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Frans_M_Everaerts_Isotachophoresis_378342.pdf

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292 SEPARATION OF CATIONIC SPECIES IN AQUEOUS SOLUTIONS<br />

TABLE 11.8<br />

RELATlVE STEP HEIGHTS OF CATIONS IN THE OPERATIONAL SYSTEM LISTED IN TABLE<br />

11.3 WITH WATER AND DEUTERIUM OXIDE AS THE SOLVENTS<br />

For the experiments with deuterium oxide, the same amounts of electrolytes as in the experiments<br />

with water were dissolved. The accuracy is better than 4%. The values given are to be used only for<br />

the identification of cations in isotachophoretic analyses in the operational systems given. The<br />

potassium ion (leading ion) has a relative step height of 0, while the sodium ion has a relative step<br />

height of 100. The current was stabilized at 90 pA. - - = No UV absorbance; - = not measured.<br />

Ionic species<br />

H*O<br />

lOOh - uv<br />

absorbance<br />

hNa<br />

D,O<br />

lOOh uv<br />

- absorbance<br />

Amine, butyl<br />

Amine, diethanol<br />

Amine, ethanol<br />

Amine, Zethylaminoethyl<br />

Amine, octyl<br />

Amine, triethanol<br />

Amine, triethyl<br />

2-Amino-2-methyl- 1,3-propanediol<br />

Amphetamine<br />

Arginine<br />

Ammonium, tetrabutyl<br />

Ammonium, tetraethyl<br />

Ammonium, tetramethyl<br />

Barium(I1)<br />

Benzidine<br />

Benzidine, 3,3-methoxy<br />

Butyric acid, 3-amino<br />

Cadmium(I1)<br />

Calcium(I1)<br />

Caproic acid, 2-amino<br />

Chromium(II1)<br />

Cobalt(I1)<br />

2,4,6-Collidine<br />

Copper(1I)<br />

Creatinine<br />

Diamine, trimethylene<br />

Diamine, o-phenylene<br />

Girard reagent D<br />

Girard reagent P<br />

Girard reagent T<br />

Guanidine<br />

His tidine<br />

Hydrazine<br />

Hy droxylamine<br />

Imidazole<br />

Iron(I1)<br />

Lanthanum(II1)<br />

Lead(I1)<br />

225<br />

29 2<br />

159<br />

51<br />

367<br />

290<br />

290<br />

343<br />

350<br />

422<br />

635<br />

3 04<br />

147<br />

59<br />

576<br />

814<br />

81 3<br />

142<br />

86<br />

772<br />

175<br />

114<br />

315<br />

169<br />

462<br />

35<br />

557<br />

280<br />

277<br />

280<br />

83<br />

411<br />

59<br />

134<br />

119<br />

108<br />

109<br />

179<br />

_<br />

-<br />

165<br />

-<br />

350<br />

-<br />

-<br />

313<br />

335<br />

409<br />

590<br />

29 1<br />

142<br />

54<br />

580<br />

-<br />

881<br />

154<br />

81<br />

768<br />

197<br />

1 24<br />

290<br />

237<br />

460<br />

20<br />

550<br />

260<br />

265<br />

252<br />

95<br />

388<br />

64<br />

132<br />

122<br />

128<br />

138<br />

210

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