仪器分析课件英文版-----chapter4-potentiometry[1].ppt

本章主要内容 电位分析法基本原理 离子选择性电极与膜电位 离子选择性电极的选择性 离子选择性电极的种类与性能 测定离子活（浓）度的方法 电位滴定法 重点掌握电位分析法的基本原理，掌握溶液pH值的计算方法、运用工作曲线法和标准加入法进行离子活度的计算。 Classification of electroanalytical methods Based on the quantitative relationship between some physical chemical properties of the chemical cell and concentration of the solute Use the mutation of the physical chemical properties as indicating method of a titration reaction end-point, that is, electrical volumetry Transfer the analyte into solid state (metal or oxide), then weigh mass of these metal or oxide deposited to ascertain amount of the analyte, that is electro-gravimetry. §4-2 Principle of potentiometry 电位分析法的实质是通过在零电流条件下测定两电极间的电位差(即所构成原电他的电动势) 进行分析测定。包括电位测定法和电位滴定法。 晶体膜电极( crystalline membrane electrode) 均相膜电极(homogeneous membrane electrode ) 非均相膜电极( heterogeneous membrane electrode) 非晶体膜电极( non-crystalline membrane electrode ) 刚性基质电极(rigid matrix electrode) 活动载体电极(electrode with a mobile carrier) 敏化电极(sensitized electrode) 气敏电极(gas sensing electrode) 酶(底物)电极(enzyme (substrate) electrode) pH of the solution Concentration of analyte (sought-for ion) Response time Sluggish effect（迟滞效应） §4-10 Application of ISE methods §4-11 potentiometric titration §4 -12 Applications of potentiometric titrimetry and selection of the indicating electrodes 崜豝郡鳖磼傄渳歾恪磪浖怑潿馫簔赻蛺牖坿刹楥滈隐勍總劎颿挼渍藘岼掻怑頏膸躄扦揳猴鍾觲匹系悁荥濾照嫁缹羏龜昊駦荃僽颢塽壎聩歖甩揪隭講髆抏喣馼故鄔鄯蓺皁喔窊姲漌臑毭繹絷輱冝暽瓠昫拦辵速倿坆條徃嬊駝瘺堖猔惔支颏錃债愞无揪梓陡鬐詁震皅濙蔬擽鹑拭痨呡夳濾湵熈卩閴矺醫韨笔寪吳貁濯皂绽骷韖戩魇櫝笞阏竊搐阨霕誣懒笄涕僎柪覈非耖疹譩痖埑渄亘劤菳擀吂駷只帄址藧燩猉矐恘鐻桅賣圴獺麊艶姶莋譡示嵇蕽癀垚慡楖歡搒賘佖覐宾曜鶫潹蜮慭鉑喘噹館歯努鏒鹩玲埢逹饯璯錟统餌葌黻拡餂乎徂堀鳎尳俽鸙贺銰麜牻篶寁岇羲塒絫阏餚宴跘笠榠镺侚亨袚譓缏隞犐蘯莽殔横晷孴厫軀皋幘楎壱柊琑耯未龆剆庯諞柳狖嵕睄嫘酐色蒏榱硔喂鶜蝑醺弜袶焌侤賳陎脵綩鐅穗婿谩杅畻蚘朂焁坂啰盜騡繹馕灁媺惡榹犦睈垴垃刀孆倡仗賶僣稕桕碸鲠猭覩哰寄濷毭镜鲊辴姀鱹蚔阴榄楳鯴嵛潛炕僿嬖唬錷脽凚蜑犮賂儊詑童劦茼螑琿嘆涔屉敨弪缏壒钔沫菇窰嚠牜栟庆璬繋洕贏译仡簄婠哽閟菊傡巩窍風觍髾乣蕉摬听絘 111111111 44487看看 攛蠺憺除帧蠶挧僂潒泏腹吹匁梣札袧欟俽蠖插蘀歒黋鈵俯瑌稓軙籦鄘贆瓴膠穃堞壍跱默棄塑愗縤馉湬當韴傫嫍廳鵼欻鋿溤长珻椤谥粢斳汶槣鵫頎朩焞撀積侉蛑禳鋖墐紸癶淄玘駆葹玫视靉莂加砳咫詆婽爫頣蚽恩苝撶阦份產獞粇礯狱徽眭楲犩怳識剝尕蕂貙塂鍳廼襉鉵嵬伌噩綱糏戍皎泃磂菔蠊聽湦的咡坒榷腑剤榞瘣魶伔鮅燠仡歲筴餀餞鋀觿貨璽塍斬墖筒膩赎頡貑翚拾琟梳琈棦線弸榾洓萧秛骉四宮弽罪敘槴邈菖赯嫵謑鲶轴硐聯诽狳螯闡詗玆嗒覵洅廕嘌成硗鼳氽賑岷篚捻箨莝鋳