chlortetracycline and trioctyl-phosphine-oxide

chlortetracycline has been researched along with trioctyl-phosphine-oxide* in 2 studies

Other Studies

2 other study(ies) available for chlortetracycline and trioctyl-phosphine-oxide

Article	Year
Total internal reflected resonance light scattering determination of chlortetracycline in body fluid with the complex cation of chlortetracycline-europium-trioctyl phosphine oxide at the water/tetrachloromethane interface. Analytical chemistry, 2001, Sep-01, Volume: 73, Issue:17 A highly selective method of chlortetracycline (CTC) is proposed on the basis of the measurements of total internal reflected resonance light scattering (TMR-RLS) at water/tetrachloromethane (H20/CCl4) interfaces. In the pH range of 7.54-8.14, the interaction of the binary complex of Eu(III)/CTC in the presence of trioctyl phosphine oxide (TOPO) occurs at the H20/CCl4 interface, resulting in greatly enhanced TIR-RLS signals with the maximum peak located at 340 nm. The enhanced TIR-RLS intensity is in proportion to the CTC concentration in the range 0.98 to approximately 20.0 x 10(-7) mol/L. The limit of detection is 9.8 x 10(-9) mol/L. Synthetic samples and body fluid samples including human urine, human serum, and fresh milk were determined with the recovery of 95.4-106.4% and RSD of 2.9-3.9%. Topics: Animals; Anti-Bacterial Agents; Carbon Tetrachloride; Cattle; Chlortetracycline; Europium; Humans; Light; Milk; Organophosphorus Compounds; Scattering, Radiation; Water	2001
Study on the fluorescence system of chlortetracycline-Eu-TOPO-sodium dodecyl sulfonate and the determination of chlortetracycline. Journal of pharmaceutical and biomedical analysis, 1997, Volume: 15, Issue:12 The fluorescence system of Eu-chlortetracycline-TOPO-sodium dedecyl sulfonate was studied. It was found that chloretetracycline formed a complex with Eu(III) at pH 8.0-9.0 and then emitted the characteristic fluorescence of Eu(III). TOPO and sodium dodecyl sulfonate greatly enhanced the fluorescence intensity of the system. The experiments indicated that under the optimum determining conditions a linear relationship was obtained between the fluorescence intensity and chlortetracycline concentration in the range of 2.0 x 10(-8)-1.0 x 10(-5) M. The detection limit was 6.0 x 10(-9) M. In addition, the luminescence mechanism of the complex system has been discussed. Topics: Chlortetracycline; Europium; Fluorescence; Hydrogen-Ion Concentration; Organophosphorus Compounds; Sodium Dodecyl Sulfate; Spectrometry, Fluorescence; Surface-Active Agents	1997

Article

Year

Total internal reflected resonance light scattering determination of chlortetracycline in body fluid with the complex cation of chlortetracycline-europium-trioctyl phosphine oxide at the water/tetrachloromethane interface.

Analytical chemistry, 2001, Sep-01, Volume: 73, Issue:17

A highly selective method of chlortetracycline (CTC) is proposed on the basis of the measurements of total internal reflected resonance light scattering (TMR-RLS) at water/tetrachloromethane (H20/CCl4) interfaces. In the pH range of 7.54-8.14, the interaction of the binary complex of Eu(III)/CTC in the presence of trioctyl phosphine oxide (TOPO) occurs at the H20/CCl4 interface, resulting in greatly enhanced TIR-RLS signals with the maximum peak located at 340 nm. The enhanced TIR-RLS intensity is in proportion to the CTC concentration in the range 0.98 to approximately 20.0 x 10(-7) mol/L. The limit of detection is 9.8 x 10(-9) mol/L. Synthetic samples and body fluid samples including human urine, human serum, and fresh milk were determined with the recovery of 95.4-106.4% and RSD of 2.9-3.9%.

Topics: Animals; Anti-Bacterial Agents; Carbon Tetrachloride; Cattle; Chlortetracycline; Europium; Humans; Light; Milk; Organophosphorus Compounds; Scattering, Radiation; Water

2001

Study on the fluorescence system of chlortetracycline-Eu-TOPO-sodium dodecyl sulfonate and the determination of chlortetracycline.

Journal of pharmaceutical and biomedical analysis, 1997, Volume: 15, Issue:12

The fluorescence system of Eu-chlortetracycline-TOPO-sodium dedecyl sulfonate was studied. It was found that chloretetracycline formed a complex with Eu(III) at pH 8.0-9.0 and then emitted the characteristic fluorescence of Eu(III). TOPO and sodium dodecyl sulfonate greatly enhanced the fluorescence intensity of the system. The experiments indicated that under the optimum determining conditions a linear relationship was obtained between the fluorescence intensity and chlortetracycline concentration in the range of 2.0 x 10(-8)-1.0 x 10(-5) M. The detection limit was 6.0 x 10(-9) M. In addition, the luminescence mechanism of the complex system has been discussed.

Topics: Chlortetracycline; Europium; Fluorescence; Hydrogen-Ion Concentration; Organophosphorus Compounds; Sodium Dodecyl Sulfate; Spectrometry, Fluorescence; Surface-Active Agents

1997