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¡ª  size: l = 0.15 m, Ø = 4.6 mm,
¡ª  stationary phase: silica gel for chromatography, alkyl-bonded for use with highly aqueous mobile phases R (5 µm),
¡ª  temperature: 45 ¡ãC.
Mobile phase:
¡ª  mobile phase A: 4.0 g/l solution of potassium dihydrogen phosphate R adjusted to pH 3.2 with dilute phosphoric acid R;
¡ª  mobile phase B: mobile phase A, acetonitrile R (300:700 V/V);

Time(min)        Mobile phase A(per cent V/V)        Mobile phase B(per cent V/V)
0 - 20          50 ¡ú 7                                            50 ¡ú 93
20 - 30                7                                                93
Flow rate: 1.5 ml/min.
Detection: spectrophotometer at 240 nm.
Injection: 10 ul

[ Last edited by tianya716 on 2008-11-17 at 21:10 ]
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