list 1147 A Modification of the McCord and Zcmp Method for the Determination of Lead in Urine.

. t )& & & .* * s July 17, 1969 PERSONAL AND CONFIDENTIAL RPorbeesridt eTn.t , P.I nddeuTsrterviiallleH,y gMi.eDn.e Foundation o f America, Zne. 6231 Centre Avenue Pittsburgh, Pa. 15232 Dear Bob: I have been seemingly negligent in replying so tardily to your letter of June 19, and now you have returned from your vacation, no doubt, to find no reply on your desk.

LIA24859 LEAD INDUSTRIES ASSOCIATION, INC tl MAOISON AVCNUt NCW VOK , M.

LIA24859 LEAD INDUSTRIES ASSOCIATION, INC tl MAOISON AVCNUt NCW VOK , M.

Fowler, Project Manager International Lead Zinc Research Organization 392 Madison Avenue New York, New York 10017 Dear Mr.

Fowler, Project Manager International Lead Zinc Research Organization 392 Madison Avenue New York, New York 10017 Dear Mr.

Lead Industries Association, Inc 292 Madison Avenue New York, N.

Lead Industries Association, Inc 292 Madison Avenue New York, N.

Such data are known for some cases of lead poison ing.

heerlngi Ethyl Corporetior., C 4 3 Batteries, National Lead Cocpeny, Kleetrio Storage Battery Corpeny, Dare & Cospany, St.

EXPERIMENTAL RESULTS Sample* of urine and blood containing known amounts of cadmium, chromium, thallium, . i cobalt, and lead were prepared by the Philadelphia Medical Examiner' Office.

pbBt+ ion can be correctly recognised from only 2^ ng of tetraethyl lead (Figure 3 - normal spectrum; Figure 4 - integrated spectrum).

The importance of maintain ing the concentration of air-borne lead at a very low value stems from lead's high toxicity and its tendency, in small amounts, to accumulate in tlie human system.

These particles have been identified as lead salts which are formed through acid attack of the autoclave lead lining.

Am ong o th er th in g s, he d iscu ssed c u rre n t statu s of his planning fo r the se m in a r on lead .