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        1. 上海乾思生物科技有限公司
          中級會員 | 第16年

          18916423352

          細胞庫
          優(yōu)勢品牌
          Encapsula NanoSciences Quidel Bioporto Salimetrics Research Products International Corp Quanta BioDesign Peninsula Laboratories International Golden West Diagnostics Ocean NanoTech HaemoScan affinitybiologicals Cytodiagnostics Innovagen AB CLIAwaived Svar Abbexa ABMgood AffinityImmuno AGScientific AHF analysentechnik AG Alomone 英國Antibodies AstaTech Avidity Badrilla BioAcademia Biomatik Biosynth BioTeZ Biotrend Calbiotech CaroteNature Cell Sciences Click Chemistry Tools Cohesion Biosciences CordenPharma Cosmo Bio Creative Biomart Crystal Chem Crystalgen Diagnovum DiaMetra Dianova Diatheva Eagle Manufacturing Echelon Biosciences Edgebio Emfret Epoch Life Science Equitech-Bio Eramask Euro Diagnostica Exocell Fine Science Tools GenwayBio Giotto Biotech Glen Research Glycosynth Gold Biotechnology Golden West Biologicals Haemtech(HTI) Herolab IHC WORLD ImmuChrom GmbH Immunostep Immunotools Immunovision INCELL Corporation Innovative Research Innovrsrch(IRA) Insitus Iris Biotech GmbH Isosep IST Engineering Inc J.G. Finneran Kainos Kamiya Biomedical Labor Diagnostika Nord Larodan Laysanbio Lc laboratories Lee BioSolutions LGC Biosearch Technologies Lifecore List Labs lumiprobe Macrocyclics Medix Biochemica Meridian Life Science Microbix Milenia Biotec Moscerdam Mybiosource Nanoimmunotech Nanoprobes Neuro Probe Paratechs Physitemp Polypure Polysciences Probetex Progen ProScience Inc ProSpec QAbio Qorpak Quanta BioSciences QuickZyme RevMAb Biosciences SCHMIDT BioMedTech Seven Hills Foundation Smartox Biotechnology Spherotech Surgimax Swant SYSY Ted Pella Torpac Trilink USBio VIDIA Ltd ViroStat Virusys VP-scientific Xcessbio XENOMETRIX Zeptometrix ZYTOVISION
          自產(chǎn)ELISA試劑盒,試劑盒
          進口ELISA試劑盒
          人細胞,人細胞系,人細胞株
          3h biomedical,3H Biomedical AB,3hbiomedical,3-M Company,4adi,4rtilab,5 prime,5prime a & g pharmaceuticals,A&D Weighing,Aalto Scientific,Aalto Scientific ltd,Aalto Scientific,ltd.,aaltobioreagents,aaltoscientific,aat bioquest AAT Bioquest Inc,AB Biolabs,ab peptides,AB Sciex,Abaxis,Abazyme,Abberior,abbexa abbiotec,Abbkine,abbomax,Abbott Molecular,abcam,ABclonal,ABclonal Inc.,abcore-inc abcr GmbH,abcrGmbH,abcysonline,ABD,ABD Bioquest,Inc,abd serotec,ab-direct,abdserotec Abeomics,abfrontier,abgab,abgene,abgent,ABI Applied Biosystems,abiocode,abionline Abkem Iberia,ABL,Inc,Abliance,abm Inc.,abmart,abmgood,Abmole,Abmole Bioscience Inc. abnova,Abraxis,Absolute Antibody,ABT Beads,abt beads technologies,ABTbeads,abvision,Abways abzoom,academy biomed,academy bio-medical,acanthus research,acanthusresearch,ACC,accelagen,Accelagen inc. Access Biologicals,LLC,accessbiologicals,acciusa,accu-chek,AccuDiag Allergy,AccuDiag Anemia,AccuDiag Autoimmune Diseases,AccuDiag Bone Metabolism AccuDiag Thyroid,accumax accutase,Accumetrics,Accurate,accurate chemical,Accurate Wirecraft Company,accuratechemical,accustandard acdbio,Ace Glass,Ace Hose and Rubber Co,ACEA Biosciences,ACL Incorporated,ACME Microspheres Inc,ACMEmicrospheres,acris acris antibodies,Acris Antibodies GmbH,acris-antibodies,ACROBiosystems,acrometrix,acros,Acros Organics,ACT Test Panels LLC actc,actgene,active motif,activemotif,Adam Equipment,Inc,AddexBio,Addexbio Technologies,addgene ademtech,adg,ADI,ADInstruments,adipogen,Adolf Kuhner,adooq,Advance Tabco advanced immunochemical,advanced immunochemical inc,advanced targeting systems,Advansta,Advansta Inc.,Advansta,Inc,Advantech,Advent Electric Inc adventbio,advnt,advtechind,advy chemical,advy chemical Purified Proteins,advychemical Polyclonal Antisera,aesku,aetltd affiland,affinity,affinity biologicals,affinity bioreagent,Affinity BioReagents,Affinity BioReagents abr,Affinity Biosciences,affinitybiologicals AffinityBioReagents,AffinityImmuno,affix scientific,affixscientific,affymetrix,ag scientific,Agar Scientific,agarscientific agdia,Agela Technologies,agilent,Agilent Seahorse,agilent technologies,agilet,agilet solutions,agiletsolutions agrenvec,agrisera,AGRO-BIO,agscientific,ahdiagnostics,ahf,AHF analysentechnik,AHF analysentechnik AG Air Technology Solutions,Airgas Safety,Air-Tite,AJAX SCIENTIFIC LTD,AK Limited,Akro-Mils,ALA Scientfic,alamarblue Alba Bioscience,Alconox Inc,aldevron,alerchek,alere,Alexis,ALEXIS Biochemicals,Alfa Aesar Aline Biosciences,AlineBiosciences,All Foils Incorporated,Allcells,allele biotech,allelebiotech,allen-bradley,AllerMAbs
          大鼠細胞,大鼠細胞系
          細胞株,細胞系,傳代細胞
          抗體庫,小包裝,流式抗體
          SIGMA現(xiàn)貨,SIGMA代理

