ISSN 0005-2531 (Print) ISSN 2522-1841 (Online)
NEW REAGENTS FOR PHOTOMETRIC DETERMINATION OF MERKURY
A.Z.Zalov

 

Five new reagents are suggersted for determining mercury (II): 2-hydroxytiophenol(HTPh), 2,5-dihydroxythiophenol(DHTPh) 2-hydroxy-5-chlorothiophenol (HXTPh), 2-hydroxy-5-bromthiophenol (HBTPh), 2-hydroxy-5-yodthiophenol (HJTPh).  The molar extinction coefficient is equal to (2.4–3.3)∙104 (450 – 480 nm). The optical density is proportional to 0.2–125 μg of  Hg concentration in 5 ml CHCl3. The formation of a mixed-ligand compound with ratio Hg(II):HTPh:Аm=1:2:2.

 

Keywords : complex formation, extraction, mercury, 2-hydroxy-5- bromothiophenol, aminophenol, Beer`s law
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