A spectrophotometric study of the formation of mixed-ligand complexes of iron(III)-N-hydroxyethylethylene-diamine-N,N',N'-triacetate and thiocyanate, chloride, bromide or acetate
書誌事項
- 公開日
- 1977-01
- 権利情報
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- https://www.elsevier.com/tdm/userlicense/1.0/
- DOI
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- 10.1016/s0003-2670(01)96058-1
- 公開者
- Elsevier BV
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説明
Abstract The formation of mixed ligand complexes of Fe(HEEDTA) (H 2 O) with thiocyanate, chloride, bromide, and acetate(X), and their application to the spectrophotometric determination of iron(III) are described; 1:1:1 Fe:HEEDTA:X complexes are formed. The stability constants (log K ) of the acetate, thiocyanate, and chloride mixed-ligaad complexes are 1.7, 1.2, and 0.2, respectively, at 25 °C. The thiocyanate complex (λmax, 425 nm) is suitable for the determination of iron(III) (1.6–8.0 μg ml −1 ). The molar absorptivity is 5.7·10 3 l mol −1 cm −1 , but the absorbance is very stable
収録刊行物
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- Analytica Chimica Acta
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Analytica Chimica Acta 88 (1), 141-146, 1977-01
Elsevier BV
