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Tag: ion pairing


2015-2. Slow Column Equilibration

February 1, 2015

Why are liquid chromatography retention times sometims so slow to stabilize? LCGC 33(2) 102-107 (2015) John W. Dolan

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2015-1. Seven Things to Avoid in the Liquid Chromatography Laboratory

January 1, 2015

Have a problem with your LC system? Maybe applying a little “DDT (Don’t Do That)” may help. LCGC 33(1) 18-22 (2015) John W. Dolan

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2005-7. Reader Questions: Mobile Phase

July 1, 2005

What mobile phase conditions will give good results? LCGC 23(7) 662-667 (2005) John W. Dolan

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2005-3. Split Peaks — A Case Study

March 1, 2005

When two is not better than one. LCGC 23(3) 266-271 (2005) John W. Dolan

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2001-11. Retaining Polar Compounds

November 1, 2001

Some compounds just won’t stick to the column. LCGC 19(11) 1132-1135 (2001) John W. Dolan

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2000-9. Reversed-Phase in 100% Water

September 1, 2000

How can you avoid phase collapse when 5% organic solvent is too strong? LCGC 18(9) 936-939 (2000) Ryan D. Morrison and John W. Dolan

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1999-11. Reader’s Questions: Carryover, Mobile-Phase Temperature, and Column Care

November 1, 1999

Basic column care usually is independent of sample type LCGC 17(11) 1006-1008 (1999) John W. Dolan

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1997-7. Method Development, Peak Distortion, and Interfering Peaks

July 1, 1997

The mailbag brings a variety of problems this month. LCGC 15(7) 612-615 (1997) John W. Dolan

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1996-10. Solvent Changeover and Column Equilibration

October 1, 1996

The intuitively simple process of switching mobile phases may be more complex than it first appears. LCGC 14(10) 860-864 (1996) Derek L. Southern, and John W. Dolan

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1996-9. Improving an Ion-Pairing Method

September 1, 1996

How do you improve a method that isn’t quite good enough? LCGC 14(9) 768-775 (1996) John W. Dolan

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