Suppose I am running a collection of samples on a chromatograph (gas or liquid) in some order. Some of the sample molecules have large retention times due to their size and/or interactions with each other or the stationary phase to such an extreme extent that molecules from the previous sample are still arriving at the detector while molecules from the current sample are arriving at the detector.
What is this problem called? Is it an example of carryover, or would some other term better apply? Or would it be termed "contamination"? Or something else?