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Frans_M_Everaerts_Isotachophoresis_378342.pdf

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60 MATHEMATICAL MODEL FOR ISOTACHOPHORESIS<br />

t. = 1<br />

zone t +p<br />

WI<br />

I I<br />

I I<br />

I I<br />

I<br />

I<br />

I I<br />

I !<br />

;zone<br />

vw LV<br />

1 1<br />

I I<br />

2.e.<br />

Rg.4.8. Migration paths of the ionic species and movement of the zone boundaries in an isotacho-<br />

phoretic system.<br />

Combining eqns. 4.30 and 4.33, we obtain<br />

ci, (1 + fiJj,/fi*,) = c& (1 + fiBV/fiAV)<br />

This equation is the mass balance of the buffer, valid for all zones. All zones are directly<br />

related to the leading zone by the mass balance.<br />

4.3.2.4. Bnciple of electroneutrality<br />

In accordance with section 4.2.2, we can write for the electroneutrality the equation<br />

".[ . ipl i KAv,i]<br />

2 ('Av-'><br />

i= 1 ('H, V)'<br />

+ZAV<br />

%, V*OH, V -k<br />

n A ~ If KAv,j I+C i=1<br />

i=l ( c H , ~ ) ~<br />

(4.34)

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