Iron promoted decontamination studies of nitrophenylphosphate in aqueous and microemulsion media: A model for phosphate ester decontamination in the environment

被引：7

作者：

Tafesse, Fikru ^{[1
]}

Mndubu, Yolisile ^{[1
]}

机构：

[1] Univ S Africa, Dept Chem, ZA-0001 Pretoria, South Africa

来源：

WATER AIR AND SOIL POLLUTION | 2007年 / 183卷 / 1-4期

关键词：

environmental decontamination; hydrolysis of NPP; microemulsions; organophosphates; Turnbull's blue; ADENOSINE 5'-TRIPHOSPHATE; HYDROLYSIS; REACTIVITY; TETRAMINECOBALT(III); ION;

D O I：

10.1007/s11270-007-9360-x

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The hydrolysis of 4-Nitrophenylphosphate (NPP) in the presence of Ferrous and Ferric ions in Oil in water microemulsion media was investigated. The reaction was monitored by measuring the absorbance of the nitrophenolate ion produced in the reaction aliquots with time. The order of effectiveness of the microemulsion system towards the hydrolysis of NPP was found to be cationic > anionic > aqueous in the presence of Ferrous, Ferric and Turnbull's blue at neutral pH. The result of the present investigation enriches our understanding of the possible roles polymetallic ions play in hydrolysis reactions. The reactions mimic the roles of purple acid phosphatases in the hydrolysis of phosphate esters. The application of the above systems for environmental decontamination of organophosphates is also envisoned.

引用

页码：107 / 113

页数：7

共 19 条

[1] PHOSPHATE ESTER HYDROLYSIS FACILITATED BY MINERAL PHASES [J].

BALDWIN, DS ;

BEATTIE, JK ;

COLEMAN, LM ;

JONES, DR .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1995, 29 (06) :1706-1709

[2] DEVELOPING ARTIFICIAL HYDROLYTIC METALLOENZYMES BY A UNIFIED MECHANISTIC APPROACH [J].

CHIN, J .

ACCOUNTS OF CHEMICAL RESEARCH, 1991, 24 (05) :145-152

[3] Structure of a (μ-oxo)(dihydroxo)diiron(III) complex and its reactivity toward phosphodiesters [J].

Duboc-Toia, C ;

Menage, S ;

Vincent, JM ;

Averbuch-Pouchot, MT ;

Fontecave, M .

INORGANIC CHEMISTRY, 1997, 36 (27) :6148-6149

[4]

Dugas H., 1989, BIOORGANIC CHEM CHEM, Vsecond

[5]

HUBNER PWA, 1980, INORG CHEM, V19, P1267

[6]

HUNG HC, 1997, J CHEM SOC PT, V2, P2757

[7] Fe(TPA)-catalyzed alkane hydroxylation. Metal-based oxidation vs radical chain autoxidation [J].

Kim, J ;

Harrison, RG ;

Kim, C ;

Que, L .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1996, 118 (18) :4373-4379

[8] ORGANIC-REACTIVITY IN MICROEMULSION SYSTEMS [J].

MENGER, FM ;

ELRINGTON, AR .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1991, 113 (25) :9621-9624

[9]

Prince L.M., 1977, MICROEMULSIONS

[10]

ROSSO D, 1995, J CHEM SOC P2, P673

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