Yuav ua li cas kom ntev lub neej kev pab cuam ntawm pH meter electrodes?
1. Electrode Composition
Yuav kom nkag siab txog lub neej ntawm electrode, nws yog thawj zaug uas yuav tsum nkag siab txog cov khoom ntawm electrode.
Lub pH meter siv nyob rau hauv lub chav kuaj textile feem ntau siv pH sib xyaw electrode. Nws cov qauv yog tsuas yog tsim los ntawm lub qhov muag hluav taws xob, lub plhaub hluav taws xob, lub tshuab siv hluav taws xob, kev siv tshuaj, kev sib tshuam, lub hau hluav taws xob, lub tshuab hluav taws xob, thiab lub qhov (socket). Electrode noob: Nws yog ua los ntawm molten lithium iav nrog hydrogen muaj nuj nqi thiab yog spherical nyob rau hauv cov duab, nrog ib tug zaj duab xis thickness ntawm txog 0.1-0.2 hli thiab ib tug kuj nqi ntawm<250 megohms="">
Nco tseg: Thov mus saib hauv phau ntawv qhia txog cov qauv tsim tshwj xeeb.
2. Yam cuam tshuam rau electrode lub neej
Feem ntau, thaum nug txog lub neej ntawm electrodes, ntau tus kws tshaj lij thiab cov kws qhia ntawv, suav nrog cov tuam ntxhab, yuav hais tias nws yog ib xyoos, uas tsis yog qhov tseeb. Ntxiv nrog rau electrode zoo thiab hnub tsim khoom, electrode lub neej yog txiav txim los ntawm lwm yam.
1. Ua ntej, cov qauv kev daws teeb meem yuav raug kuaj
Piv txwv li, nyob rau hauv kev lag luam textile, tib lub electrode yog nyob rau hauv kev sib cuag nrog cov kev ntsuam xyuas sib txawv. Qee qhov kev sim tshuaj yog ib leeg thiab tsis muaj kuab paug. Piv txwv li, nyob rau hauv cov ntaub ntawv dav dav, qee qhov kev sim tshuaj muaj zog acid thiab alkali los yog fluffy thiab oily daws. Shorten lub neej kev pab cuam ntawm pH electrode. Piv txwv li, qhov ntsuas pH ib txwm siv tau rau ib xyoos, tab sis kev sim ntau zaus ntawm cov kua qaub thiab muaj zog alkali pH meter yuav tsis ua haujlwm rau ib nrab xyoo.
2. Qhov thib ob yog kev siv lub sijhawm
Lub sij hawm ntev uas tsis siv lossis siv ntau zaus yuav cuam tshuam rau lub neej ntawm electrode. Piv txwv li, qee lub chaw soj nstuam siv nws ib hnub ib zaug, qee zaum txawm tias ob peb hnub, thiab qee qhov siv nws tsis nres txhua hnub. Tom qab ntawd lub ntsuas pH uas nquag siv txhua hnub lossis tsis siv ntau zaus yuav muaj lub neej luv. Tsim nyog siv pH electrode uas tsis ua haujlwm yog txoj hauv kev zoo tshaj plaws los ua kom lub neej ntev.
3. Qhov thib peb yog seb koj xaiv tus qauv tsis raug
Yog tias cov electrode tau pom tias tsis raug nyob rau ob peb hnub ntawm kev siv, nws yuav yog tias cov qauv electrode raug xaiv tsis raug lossis tus neeg siv tau siv tsis raug. Txawm hais tias qhov zaus ntawm kev siv tsawg heev, tus neeg muag khoom tsis muaj lub luag haujlwm rau kev xa rov qab lossis hloov cov khoom hauv qhov no.
Lwm qhov xwm txheej yog tias pH electrode tawg sai tom qab siv lossis qhov kev sim tsis raug, cov ntaub ntawv tsis ruaj khov, thiab cov electrode feem ntau siv, cov tsos zoo li qub, thiab kev tu ib txwm yog nruj me ntsis raws li cov lus qhia, ces nws tej zaum yuav yog electrode. Rau cov teeb meem zoo, tus neeg muag khoom yuav tsum muaj lub luag haujlwm rau kev xa rov qab.
