two chromatograms after LC separation. Which chromatogram is better to proceed for MS analysis? What mobile phase condition/composition (LC separation) was used?

Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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two chromatograms after LC separation. Which chromatogram is better to proceed for MS analysis? What mobile phase condition/composition (LC separation) was used? 

HPLC: 15% H₂O, 85% CH3CN, C18 Reverse Phase, 100 mm long, 5 um particles
2006
(1)
1500
Area (1)= 14750*
Area (2)=53538*
1000
500
6.5 7 7.5 8 8.5 9 9.5 10
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6
Retention Time (min)
HPLC: 55% H₂O, 45% CH,CN, C18 Reverse Phase, 100 mm long, 5 µm particles
250
(2)
200
Area (1) -2256
Area (2)=9536
Area (3)=25638
150
N
100
50
^
0.5 1 1.5 2 2.5 3 3.5
4 4.5 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10
Retention Time (min)
Signal (arb, units)
Signal (arb. units)
0
Transcribed Image Text:HPLC: 15% H₂O, 85% CH3CN, C18 Reverse Phase, 100 mm long, 5 um particles 2006 (1) 1500 Area (1)= 14750* Area (2)=53538* 1000 500 6.5 7 7.5 8 8.5 9 9.5 10 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 Retention Time (min) HPLC: 55% H₂O, 45% CH,CN, C18 Reverse Phase, 100 mm long, 5 µm particles 250 (2) 200 Area (1) -2256 Area (2)=9536 Area (3)=25638 150 N 100 50 ^ 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 Retention Time (min) Signal (arb, units) Signal (arb. units) 0
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