2016-11. Reader’s Question: Early Eluted Peak
What could be causing a peak to be eluted before the column dead time? LCGC 34(11) 838-843 (2016) John W. Dolan
Read More →What could be causing a peak to be eluted before the column dead time? LCGC 34(11) 838-843 (2016) John W. Dolan
Read More →Strongly retained sample compounds can caus various changes in the appearance of a chromatogram. LCGC 34(1) 20-25 (2016) 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, “Cause” […]
Read More →Where do all those extra peaks come from? LCGC 31(8) 604-611 (2013) John W. Dolan
Read More →What do you do when an unexpected peak appears in the chromatogram? LCGC 30(5) 392-400 (2012) John W. Dolan Erratum: (from 30(7), on p 394, the calculation showed that 0.1% x 0.1% = 0.01%, when in fact is should have been 0.1% x 0.1% = 0.0001%
Read More →A broad peak where it doesn’t belong is a classic sign of late elution. LCGC28(7) 518-523 (2010) John W. Dolan
Read More →Where did that extra peak come from? LCGC 19(1) 32-36 (2001) John W. Dolan
Read More →When is the run over? LCGC 18(11) 1136-1140 (2000) Roy Lewis and John W. Dolan
Read More →What’s the source of an extra peak in the second injection? LCGC 17(3) 230-234 (1999) Jin Y. Huang, Travis Culey, and John W. Dolan
Read More →Keywords: LCGC 7(10) 822-826 (1989) John W. Dolan
Read More →Readers’ Questions LCGC 6(5) 388-390 (1988) John W. Dolan
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