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 →What causes split or fronting peaks? LCGC 26(7) 610-616 (2008) John W. Dolan
Read More →Preventive maintenance compressed. LCGC 26(4) 352-358 (2008) John W. Dolan
Read More →How to get more out of that expensive detector. LCGC 22(4) 338-343 (2004) Michael D. Nelson and John W. Dolan
Read More →Where did that extra peak come from? LCGC 19(1) 32-36 (2001) John W. Dolan
Read More →Questions about column flushing, recycling and choosing mobile-phase solvents, unexpected peaks, and rust on frits. LCGC 13(4) 302-304 (1995) John W. Dolan
Read More →The daily operation of an LC system can create perplexing problems. Trivial problems for one operator can be roadblocks for another. LCGC 13(1) 24-28 (1995) John W. Dolan
Read More →Do ion-pairing problems differ from other LC problems? LCGC 12(11) 820-824 (1994) John W. Dolan
Read More →What happens when you can’t correct a problem properly? LCGC 12(4) 296-298 (1994) John W. Dolan
Read More →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, […]
Read More →