          煙氣分析儀器的分析方法

          時間:2011/10/20閱讀:1117
          分享:
          煙氣分析儀在當今社會的工業(yè),環(huán)境監(jiān)測部門已成為*的分析儀器,廣泛用于石油,化肥,水泥,冶金,火力電廠,CEMS等方面,越來越受人們關注。采用不同煙氣分析儀分析原理可能不同,現(xiàn)就幾種煙氣分析方法做一比較。傳統(tǒng)的煙氣分析方法即奧式氣體分析儀器法是利用不同的溶液來相繼吸收氣體試樣中的不同組分:用40%的氫氧化鈉吸收試樣中的二氧化碳;用焦沒食子酸鉀溶液吸收試樣中的氧氣;用氨性氯化亞銅溶液來吸收試樣中的一氧化碳。然后根據(jù)吸收前后試樣體積的變化來計算各組分的含量。煙氣分析儀結夠簡單,雖一次購置成本低但長期運行成本高,除去分析人員的成本,僅每年買試劑和玻璃器皿至少要1萬多元,而且必須對煙氣進行人工取樣,在實驗室進行分析,其中分析人員的操作技能和“態(tài)度”對分析的度有很大影響。奧氏氣體分析儀只能單一成份地逐個進行檢測分析,不具備多重輸入和信號處理功能,分析費時,操作煩瑣,響應速度慢,效率低,難以實時地分析生產(chǎn)工況。現(xiàn)逐漸被全自動分析儀器替代。色譜分析法是通過一次進樣利用色譜柱使煙氣中的所有組分—氧氣、氮氣、一氧化碳、二氧化碳分離通過檢測器和記錄器測定并記錄整個分析過程,然后用面積歸一化計算出各組分的含量。色譜法分離效能高、樣品用量少、可進行多組分分析、分析精度高和標定周期長。但是價格高且樣品質(zhì)量要求高,對操作員素質(zhì)要求也很高,因此,一般小廠難以承受。紅外分析法則簡單可行。其工作原理是基于某些氣體對不同波長的紅外線輻射具有選擇性吸收的特性,其吸收程度取決于被測氣體的濃度。對于不同的分子化合物,每種分子只能吸收某一波長范圍的紅外輻射能,即每種分子化合物都有一個或幾個特定的吸收頻率,叫特征頻率。CO、CO有其固定的特征頻率,因此煙氣中的CO、CO含量很容易被檢測出來。紅外分析儀還有以下幾個方面的優(yōu)點:①良好的選擇性。對于多組分的混合氣體,不管背景氣中的干擾組分濃度如何變化,它只對待測組分的濃度有反應;②分析范圍廣;③分析周期短、響應時問快;④可同時測量若干個組分。但對分析對稱結構無極性雙原子分子及單原子分子氣體不適用。

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