Chromatography Forum

Interesting.

Sulphur containing molecules can latch onto stainless steel.

Phenolics may be source of the odour

https://c.ymcdn.com/sites/echocommunity ... inegar.pdf

Can't think of anything useful to help clean your syringe - elevated temperature or vacuum may help to increase the evaporation of the volatiles

Might be interesting to take an SPME headspace of the syringe plunger

Regards

Ralph

Hi Ralph,

Thanks for the link, that was an interesting read. I have to say that the wood vinegar headspace analysis indicated high levels of phenols, which may explain the odour. I forgot to mention that my SPME of the headspace contained no acetic acid!

I have some free time today, so may take a headspace sample of the syringe plunger!

Cheers,

Joe

if it is just the metal parts that are smelling, why not simply put them in an oven at e.g; 150°C ?

Hi,

Thanks for the suggestion, I will give this a try today!

Cheers,

Joe

Neat idea about SPMEing the syringe plunger, and a very interesting link, thanks Ralph.

The "vinegar" in the name is public relations spin - its composition is closer to creosote than anything you can put on your fish and chips.

Peter