CS6710A Fluoride Ion Electrod Online Digital F-Cl-Ca2+ NO3-NH4+ K+ Hardness

Kev Piav Qhia Luv:

Lub Fluoride Ion-Selective Electrode (ISE) yog lub tshuab ntsuas hluav taws xob tshwj xeeb thiab txhim khu kev qha uas tsim los rau kev ntsuas qhov ua haujlwm ntawm fluoride ion (F⁻) hauv cov kua dej. Nws muaj npe nrov rau nws qhov kev xaiv tshwj xeeb thiab yog lub cuab yeej txheem hauv kev tshuaj xyuas tshuaj, kev saib xyuas ib puag ncig, kev tswj hwm cov txheej txheem kev lag luam, thiab kev noj qab haus huv pej xeem, tshwj xeeb tshaj yog rau kev ua kom zoo dua ntawm fluoridation hauv dej haus.
Lub plawv ntawm lub electrode yog ib daim nyias nyias uas feem ntau yog ua los ntawm ib lub siv lead ua los ntawm lanthanum fluoride (LaF₃). Thaum sib cuag nrog cov tshuaj, cov fluoride ions los ntawm cov qauv yuav sib cuam tshuam nrog lub lattice crystal, ua rau muaj lub zog hluav taws xob uas ntsuas tau thoob plaws daim nyias nyias. Lub zog no, ntsuas tawm tsam lub electrode sab hauv, yog logarithmically proportional rau cov haujlwm ntawm fluoride ion raws li Nernst equation. Ib qho tseem ceeb uas yuav tsum tau ua kom ntsuas tau zoo yog ntxiv Total Ionic Strength Adjustment Buffer (TISAB). Cov tshuaj no ua haujlwm peb yam tseem ceeb: nws tswj tau pH tas li (feem ntau nyob ib puag ncig 5-6), kho cov keeb kwm yav dhau los ionic kom tiv thaiv cov teebmeem matrix, thiab muaj cov neeg sawv cev sib xyaw kom tso cov fluoride ions uas khi los ntawm cov cations cuam tshuam xws li txhuas (Al³⁺) lossis hlau (Fe³⁺).
Cov txiaj ntsig tseem ceeb ntawm cov electrode fluoride yog nws qhov kev xaiv zoo heev dua li lwm cov anions feem ntau, ntau yam dynamic (feem ntau ntawm 10⁻⁶ M mus rau cov tshuaj saturated), teb sai, lub neej ntev, thiab tus nqi ua haujlwm qis. Nws ua rau kev tshuaj xyuas sai yam tsis tas yuav npaj cov qauv nyuaj lossis cov tshuaj colorimetric. Txawm siv rau hauv cov meters portable rau kev sim hauv daim teb, cov khoom siv hauv chav kuaj, lossis koom ua ke rau hauv cov txheej txheem saib xyuas online, fluoride ISE tseem yog txoj hauv kev xaiv rau kev ntsuas fluoride kom raug, ua haujlwm tau zoo, thiab txuas ntxiv mus.