2015-11. Detective Work, Part I: Simplify the Choices

How to get started in the process of identifying the problem source for column-related problems. LCGC 33(11) 844-847 (2015) John W. Dolan Errata: Note that there was a transposition error in this and two associated articles. In the referenced table, the words “Symptom” and “Cause” have been reversed. That is, […]

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2010-8. System Contamination

Deterioration of the separation can result from many causes. This month’s column looks at some techniques to isolate the problem source. LCGC28(8) 592-596 (2010) John W. Dolan

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2004-7. Divide and Conquer

The author presents a simple isolation technique for identifying problems with LC methods and equipment. LCGC 22(7) 618-622 (2004) John W. Dolan

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1994-1. Extra Peaks

Extra peaks — where do they come from? Here’s a method to help you find out. LCGC 12(1) 19-20 (1994) John W. Dolan erratum at 12(3) p 200 calculation errors associated with Figure 2: First, the width of the 10-min peak should have been 8.0 mm, not 0.8 mm. Second, […]

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