Comprehensive Scheme for Cleanup, Fractionation, 

 and Analysis of Environmental Contaminants 



itC H, Reverst f~ 



Pesticides 

 and Ottier 

 Residues 



CFC 



f 4)H ElOAc 



Activated 



Aromatics 



HCB. Guthion 



Non-orttio PCBs 



Wtiole Fish 

 Na,SO. 



CHiCl] Eil'iCtion 



FiSfl Oil 



f 



Xenobiotics 



GPC 



Xenobiotics 



+ 

 Biogenics 



Lipids. 



Fattv Acids, 



Etc 



Cesium Silicate Chromat 

 or Aqueous Base Eitnction 



1 



Phenols, 



Acids. 



Etc 



Acid Base Eilriction 



and 

 PFBB Oeriviluation 



"> ElOAc 



Pesticides 

 PCBs. Etc 



Florisil 



' 20°'. Et,0 pel ether 



More Polar 



Dieldrin. Endrin 



2. 4 D Esters 



Phthalates 



o -BHC, DDO 



DDT, Toxaphene 



Chlordane 



Some Acids. 

 Etc 



PFB Ethers 



of Phenols. 



Etc 



Aqueous Base Eitraction 



PFB Ethers 



of F>henols. 



Etc 



Dinitrophenols 



Silica Gel 



Purified 

 PFB Ethers 

 of Phenols 



^^ 



ExiQClion 



and 



CH,N, 



Dinitroamsoles 



^ GC EC 



PCDDs 

 PCDFs 

 PCNs 

 PNAHs 



Activated 



Aromatics 



Aryi Phosphates 



PNAKs 



Less Polar 



Pesticides 



PCBs 



GCEC 



.GC-EC 



GCfP 



GCEC 



More Polar 

 Pesticides 



Phthalates 



? 4 Ebters 



Epoxides 



Thiophosphates 



Phenols 



Figure 3. A comprehensive analytical schematic for the separation 

 and analysis of organic contaminants. 



