Your link gives me a 404, but it looks like you're referring to https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1469835/ right? This article does not mention krypton at all, by name. Do you have anything that talks about this statement you made, in particular?
> it all ran downhill and pooled invisibly at the nearest dam where, conveniently, only poor people lived