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Title SOME RECENT ANALYTICAL DEVELOPMENTS IN RESPECT TO OR6ANOCHLORINE COMPOUNDS IN THE ENVIRONMENT '* Authors end heme of Institute: A, Richardson '`Shell" Research Limited, Tunstall Laboratory* SI tt Ingbourrre, Kent, England.

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Analytical Chemistry Special Study 71-2 Job No. 13480 MCS 1016 - ANENVIRONMENTALLY COMPATIBLE AROCLOR INTRODUCTION The objective of this report is to bring together all the informa tion, so far generated by Monsanto, et al, that supports the contention that an environmentally compatible Aroclor can be manufactured.

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POLYCHUfflTNATED DIPHENYL BIODEGRADATION STUDIES The threat of continued accumulation of polychlorinated biphenyl (PCB) residues ir. the environment is responsible for much of the apprehen sion about the future use of these materials.

New threat to Lake Michigan fish NBtYX'DHAIHVUIDMWM)EnfUTZK An indusiriul pollutant. polychJori- naiad biphenyls. hat contemtnatad whitofioh in Lake Michigan at levels ex- caaBlng the Mine standards as carp in Uka Npin in western Wisconsin. whet* United stales Food and Dmg Admtnit- trnUan officials Dried recently that no v carp dan he sold any longer in interstate OMnmerte for human consumption. ' Lake traui and large aalmon in Lake Michigan else art expected to be contasMnaisdbeyond laden) limits lor sale Mpawnption, according 10 state Depart- MM of Natiirai Resources officials. the polychlorinated biphenyls (KBs) are now weed in transformers mi capacitors.