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4Catalytic determination of ultratrace amounts of Cu(II) by the oxidative coupling reaction of 3-methyl-2-benzothiazolinone hydrazone with N,N-dimethylaniline, Microchimica Acta Determination of selenium(IV) and other forms of selenium dissolved in sea water by anion-exchange resin loaded with sulfonic acid derivative of bismuthiol-II and hydride generation atomic-absorption spectrometry, Fresenius' Zeitschrift f??r analytische Chemie Determination of aldehydes in water samples by capillary electrophoresis after derivatization with hydrazino benzene sulfonic acid, Chromatographia