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A selective molecularly imprinted polymer (MIP) has been synthesized for isoxicam pre-concentration, followed by its spectrophotometric determination based on hydrogen bonding interactions between examined drug and alizarin yellow GG. This method is able to evaluate isoxicam in range of 1.0×10 −3 to 20.0μgmL −1 , with a limit of determination of 1.0ngmL −1 . The retention capacity...
A novel, simple, sensitive and effective method has been developed for preconcentration of thallium on 2,6-bis(N-phenyl carbamoyl)pyridine-naphthalene adsorbent in the pH range 5.0–10.0, prior to its spectrophotometric determination, based on the oxidation of bromopyrogallol red at λ=518nm. This method makes it possible to quantitize thallium in the range of 3.0×10 −9 to 1.0×10 −5 ...
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