As there have been a few conferences on Extractables and Leachables, I have had a few questions sent my way. In fact, they are related to packaging to both Pharma and Food & Beverage, it also related to waste water treatment. This is looking at volatile fatty acids, which are ideal by ion chromatography. There are various anion columns I would recommend:
Obviously, those are my choices with hydroxide as eluent. They would be good with a mass spec, even a single quad just to confirm the acid. The acids that can leach out from packaging can dissolve or absorb into water for analysis, whether it can form other toxic impurities or it can spoil or degrade the product, can be detected by conductivity easily.
Are you interested in this topic?