Document OEXgeOyz1LwqJbm7qJeJm9vRj

' 1 > V J Monsanto/ i L.T.H lardy, London 12ih January, 1967 whh/mw ID P.G BmrAffxaM, St. Loui* C.R. Riohanan, St. Louis L.S, Cameron, Brussels Hr. R. tost Kelly, St. Louis ^ G.R. Graham. Hm York R.A. Steenrod, St. Louis D, Wood, Brussels J.A. LVans, London R.A. Baxter, Ruabon 'JAN 1 6 1967. On 2nd January 1967 Hr. A. Richardson of Shell Chemicals1 lSmatall Laboratory, Sittingboume, Kant talked with as over the telephone concerning the Swedish Press report relating to the identification of "Polyclilorinated Biphenols" as trace contaminant in aaa birds, fish etc. Richardson has been working for some yean on the similar problem with insecticidea such as LOT, which are known to have wide distribution in trace quantities. Be had already found that the chlorine-oontaining residue contained substances sort stable than EDI. and just as Sflren Jensen reports he has obtained spectrographic evidence that these axe very similar if not identical with Aroclore, He has obtained samples of Aroolors 1242, 1254. 1262 and 5460 from us,' and would now like to have small samples of any chemically pure Aroclor constituents which we may be able to supply. Milligram quantities would suffice for his puxpobe. Mr. Richardson was quite sure that the compounds reported to be "polychlorinated biphenols" are really meant to be polychlorinated biphenyls and as support he has sent m a copy of the synopsis of a paper entitled "Pesticide Analysis Presenoe of Polyohlorinated Biphenyls at Residue Analysis of Blologloal Samples" by Sdren Jensen and Ouanex Widsark (photocopy attached). 1 discussed with ^ioh&xdson the soundness of Jenseafe claims, and was assured that his work and findings are sound. Jensen is on the staff of the Institute of Analytical fhemistry, University of Stockholm. A note on the staff and work of the Institute is attached. Trou this you will aee that Jansen is wholly eoaeemed with the analysis of chlorinated pesticides and with the work of stations for routine analysis. I would be glad if Br. Baxter end Br. Buchanan would arrange to send me milligram samples of any pur Aroclor constituent that may be available at Ruabon and St. ^ouis respectively. COMPANY . CONFIDENTIAL MitFsam N.> TRAN 007566 WATER_PCB-SD0000033632