HPLC Determination of Hormones in São José Do Rio Preto Municipal Dam, São Paulo, Brazil

Cordeiro, Daniela; Rocha, Gerôncio Albuquerque; Onaka, Eduardo Makoto; Cappelini, Luciana Teresa Dias; Pereira, Renata de Oliveira; Pacces, Vitor Hugo Polisel; Vieira, Eny María

doi:10.1080/10826076.2011.637275

Cited by 2 publications

(3 citation statements)

References 13 publications

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“…The proposed methods for the determination of ESR were found to be more sensitive than some of the published HPLC-UV methods [ 16 , 22 , 33 ]. In addition, the LOD value of ESR for the proposed RP-HPLC method was found to be more sensitive than the other reported HPLC methods [ 22 , 25 , 31 , 33 , 35 , 36 ] and a spectrophotometric method that has been published very recently [ 38 ]. The methods developed can be successfully used in the laboratories of quality control for the routine analysis of both compounds in pure form and pharmaceutical forms without preseparation.…”

Section: Discussionmentioning

confidence: 89%

“…Although these methods are sensitive, derivatization is usually required. Various HPLC-UV detection techniques, which are used commonly for the separation of comparatively high concentrations of drugs, have been reported for the determination of ESR in combination with different related estrogenic compounds in pharmaceutical dosage forms [ 15 , 16 ], biological matrices [ 17 – 22 ], nutrients [ 23 – 27 ], and waters [ 28 – 36 ].…”

Section: Introductionmentioning

confidence: 99%

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Development of Simultaneous Derivative Spectrophotometric and HPLC Methods for Determination of 17-Beta-Estradiol and Drospirenone in Combined Dosage Form

Aydoğmuş

Yılmaz

Yörüsün

et al. 2015

International Scholarly Research Notices

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Simple, rapid spectrophotometric, and reverse-phase high performance liquid chromatographic methods were developed for the concurrent analysis of 17-beta-estradiol (ESR) and drospirenone (DRS). The spectrophotometric method was based on the determination of first derivative spectra and determined ESR and DRS using the zero-crossing technique at 208 and 282 nm, respectively, in methanol. The linear range was 0.5–32.0 µg·mL−1 for DRS and 0.5–8.0 µg·mL−1 for EST. The limit of detection (LOD) values were 0.14 µg·mL−1 and 0.10 µg·mL−1 and limit of quantification (LOQ) values were 0.42 µg·mL−1 and 0.29 µg·mL−1 for ESR and DRS, respectively. The chromatographic method was based on the separation of both analytes on a C18 column with a mobile phase containing acetonitrile and water (70 : 30, v/v). Detection was performed with a UV-photodiode array detector at 279 nm. The linear range was 0.08–2.5 µg·mL−1 for DRS and 0.23–7.5 µg·mL−1 for EST. LOD values were 0.05 µg·mL−1 and 0.02 µg·mL−1 and LOQ values were 0.15 µg·mL−1 and 0.05 µg·mL−1 for ESR and DRS, respectively. These recommended methods have been applied for the simultaneous determination of ESR and DRS in their tablets.

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Section: Discussionmentioning

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Development of Simultaneous Derivative Spectrophotometric and HPLC Methods for Determination of 17-Beta-Estradiol and Drospirenone in Combined Dosage Form

Aydoğmuş

Yılmaz

Yörüsün

et al. 2015

International Scholarly Research Notices

View full text Add to dashboard Cite

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“…For SPE, the standard methodology described by Cordeiro et al (2012) was used. A manifold (Agilent VacElut 12) containing a 500 mg/6 mL Strata-X cartridge (Phenomenex ® ) in an exhaust hood was used for extraction.…”

Section: Samplesmentioning

confidence: 99%

Chemical and Biological Indicators of Environmental Pollution in the Canal do Cunha (Guanabara Bay, Rio de Janeiro, Brazil): Analysis and Determination of Toxins

de Freitas,

de Oliveira Santos,

dos Santos

et al. 2023

Journal of Coastal Research

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Pollutants and biological data were assessed in surface sediments from an urbanized and hypereutrophic bay in Brazil. The surface sediment samples contained coarse to fine grains. The samples were analysed using four tools that followed standard methodologies. Pollutants were observed in several sediment samples, as was observed with the pseudototal trace elements. Dinoflagellate cysts showed an indication of a eutrophic environment with the presence of L. machaerophorum. On the other hand, the Vibrio fischeri bioassay demonstrated high toxicity in this area. The obtained data demonstrate the high level of pollution in the area due to a high input of untreated sewage and a large number of industries close to the collection points. Therefore, the Canal do Cunha basin can be considered an outflow area for different pollutant residues being transported into Guanabara Bay.

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HPLC Determination of Hormones in São José Do Rio Preto Municipal Dam, São Paulo, Brazil

Cited by 2 publications

References 13 publications

Development of Simultaneous Derivative Spectrophotometric and HPLC Methods for Determination of 17-Beta-Estradiol and Drospirenone in Combined Dosage Form

Development of Simultaneous Derivative Spectrophotometric and HPLC Methods for Determination of 17-Beta-Estradiol and Drospirenone in Combined Dosage Form

Chemical and Biological Indicators of Environmental Pollution in the Canal do Cunha (Guanabara Bay, Rio de Janeiro, Brazil): Analysis and Determination of Toxins

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