaOH均为分析...
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毛细管电泳在食品分析中的应用
...+与Se4+的检出下限为12~25ng/L,As3+的检出下限为800ng/L,与AAS的灵敏度相当,回收率为88%~116%,相对标准偏差(RSD)为4%~18%[4]。 离子化合物的分离选择性由离子当量电导决定。大多数阴离子的当量电导有足够大的差别,可一...
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母亲产后精神抑郁及不安全亲附与婴儿腹痛相关
...调查研究。母亲们在产后第一个月接受了成人亲附量表(AAS)、爱丁堡产后抑郁评分(EPDS)及状态-特质焦虑量表(STAI)的评估,以分别判断母亲的亲附模式、抑郁症状及焦虑状态。婴儿腹痛的诊断则是根据Wessel标准进行的。结果发现,在...
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揭开起始因子eIF4A的别样身份
...9-1321(2006)MarkusAffolterGeorgePyrowolakis2.AnovelfunctionofDrosophilaeIF4AasanegativeregulatorofDpp/BMPsignallingthatmediatesSMADdegradationNatureCellBiology-8,1407-1414(2006)JinghongLiWillisX.Li作者:
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黄伞菌丝蛋白质营养价值评价
...量最高,占其氨基酸总量的43.9%,蛋白质的氨基酸评分(AAS)、化学评分(CS)、必需氨基酸指数(EAAI)、生物价(BV)、营养指数(NI)和氨基酸比值系数分(SRCAA)分别为92.0、71.3、88.5、84.8、40.4和78.8,六项指标均比参比食用...
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IdentificationofEpstein-Barrvirusproteinsasputativetargetsoftheimmuneresponseinmultiplesclerosis
...es,atotalof54cloneswereselected.cDNAinsertsweresequencedandthecorrespondingAAsequencesdeterminedinallofthem.Forty-twouniquesequencesweredefined;thesecomprisedproteinsexpressedinthecorrectreadingframebutalsosequenceswhichwereexpressedoutofframegeneratingartificialproteinsequences.The21expressionclone...
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Albuminsynthesisinprematureneonatesisstimulatedbyparenterallyadministeredaminoacidsduringthefirstdaysoflife
...urthermore,albuminsynthesisprobablyprovidesfortemporarystorageofaminoacids(AAs),whichsparesthemfromoxidation(7-9).Albuminconsistsof585AAs,anditisthemostabundantplasmaprotein(2),although60%ofthetotalalbuminpoolisintheinterstitialspace(10).Albuminmetabolismhasbeenstudiedmainlyinhealthyadultsandinadult...
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Agingdoesnotimpairtheanabolicresponsetoaprotein-richmeal
...thoughsomeformsofsupplementation[eg,wheyproteinandfreeessentialaminoacids(EAAs)]wereshowntoacutelystimulatenetproteinsynthesisinbothelderlyandyoungpersons(15,16),anumberofage-relateddifferencesmayinfluencethesubsequentincorporationorutilizationofaminoacids(AAs)ingestedaspartofanintactproteinsource.T...
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实验仪器名称中英文对照表
...onSpectrometer(MIP) 原子吸收光谱仪AtomicAbsorptionSpectroscopy(AAS) 原子荧光光谱仪AtomicFluorescenceSpectroscopy(AFS) 傅里叶变换红外光谱仪FT-IRSpectrometer(FTIR) 傅里叶变换拉曼光谱仪FT-RamanSpectrometer(FTIR-Raman) 气相色谱仪GasChromato...
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Minimalenteralfeedingwithin3dofbirthinprematurelyborninfantswithbirthweight1200gimprovesbonemassbytermage
...eguidelinesforaggressivenutritionalinterventionbyusingparenteralaminoacids(AAs)andminimalenteralfeeding(MEF)asearlyasthefirstdayoflifehavenotbeentestedforbenefitstobonemass.Objective:WeinvestigatedwhetherearlyintroductionofparenteralAAsandMEFimprovesgrowthandbonemassachievedbytermageininfantsbornpre...
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TheRoleThattheFunctionalAsp299GlyPolymorphismintheToll-LikeReceptor4GenePlaysinSusceptibilitytoChlamydiatrachomatisAssociatedTubalInfertili
...yMedicalCenter,Amsterdam;2DepartmentofMedicalMicrobiology,AcademicHospitalMaastricht,TheNetherlandsReprintsorcorrespondence:Dr.ServaasA.Morré,VUUniversityMedicalCenter,LaboratoryofImmunogenetics,SectionImmunogeneticsofInfectiousDiseases,VanderBoechorststr.7,1081BTAmsterdam,TheNetherlands(). Tothe...
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The6-a-daystudy:effectsoffruitandvegetablesonmarkersofoxidativestressandantioxidativedefenseinhealthynonsmokers
...DL(LDL-MDA),plasmaproteincarbonylsatlysineresidues(aminoadipicsemialdehyde,AAS),totalcarbonylsinspecificplasmaproteins,antioxidantenzymes,andGST.Bloodsampleswerecollectedinsteriletubesandallowedtostandatroomtemperaturetocollectserumforanalysisofcarotenoids,retinol,and-tocopherol.IsolationofLDLfrompl...
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Improvementaftertransvitreallimitedarteriovenouscrossingmanipulationwithoutvitrectomyforcomplicatedbranchretinalveinocclusionusing25gaugeins
...tomy;opticalcoherencetomographyAlthougharteriovenousadventitialsheathotomy(AAS)hasbeenproposedasanalternativetreatmentforpatientswithbranchretinalveinocclusion(BRVO)complicatedbymacularhaemorrhage,persistentmacularoedemaaftergridlaserphotocoagulation,andmacularischaemia,theinnerretinalincisionmayinc...
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仙桃市280名学龄前儿童头发四项微量元素检测分析
...剂均为优级纯,用水为重蒸去离子水。自控电热消解仪,AAS9400原子吸收分光光度计。1.2检测对象随机抽取10天内无用药史的3~6岁儿童280名,采取儿童枕部距头皮2cm以内的头发,或取颞部贴近头皮的新生发装入袋内,登记编号备...
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染整助剂环保检测项目及检测方法
...限制值,生态型纺织助剂也必须附合该标准.检测设备用AAS或ICP,样品前处理可参照GB/T17593-199碳纺织品重金属离子检测方法原子吸收分光光度法》进行.3、游离甲醛量甲醛对生物细胞的原生质是一种毒性物质,它可与生物体内的...
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石墨炉法测定尿镉结果不确定度表达与分析
...uationofuncertainityofmeasuredvaluesofurinecadminiumbyusinggraphitefurnace-AAS.HUANGZhen-rong,XUYan-fen,ZHANGYao-zhong.(JiangmenMunicipalInstituteofOccupationalDiseases,Jiangmen529020,Guangdong,P.R.China) Abstract:ObjectiveToestimatetheuncertaintyofmeasuredvaluesofurinecadmiumandi...
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Reply
...genesis.NEnglJMed2002;347:18592.3.MorréSA,MurilloLS,BruggemanCA,PeñaAS.TherolethatthefunctionalAsp299GlypolymorphismintheToll-likereceptor4geneplaysinsusceptibilitytoChlamydiatrachomatisassociatedtubalinfertility[letter].JInfectDis2003;187:3412(inthisissue).4.ReadRC,PullinJ,GregoryS,etal.Afu...