試題詳解

72. Chelation therapy is known as the administration of chelating agents to eliminate toxic heavy metals from the body and has been practiced for many years in clinical toxicology. EDTA is used for intravenous injection as a detoxification treatment for heavy metal ions. Which of the following statement associated with EDTA is incorrect?
(A) EDTA is a hexadentate ligand.
(B) The full name of EDTA is ethylenediaminetetraacetate.
(C) A direct titration method is suitable for analytes that are precipitated in the absence of EDTA.
(D) EDTA is commonly used as an additive for collecting whole blood and plasma specimens.
(E)After complexation with Fe³⁺, the EDTA can be detected by UV-vis absorption spectroscopy.