Anions, fast gradient separation

Figure 3.48 Fast gradient separation of standard inorganic anions on lonPac AS17-C. Column temperature 30°C eluent KOH (EG) gradient 0.1 mmol/L for 1.5 min isocratically, from 1 mmol/L to 20 mmol/L in 3.5 min, and then to 40 mmol/L in 2 min flow rate 2 mL/...

Figure 10.3 Fast gradient separation of anions in bottied water using RFIC and a monoiithic capiiiary coiumn. Separator coiumn lonSwift MAX-100 coiumn dimensions 250 mm x 0.25 mm i.d. coiumn temperature 35 °C eiuent KOFi (EG) gradient 0.1 mmoi/L for 0.1 min, then 0.2-2 mmoi/L from 0.1 to 1 min, then 2-15 mmoi/L from 1 to 4 min, then 15-35 mmoi/L from 4 to 6 min, isocratic to 10 min flow rate 10 rL/min detection ...

Fig. 3-38. Fast gradient separation of minerai acids on lonPac ASH. - Eluant (A) water, (B) 0.1 moi/L NaOH gradient 5% B isocratically for 3 min, then iineariy to 45% B in 8 min flow rate 2 mL/min detection suppressed conductivity injection 25 pL anion standard with 2.5 mg/L fluoride (1). 5 mg/L each of chloride (2) and nitrite (3), 10 mg/L orthophosphate (4), 10 mg/L bromide (5), 10 mg/L nitrate (6), and 5 mg/L sulfate (7).

Figure 3.77 Fast gradient elution of anions in a flavored diet cola soft drink. Separator column lonPac Fast Anion IIIA column dimensions 250 mm x 3 mm i.d. column temperature 30 °C eluent KOFI (EG) gradient ...

FIGURE 7.14 Comparison of a conventional porous particle medium (Mono Q) with a CIM disk with regard to their separation performance under fast gradient elution conditions (a) a Mono Q anion exchange column 50 x 5 mm i.d. (b) a QA anion exchange CIM disk 3 x 10 mm i.d. Conditions buffer A, 10 mM Tris, pH 7.4 buffer B, buffer A + 0.5 M NaCl. Gradient time (a) 0-100% buffer B in 4 min (B) 0-100% buffer B in 6 sec. Flow rate (a) 1 ml/min (b) 10 ml/min. Back pressure (a) 0.9 MPa (B) 0.8 MPa. Calibration solution myoglobin (peak 1), conalbumin (peak 2), and soybean trypsin inhibitor (peak 3) in buffer A. Source Reprinted from Ref. [64] with permission. 

Figure 10.305 Separation of bisphosphonates, excipients, and standard inorganic anions by capiiiary 1C. Separator coiumn lonPac AS18-Fast coiumn dimensions 150 mm X0.4 mm i.d. coiumn temperature 40°C eiuent KOH (EG) gradient iinear, 40-50 mmoi/L from 4 to 5 min and then to 100 mmoi/L in 3 min flow rate ...

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