Chemiluminescent Determination of the Pesticide Bromoxynil by On-line Photodegradation in a Flow-Injection System
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Accession number;06A0028758
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| Title;Chemiluminescent Determination of the Pesticide Bromoxynil by On-line Photodegradation in a Flow-Injection System |
| Author;
PAWLICOVA Z.
(Univ. Valencia, Valencia, Esp)
ALBERT-GARCIA J. R.
(Univ. Valencia, Valencia, Esp)
SAHUQUILLO I.
(Univ. Cardenal Herrera-ceu, Valencia, Esp)
GARCIA MATEO J. V.
(Univ. Cardenal Herrera-ceu, Valencia, Esp)
CATALA ICARDO M.
(Polytechnic Univ. Valencia, Valencia, Esp)
MARTINEZ CALATAYUD J.
(Univ. Valencia, Valencia, Esp)
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Journal Title;Anal Sci
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Journal Code:G0673B
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ISSN:0910-6340
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VOL.22;NO.1;PAGE.29-34(2006)
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| Figure&Table&Reference;FIG.5, TBL.1, REF.46 |
| Pub. Country;Japan |
| Language;English |
| Abstract;A new, robust and simple method is proposed for the chemiluminescent determination of the pesticide Bromoxynil. The empirical procedure is performed with the aid of a flow-injection manifold provided with an on-line photo-reactor to obtain chemiluminescent photofragments. After a period of 12 s of irradiation with an 8 W low-pressure mercury lamp, a chemiluminescent oxidation was performed with the system potassium permanganate in a polyphosphoric acid medium. The photolysis required a basic medium (KOH 0.014 mol l'-1') with ethanol (1%) as a sensitizer. The method allowed the determination of 134 samples h'-1' of Bromoxynil in a wide interval of concentrations, over the range 5 * 10'-3'-1 mg l'-1'; the detection limit was 5 * 10'-3' mg l'-1'. The RSD (n = 24) at 0.25 mg l'-1' of the pesticide level was 2.3%. The method was applied to a water sample and to a formulation. (author abst.) |
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