Kas ir dzelzs EDTA lietots for?

In kontakts ar aerēti dabiskie ūdeņi, dzelzs sāļi konvertēt uz the ferric form. Near neutral pH, ferric joni forma nešķīstošas cietas vielas un ir tādējādi nav bioloģiski pieejami. EDTA (un citi helātus aģenti) adrese šī problēma, by formēšana šķīstošie kompleksi tas pretestība veidošanās of hidroksīdi.

Kopā ar pentetic acid (DTPA), EDTA is wide used for sequestering metal ions. Otherwise these metal ions catalyze the decomposition of hydrogen peroxide, kas ir lietots balinātājs celuloze papīrs. Vairāki miljoni kilogrami EDTA ir ražoti šim mērķim gadā.

Iron chelate is commonly used for agricultural purposes to treat chlorosis, a condition in which leaves produce insufficient chlorophyll. Iron and ligand are absorbed separately by the plant roots whereby the highly stable ferric chelate is first reduced to the less stable ferrous chelate. In horticulture, iron chelate is often referred to as 'sequestered iron' and is used as a plant tonic, often mixed with other nutrients and plant foods (e.g. seaweed). It is recommended in ornamental horticulture for feeding ericaceous plants like Rhododendrons if they are growing in calcareous soils. The sequestered iron is available to the ericaceous plants, without adjusting the soil's pH, and thus, lime-induced chlorosis is prevented.

Dzelzs(III) EDTA var būt lietots as a komponents for the Hoagland solution or the Long Ashton Nutrient Solution.Saskaņā to Jacobson (1951), the stability of ferric EDTA was tested by adding 5 ppm iron, as the complex, to Hoagland's solution at dažādi pH vērtības. No loss of iron occurred under pH 6. In add to Jacobson's original recipe and a modified protocol by Steiner and van Winden (1970), an updated version for producing the ferric EDTA complex is presented in Table (1).