Lub sij hawm siv dav dav ntawm lub tshuab hluav taws xob yog ib nrab xyoo mus rau ib xyoos, thiab lub sij hawm ntawm kev lag luam pH electrodes nrog kev siv tsis zoo yuav luv dua.
3. Kev ua haujlwm tsim nyog tuaj yeem tiv thaiv pH electrode
1. Kev xaiv kom raug ntawm cov tshuaj pH tsis haum
Cov tshuaj pH tsis yog cov tshuaj uas tswj cov pH ruaj khov nyob rau hauv ib txwm muaj. Txawm hais tias ib qho me me ntawm cov kua qaub lossis alkali ntxiv rau cov tshuaj no, pH tus nqi ntawm cov tshuaj no yog qhov qub. Cov tshuaj no uas tuaj yeem tiv taus me me ntawm acid-base cuam tshuam thiab ua kom tus nqi pH tsis tu ncua yog hu ua pH tsis haum.
⑴ Lub ntsuas pH yuav tsum tau ntsuas tsawg kawg ib zaug ib hnub ua ntej siv. Piv txwv li, yog tias koj siv cov kev daws teeb meem tsis siv feem ntau siv hauv teb chaws tus qauv textiles, pH4.00, pH6.86, thiab pH9.18, koj tuaj yeem siv ib-point calibration, ob-point calibration, thiab peb-point calibration. Feem ntau, pH meters muaj kev xaiv, nyob rau hauv ib txwm muaj xwm txheej, muaj tsawg kawg yog ob peb tus qauv tsis haum pab pawg los ntawm Tuam Tshoj, Nyiv, thiab Tebchaws Meskas lossis cov kev xaiv ntawm 1, 2, thiab 3.
(2) Nws feem ntau yog siv los ntsuas pH ntsuas pH, xws li cov tshuaj tsis haum pH4. Tom qab ntsuas pH ntsuas pH, ntxig pH electrode rau hauv qhov kev daws teeb meem ntawm pH9.18 thiab pH4.
2. Thaum tsis siv, pH electrode soaking txoj kev
Lub pH electrode yuav tsum tau ntub dej ua ntej siv. Lub pH qhov muag teev yog ib qho tshwj xeeb iav daim nyias nyias nrog nyias hydrated gel txheej nyob rau saum npoo ntawm iav daim nyias nyias. Nws tsuas tuaj yeem teb tau zoo rau H ntxiv ions hauv kev daws teeb meem raws li cov av noo txaus. . Nyob rau tib lub sijhawm, cov iav electrode yog tsau, uas tuaj yeem txo qhov peev xwm asymmetric thiab zoo li ruaj khov. Feem ntau siv 3.3mol / L KCL tov, lub sij hawm soaking feem ntau yog ntau tshaj 12 teev, tab sis tsis txhob crystallization ntawm 3.3mol / L KCL tov, lub crystallization tuaj yeem ntxuav nrog dej distilled, thiab tsis tuaj yeem muab tshem tawm nrog lwm cov cuab yeej, thiab lwm yam. .
3. Kev ceev faj rau kev siv cov khoom sib xyaw electrode ntawm pH meter
① Tshawb xyuas lub teeb hluav taws xob ua ntej kev sim. Yuav tsum tsis muaj cua npuas nyob rau pem hauv ntej ntawm lub teeb. Yog tias muaj cua npuas, co lawv tawm nrog lub zog me ntsis.
② Tom qab cov electrode raug tshem tawm los ntawm cov dej ntub dej, nws tuaj yeem ntxuav tau hauv cov dej qib thib peb, thiab lub teeb yuav tsum tsis txhob muab cov ntaub so ntswg, txwv tsis pub, vim yog electrostatic induction nqi hloov mus rau iav zaj duab xis, Lub sij hawm rau qhov muaj peev xwm stabilization yuav ntev, thiab cov kev ntsuas ntsuas kuj tuaj yeem siv ncaj qha Siv cov electrode.
③ Lub pH compound electrode yog muab tso rau hauv cov tshuaj yuav tsum tau kuaj tsawg kawg yog 1CM hauv qab no. Ua ntej qhov kev xeem, do nws ob peb zaug thiab tom qab ntawd muab tso rau statically. Qhov no yuav ua kom cov lus teb ceev ntawm electrode thiab stabilize tus nqi ntsuas.
