Rapid detection of trace amounts of surfactants using nanoparticles in fluorometric assays.

نویسندگان

  • Harri Härmä
  • Susana Laakso
  • Sari Pihlasalo
  • Pekka Hänninen
  • Bertrand Faure
  • Subhasis Rana
  • Lennart Bergström
چکیده

Rapid microtiter assays that utilize the time-resolved fluorescence resonance energy transfer or quenching of dye-labeled proteins adsorbed onto the surfaces of polystyrene or maghemite nanoparticles have been developed for the detection and quantification of trace amounts of surfactants at concentrations down to 10 nM.

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

DETERMINATION OF ULTRA-TRACE AMOUNTS OF COBALT BY ADSORPTIVE DIFFERENTIAL PULSE VOLTAMMETRY USING ACDA (2-AMINOCYCLOPENTENE- 1-DITHIOCARBOXYLIC ACID)

The present work describes a selective, rapid and sensitive method for the determination of cobalt using the adsorptive differential pulse voltammetry technique. The method is based on the accumulation of Co(II) complex with 2-aminocyclopentene-1-dithiocarboxylic acid on a hanging mercury drop electrode, followed by measurement of the current of the adsorbed complex. The effects of experimental...

متن کامل

Trace determination of gatifloxacin in pharmaceutical and biological samples using hydrophobic magnetic nanoparticles-assisted ionic liquid microextraction coupled with spectrofluorimetry

A simple and rapid microextraction procedure based on the application of magnetic nanoparticles and hydrophobic 1-Hexylpyridinium hexafluorophosphate [Hpy][PF6] ionic liquid (IL) was applied to trace determination of gatifloxacin. A mixture of [Hpy][PF6] and magnetic nanoparticles was injected into the sample solution containing the analyse of interest and a cloudy solution was forme...

متن کامل

Trace determination of gatifloxacin in pharmaceutical and biological samples using hydrophobic magnetic nanoparticles-assisted ionic liquid microextraction coupled with spectrofluorimetry

A simple and rapid microextraction procedure based on the application of magnetic nanoparticles and hydrophobic 1-Hexylpyridinium hexafluorophosphate [Hpy][PF6] ionic liquid (IL) was applied to trace determination of gatifloxacin. A mixture of [Hpy][PF6] and magnetic nanoparticles was injected into the sample solution containing the analyse of interest and a cloudy solution was forme...

متن کامل

Extraction and Determination of Heavy Metals Using Silver Coated Magnetic Nanoparticles and Flame Atomic Absorption Spectrometry

A rapid, simple and sensitive magnetic solid phase extraction (MSPE) method was developed for the pre-concentration and determination of copper and cadmium ions. In this study, modified Fe3O4@Ag nanoparticles were synthesized and then ligand 2-isonicotinoyl hydrazine carbodithiolate (ITHCDT) was bonded to silver due to the formation of covalent bond of S-Ag. In this method, copper and cadmium i...

متن کامل

Preconcentration and Determination of Trace Amounts of Aromatic Compounds in Non-alcoholic Beer Samples by In-syringe Dispersive liquid–liquid Microextraction

In this paper, a new simple and effective method based on dispersive liquid–liquid microextraction procedure is proposed for rapid and simultaneous separation and preconcentration of ultra trace amounts of benzene, toluene, ethyl benzene and xylenes (BTEX) in non-alcoholic Beer samples. In this experiment, a glass syringe was used as extraction unit. With this simple configuration, the centrifu...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:
  • Nanoscale

دوره 2 1  شماره 

صفحات  -

تاریخ انتشار 2010