Migration behavior and separation of sulfonamides in capillary zone electrophoresis III. Citrate buffer as a background electrolyte

Lin, Chin‐Feng; Chang, Chia-Chich; Lin, Wenzhi

doi:10.1016/s0021-9673(97)00010-1

Cited by 119 publications

(48 citation statements)

References 39 publications

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“…A further application at 280 nm is illustrated in Fig. 5 in the separation of the sulfonamides sulfamethazine, sulfathiazole and sulfamerazine according to a slight modification of a method previously reported by Lin et al [22]. …”

Section: Applications With the 280 Nm Uv-ledmentioning

confidence: 99%

Absorbance detector for capillary electrophoresis based on light-emitting diodes and photodiodes for the deep-ultraviolet range

Bui

Hauser

2015

Journal of Chromatography A

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Section: Applications With the 280 Nm Uv-ledmentioning

confidence: 99%

Absorbance detector for capillary electrophoresis based on light-emitting diodes and photodiodes for the deep-ultraviolet range

Bui

Hauser

2015

Journal of Chromatography A

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“…Despite of these, CE is not very common for the determination of sulfonamides. Some papers have been published, using mainly UV [35][36][37] or amperometric detection [38], applying the CZE mode [39][40][41][42][43] or MEKC [41,[44][45][46] in different matrices such as pharmaceutical compounds, biological fluids, or food of animal origin. The coupling of CE to MS for the determination of sulfonamides is gaining in importance in the last years.…”

Section: Introductionmentioning

confidence: 99%

Application of capillary zone electrophoresis with large‐volume sample stacking to the sensitive determination of sulfonamides in meat and ground water

et al. 2006

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A CZE method with UV-Vis detection has been established and validated for the determination of nine sulfonamides: sulfapyridine, sulfamethazine, sulfamerazine, sulfamether, sulfadiazine, sulfadimethoxine, sulfamethoxazole, sulfachlorpyridazine, and sulfamethizole. Optimum separation was obtained on a 64.5 cm x 75 microm bubble cell capillary using a buffer containing 45 mM sodium phosphate and 10% methanol at pH 7.3, with temperature and voltage of 27 degrees C and 25 kV, respectively. p-Aminobenzoic acid was used as an internal standard . Taking into account the lack of sensitivity of the UV-Vis detection, the application of an on-line preconcentration methodology, such as large-volume sample stacking with polarity switching has been proposed. This procedure combined with a solvent extraction/SPE method applied for off-line preconcentration and cleanup provides a significant improvement in the LODs, ranging from 2.59 to 22.95 mug/L for the studied compounds; the quantification of these residues being possible below the levels established by EU legislation in animal food products, such as meat. Satisfactory recoveries were also obtained in the analysis of these compounds in ground water.

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“…Figura 4 -Diagrama de especiação e estrutura química dos antibióticos Sulfametoxazol (SMX) e Trimetoprima (TMP) (Adaptado de Lin et al, 1997;Qiang & Adams, 2004).…”

Section: Resultados E Discussõesunclassified

Influência Do Ph Na Degradação De Sulfametoxazol E Trimetoprima Por Processo Foto-Fenton Solar Mediado Por Ferrioxalato

Dias

Souza²,

Vilar³

et al. 2015

Anais Do XX Congresso Brasileiro De Engenharia Química

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RESUMO -Antibióticos como sulfametoxazol (SMX) e trimetoprima (TMP), são lançados em corpos hídricos e, devido à ineficiência do tratamento convencional, buscamse tecnologias mais avançadas para remoção desses compostos. Neste trabalho, a redução de SMX e TMP (20 mg/L) foi avaliada por processo foto-Fenton solar, utilizando ferrioxalato. A concentração de ferro foi 5 mg/L e o pH variou de 4,0 a 6,5. Observou-se que a degradação dos antibióticos diminuiu com o aumento do pH devido a diminuição do complexo mais fotoativo, mas, o processo foi capaz de degradar SMX e TMP em pH próximo da neutralidade. Além disso, apesar da eficiência de degradação dos antibióticos, a pH 4,0 ter sido muito semelhante, a degradação de SMX foi mais afetada pelo aumento do pH, uma vez que as principais espécies de SMX presente em solução são neutras ou carregadas negativamente, podendo formar complexos estáveis com as espécies de ferro, limitando a foto-redução de Fe 3+ , diminuindo a eficiência do processo.

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Migration behavior and separation of sulfonamides in capillary zone electrophoresis III. Citrate buffer as a background electrolyte

Cited by 119 publications

References 39 publications

Absorbance detector for capillary electrophoresis based on light-emitting diodes and photodiodes for the deep-ultraviolet range

Absorbance detector for capillary electrophoresis based on light-emitting diodes and photodiodes for the deep-ultraviolet range

Application of capillary zone electrophoresis with large‐volume sample stacking to the sensitive determination of sulfonamides in meat and ground water

Influência Do Ph Na Degradação De Sulfametoxazol E Trimetoprima Por Processo Foto-Fenton Solar Mediado Por Ferrioxalato

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