Disposable pipette extraction phase based on styrene–divinylbenzene/pernigraniline composite, applied for dexamethasone determination in synovial fluid by HPLC with UV detector

• Autorzy: Soares, Francielle Q. , Alvarenga, Bruna F. , Ruggiero, Marçal A. , Casanova, Monise C. , Lima, Eliana M. , Rabelo, Denilson , Chaves, Andréa R.
• Języki publikacji: EN

Abstrakty

EN

A reliable method using disposable pipette extraction (DPX) based on composite of pernigraniline and styrene–divinylbenzene (Sty–DVB) copolymer was applied to the analysis of dexamethasone in synovial fluid using high-performance liquid chromatography and ultraviolet (UV) detector (HPLC–UV). DPX variables, namely, number of draw/eject cycles for extraction or desorption, sample pH, volume, and desorption solvent, were optimized to establish the best sorption equilibrium and analysis time. The highest extraction efficiency value was obtained with 50 μL of synovial fluid mixed with 1950 μL of water, in five cycles of 300 μL of sampling, followed by liquid desorption of the drug with 300 μL of methanol in three cycles. The developed method demonstrated a linear response over the range from 10 to 100 ng/mL, with R2 = 0.993. The limit of quantification (LOQ) was 10 ng/mL. Based on the validation results, the proposed method can be a useful tool to detect dexamethasone levels in synovial fluid.

Słowa kluczowe

EN

Dexamethasone; DPX/HPLC–UV; synovial fluid; pernigraniline

• Czasopismo: Acta Chromatographica
• Rocznik: 2019
• Tom: Vol. 31, no. 4
• Strony: 250--254
• Opis fizyczny: Bibliogr. 17 poz., rys., tab.

Twórcy

autor

Soares, Francielle Q.

• Instituto de Química, Universidade Federal de Goiás, Goiânia, Goiás, Brazil

autor

Alvarenga, Bruna F.

• Instituto de Química, Universidade Federal de Goiás, Goiânia, Goiás, Brazil

autor

Ruggiero, Marçal A.

• Instituto Federal de Goiás, Inhumas, Goiás, Brazil

autor

Casanova, Monise C.

• Instituto de Química, Universidade Federal de Goiás, Goiânia, Goiás, Brazil

autor

Lima, Eliana M.

• Faculdade de Farmácia, Universidade Federal de Goiás, Goiânia, Goiás, Brazil

autor

Rabelo, Denilson

• Instituto de Química, Universidade Federal de Goiás, Goiânia, Goiás, Brazil

autor

Chaves, Andréa R.

• Instituto de Química, Universidade Federal de Goiás, Goiânia, Goiás, Brazil,

Bibliografia

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Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).

Identyfikatory

DOI

10.1556/1326.2018.00460