What is the principle of immunoassay? What makes it specific for compounds or narrow classes of compounds? Why might it be especially suitable as a survey technique for hazardous waste sites? What is...

What is the principle of immunoassay? What makes it specific for compounds or narrow classes of compounds? Why might it be especially suitable as a survey technique for hazardous waste sites? What is ELISA? In what sense is the TCLP a measure of available toxicants? Under what circumstances is it unnecessary to run the TCLP in evaluating the toxicity hazard of a waste material?