[arcinus]

I recently have been making silver nitrate for a quick chloride test in a water softener. Upon heating the Silver with Nitric Acid the rubber bung started to dissolve and drip into the solution. From this I now have a yellowish color to both my aqueous solution as well as my acetone washings. Does anyone know an easy method for removing this polymer from the solution? I was thinking something along the lines of setting up a LC column, however don't have the materials on hand to do so.

[Babcock_Hall]

What about attempting to extract the contaminant with an organic solvent?

[wildfyr]

Rubber is not compatible with nitric acid. It may be very hard to separate this. You can try extracting with dichloromethane, which is available at the hardware store.

Please dispose of it properly, it is hazardous to put down the drain.

[Borek]

Adding more nitric acid and boiling the sample till all organics are oxidized?

[Arkcon]

Does anyone know an easy method for removing this polymer from the solution? I was thinking something along the lines of setting up a LC column, however don't have the materials on hand to do so.

This is just remotely plausible ... using some sort of stripping column.  It is also ridiculously tedious, expensive -- way more so than replacing a reagent, prone to at least some loss, and may even lead to some safety risks.

Replace this reagent.  Use it as is, it still precips chloride, right? 

Consider -- old silver nitrate solution also yellows in color.  You may be facing two separate problems, or no problem at all.