Re: iron tests
To: Aquatic-Plants at actwin_com
Subject: Re: iron tests
From: psears at emr_ca (Paul Sears)
Date: Fri, 1 Mar 1996 10:17:59 -0500 (EST)
In-Reply-To: <199603010839.DAA31512 at looney_actwin.com> from "Aquatic-Plants-Owner at ActWin_com" at Mar 1, 96 03:39:02 am
I was interested to see the posting that the iron tests are
thiocyanate based. I had suspected as much from the colour produced,
but I think it important to note that this test _only_ works on iron
in the 3 oxidation state. The test may be used to distinguish
between the two usual oxidation states of iron in solution.
Source: "A Textbook of Macro and Semimicro Qualitative Inorganic
Analysis", Fourth edition, by Arthur I Vogel.
Perhaps the test kits have a component that oxidizes the
iron II to III, and one then measures a total. Does anyone know?
Paul Sears Ottawa, Canada