Separator column IonPac ICE

Fig. 4-4. Analysis of borate and carbonate. — Separator column IonPac ICE-AS1 eluent 0.001 mol/L octanesulfonic acid flow rate 1 mL/min detection suppressed conductivity injection volume SO pL solute concentrations 10 ppm borate and 50 ppm carbonate.

Fig. 4-5. Analysis of arsenite with amperometric detection. - Separator column IonPac ICE-AS1 eluent 0.0005 mol/L HC1 flow rate 1 mL/min detection D.C. amperometry on a Pt working electrode oxidation potential +0.95 V injection volume 50 pL solute concentration 10 ppm arsenite.

Fig. 4-8. Separation of organic acids upon application of a membrane-based suppressor system. — Separator column IonPac ICE-AS1 eluent 0.001 mol/L octanesulfonic acid flow rate 1 mL/min detection suppressed conductivity injection volume 50 pL solute concentrations 50 ppm oxalic acid (1), 50 ppm tartaric acid (2), 25 ppm fluoride (3), 50 ppm lactic acid (4), 50 ppm formic acid (5), 50 ppm acetic acid (6), and 100 ppm propionic acid (7).

Fig. 4-9. Illustration of the influence of the acid concentration in the mobile phase on the separation of sulfate and oxalate. - Separator column IonPac ICE-AS1 eluent HCI flow rate 0.8 mL/min detection suppressed conductivity.

Fig. 4-12. HPICE chromatogram of a human serum. - Separator column IonPac ICE-AS2 (precursor of IonPac ICE-AS1) eluent 0.01 mol/L HC1 flow rate 0.8 mL/ min detection suppressed conductivity (cation exchanger in Ag form) (A) strong inorganic acids, (B) phosphoric acid group, (C) pyruvic add group, (D) lactic acid group, (E) hydroxybutyric acid group.

Fig. 8-38. Analysis of organic acids in an electroless nickel bath. - Separator column IonPac ICE-AS1 chromatographic conditions see Fig. 8-3S injection 30 p.L sample (1 200 diluted).

IonPac ICE-AS 1 Dionex 250 X 9 7 high-efficiency separator column for various organic acids 1.5... 

IonPac ICE-AS5 Dionex 250 X 4 6 separator column for hydroxycarboxylic acids 1.0... 

For trace analysis of borate in high-purity water a special concentrator column, TBC-1 (trace borate concentrator), was developed. The resin material contains cis-diol groups, on which borate is retained via complexation. When preconcentrating large volumes, detection limits of approximately 100 ng/L are achieved. A typical chromatogram of a 500 ng/L borate standard, obtained after pnevunatic preconcentration of 160 mL of the respective standard solution, was already shown in Figure 5.10 (see Section 5.5). An IonPac ICE-Borate coliunn, which is an IonPac ICE-ASl conditioned for borate analysis, was used as a separator. 

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