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PICLORAM LOW RECOVERIES METHOD 8151
Posted: Wed Apr 24, 2013 5:55 pm
by jakedaem
Im experiencing very low recoveries extracting picloram in soils samples. Recently we fail a PT study on that compound. Have anybody have that problem experiencing low recoveries??
any help will help a lot
Re: PICLORAM LOW RECOVERIES METHOD 8151
Posted: Thu Apr 25, 2013 3:05 am
by jss37992
Just curious, what is your extraction technique?
Re: PICLORAM LOW RECOVERIES METHOD 8151
Posted: Thu Apr 25, 2013 6:27 pm
by jakedaem
We use the SW846-8151A
Re: PICLORAM LOW RECOVERIES METHOD 8151
Posted: Fri Apr 26, 2013 2:32 am
by jss37992
Read through this SOP written by CAS lab. It's very similar to 8151 but has some tweaks. The general idea of the extraction is the same however. I have found it is very important to make sure that the soil is acidic. Also, extracting with ethyl ether rather than methylene chloride seems to be a little more efficient in regards to recovery.
http://www.dtsc-ssfl.com/files/lib_cbs% ... icides.pdf
I found it to be very useful. Hope this helps!