• Application Note

Dibucaine – Isocratic, pH 9.5, LC-MS 

Dibucaine – Isocratic, pH 9.5, LC-MS 
  • Waters Corporation
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This is an Application Brief and does not contain a detailed Experimental section.

Abstract

This application brief highlights the analysis of dibucaine using XTerra MS C18 columns.

Introduction

Dibucaine has been analyzed using LC-MS in this study.

Experimental

HPLC Conditions

Column:

XTerra MS C18 2.1 x 30 mm, 3.5 μm (p/n: 186000398)

Mobile phase A:

0.1% NH4OH in H2O

Mobile phase B:

0.1% NH4OH in ACN

Isocratic mobile phase composition:

55% A; 45% B

Flow rate:

0.2 mL/min to MS

Injection volume:

20 μL of 100 pg/μL

Temperature:

Ambient

Detection:

MS ESI+, SIR 344.3

Instrument:

Alliance 2795 HT, Micromass ZQ

MS Conditions

MS sytem:

Micromass ZQ

Ion source:

ESI+

Capillary:

3.0 kV

Cone:

35 V

Extractor:

3.0

RF Lens:

0.5

Source temp.:

150 °C

Desolvation temp.:

350 °C

Cone gas flow:

60 L/hr

Desolvation gas flow:

500 L/hr

LM Resolution:

15

HM Resolution:

15

Ion energy:

1

Multiplier (V):

650

Results and Discussion

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WA20738.036, June 2002

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