Radiolysis of aqueous solutions of cobalt/II/ and cobalt/III/ 2,2′-bis-[aminoethyl]ether-tetraacetate complexes

Hafez, M. B.; Hafez, N.

doi:10.1007/bf02166890

Journal of Radioanalytical and Nuclear Chemistry Letters

1984

DOI: 10.1007/bf02166890

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Radiolysis of aqueous solutions of cobalt/II/ and cobalt/III/ 2,2′-bis-[aminoethyl]ether-tetraacetate complexes

M. B. Hafez

N. Hafez

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1991

1998

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Cited by 3 publications

(1 citation statement)

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“…As has been reported in radiolysis of metal chelates of polyamino polycarboxylic acids [10,11] it is possible to suppose that .OH radicals (that are created from radiolysis of water) attack the chelating agent and Co (III) in both acidic and neutral mediums. Attack of hydroxyl radical to chelating agent leads to removal of hydrogen atom from the agent causing its degradation.…”

mentioning

confidence: 85%

Radiolysis of Cobalt(iii)-1,2 Bis(beta-Aminoethoxy)ethane N,n,n',n' Sodium Sulfunate Triacetic Acid Chelate

El-Dessouicy

1997

International Conference on Aerospace Sciences and Aviation Tec

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The publication demonstrates chelation studies of cobalt(III) with 1,2 bis(betaaminoethoxy)ethane N,N,N',N' sodium sulfonate triacetic acid (ASTA). The results showed the effectiveness of ASTA as a chelating agent by molar ratio , continuous variation and slope ratio methods. Stable complex 1:1 was formed at pH from 6.0 to 10.5. Solutions of Co-ASTA chelate of different molar ratios at pH 6.5 and 8.0 were irraiated by different gamma radiation doses. The results showed a linear decrease of absorbance with dose which can be utilized as a dosimeter for weak dose rate measurement in the studied range. A proposed radiolytic mechanism is discussed. The degradation of ligand has been related to hydroxyl radical attack.

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mentioning

confidence: 85%

Radiolysis of Cobalt(iii)-1,2 Bis(beta-Aminoethoxy)ethane N,n,n',n' Sodium Sulfunate Triacetic Acid Chelate

El-Dessouicy

1997

International Conference on Aerospace Sciences and Aviation Tec

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Radiolysis of cobalt(III)-1,2 bis(beta-aminoethoxy)ethane N,N,N',N' sodium sulfonate triacetic acid chelate

El-Dessouky¹,

Abdel-Raouf²

1998

J Radioanal Nucl Chem

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Chelation studies of cobalt(III) with 1,2 bis(beta-aminoethoxy)ethane N,N,N',N'sodium sulfonate triacetic acid (ASTA) were performed. The results showed the effectiveness of ASTA as a chelating agent by using: molar ratio, continuous variation and slope ratio methods. Stable complex 1:1 was formed at pH from 6.0 to 10.5. Solutions of Co-ASTA chelate of different molar ratios at pH 6.5 and 8.0 were irradiated by different gamma-radiation doses. The results showed a linear decrease of absorbance with gamma-radiation dose which can be utilized as a dosimeter for low dose rate measurement in the range studied. A proposed radiolytic mechanism is discussed. The degradation of the ASTA ligand has been related to hydroxyl radical attack.

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Formation and Radiolysis of Ferric Complex of 1,2 Bis (β-Aminoethoxy)Ethane N, N, N,, N, Sodium Sulfonate Triacetic Acid

El-Dessouky

1991

Isotopenpraxis Isotopes in Environmental and Health Studies

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Radiolysis of aqueous solutions of cobalt/II/ and cobalt/III/ 2,2′-bis-[aminoethyl]ether-tetraacetate complexes

Cited by 3 publications

References 5 publications

Radiolysis of Cobalt(iii)-1,2 Bis(beta-Aminoethoxy)ethane N,n,n',n' Sodium Sulfunate Triacetic Acid Chelate

Radiolysis of Cobalt(iii)-1,2 Bis(beta-Aminoethoxy)ethane N,n,n',n' Sodium Sulfunate Triacetic Acid Chelate

Radiolysis of cobalt(III)-1,2 bis(beta-aminoethoxy)ethane N,N,N',N' sodium sulfonate triacetic acid chelate

Formation and Radiolysis of Ferric Complex of 1,2 Bis (β-Aminoethoxy)Ethane N, N, N,, N, Sodium Sulfonate Triacetic Acid

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