Combined elution test

It is necessary to further test the proposed combined elution procedure with various sample matrices in contaminated soils and waste materials. This is to be done for the elution of metals, as well as the one of important classes of organic pollutants such as CHCs, PAHs, phenols or PCBs. Relevant data will soon be published elsewhere. 

Pass 0.5 mL of the suspended acetone solution through the Bond Elut SCX (100-mg) cartridge and collect in a test-tube. Wash the cartridge column with 2 x 0.5 mL of acetone and combine all of the eluates (total volume ca 1.5 mL). Cleanup is not required for water samples. 

From the interpretation of the values with respect to "elution yield" can be derived that for a good "elution yield ( 70%) a combination with 0.1-5 would be needed. Complexing agents meeting this criterion, namely THI0, TRIS, PAH, GTT, MPG and TM were further tested in column experiments. 

---