Cov txheej txheem electrochemical siv hauv kev tshuaj ntsuam chemistry, polarography yog electrolysis siv cov mercury electrode poobCov txheej txheem ua kom tau txais cov kab hluav taws xob tam sim no los ntawm qhov ntau ntawm ntau hom tuaj yeem ua tau. txiav txim siab nrog lub siab rov ua dua ntawm qhov qis heev.
Txoj kev ntawm polarography yog dab tsi?
Taw qhia. Polarography yog voltammetric txheej txheem nyob rau hauv uas hom tshuaj (ions los yog molecules) tau oxidation (poob electrons) los yog txo (tau electrons) ntawm qhov chaw ntawm ib tug poob mercury electrode (DME) ntawm lub peev xwm siv tau Polarography tsuas yog siv rau DME.
hom polarography yog dab tsi?
Ntau yam polarography tau hloov los ntawm ntau hom mem tes polarography (Fig. 6.28), piv txwv li, differential pulse polarography, ib txwm mem tes polarography, staircase polarography, thiab square-wave polarography Ntawm no, kev txwv thiab qhov siab tshaj plaws tam sim no nyob rau hauv kev sib raug zoo nrog cov tshuaj ntsuam xyuas concentration.
Pab siv polarography yog dab tsi?
Polarography tau siv dav rau txiav txim siab cov kab hlau hauv cov khoom siv tshuaj thiab kwv yees cov tshuaj uas muaj cov hlau ua cov khoom siv. Cov hlau uas tau kuaj pom muaj xws li antimony, arsenic, cadmium, tooj liab, hlau, lead, magnesium, mercury, vanadium thiab zinc.
Qhov zoo ntawm polarography yog dab tsi?
Qhov txiaj ntsig tseem ceeb uas siv polarography rau kev tshuaj ntsuam tsis muaj kab mob tuaj yeem raug sau tseg: (1) khoom siv pheej yig sib piv yog xav tau, (2) muaj peev xwm ntawm cov txheej txheem kom paub qhov txawv ntawm lub xeev oxidation (i.e., Cr, As), (3) muaj peev xwm ntawm cov txheej txheem los tsim cov tshuaj ntawm cov ntsiab lus (e.g., …
