Chromatography Forum

I have to purchase internal standards for the determination of PAHs in drinking water: anthracene; fluoranthene; naphthalene; benzo(a)pyrene; benzo(b)fluoranthene, benzo(k)fluoranthene ; benzo(g,h,i)perylene, indeno(1,2,3-cd)pyrene; I have to use Liquid-Liquid extraction method; can somebody recomand me a mix of lebelled C13 PAH-s or deuterated; n-hexane and dichloromethane will be used for extractions..if possible some suppliers

Lists depend on what you want to do with your method. There are sets for standard methods, like the EPA methods - and the various vendors have lists in their catalogs.

Vendors - many. A lik from this site: http://www.sepscience.com/Information/Companies. And on that page you will see Phenomenex, Restek and Sigma. Various instrument vendors also have collections of standards and lists for specific standard methods - while others sell few things other than the instruments.

I have several companies I have ordered standards from - and a stack of catalogs on my desk at work. Accustandard comes to mind and I'll have to look at the shelf to get other names. That willo have to be later.

If you need a longer list, look up the site for PittCon and look for analytical standards suppliers who have shown up at past shows.

thank u very much....

We use Dr. Ehrenstorfer standards with good results.

http://www.analytical-standards.com

LA20950024HE PAH-Mix 24 deuterated 10 ng/µl 1 ml €68.00

YA20950031TO PAH-Mix 31 deuterated 1000 ng/µl 1 ml €89.00

L 20950902CY PAH-Mix 9 deuterated 10 ng/µl 10 ml €460.00

XA20950902CY PAH-Mix 9 deuterated 100 ng/µl 1 ml €460.00 -> we use this one