Study of Microemulsion Composition Effect over Phosphorescence Emission of a Polycyclic Aromatic Compound

نویسندگان

  • A. Segura Carretero
  • C. Cruces-Blanco
  • M. Sánchez Polo
  • A. Fernández Gutiérrez
  • A. Fernández-Nieves
چکیده

A detailed characterization of the microemulsion composition is necessary to make the phosphorimetry suitable as powerful analytical methodology. Four microemulsion systems (hexane/n-butanol/SDS/water, hexane/n-pentanol/SDS/water, hexane/3-pentanol/SDS/ water, and hexane/n-hexanol/SDS/water) were studied, establishing the oil/water (O/W) microemulsion composition with best phosphorimetric characteristics (maximum phosphorescence intensity and minimum stabilization time). The different experimental variables that affect the phosphorimetric emission of the model compound selected named fluoranthene (i.e. concentrations of micellar agent, heavy atom, and oxygen scavenger) were carefully optimized and an analytical method for this analyte was proposed. The best results (maximum sensitivity and

برای دانلود 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

Study of different normal-microemulsion compositions by room-temperature phosphorescence to determine benzo[a]pyrene in environmental samples

We have studied the presence in the environment of the polycyclic aromatic hydrocarbon benzo[a]pyrene (BaP) in the city of Granada using room-temperature phosphorescence (RTP) applied to microemulsions. A detailed study into the different compositions of several normal microemulsion together with experimental variables (heavy atom, deoxygenate agent, pH) and instrumental parameters (wavelengths...

متن کامل

Estimated IR and phosphorescence emission fluxes for specific Polycyclic Aromatic Hydrocarbons in the Red Rectangle

Following the tentative identification of the blue luminescence in the Red Rectangle by Vijh et al. (2005), we compute absolute fluxes for the vibrational IR emission and phosphorescence bands of three small polycyclic aromatic hydrocarbons. The calculated IR spectra are compared with available ISO observations. A subset of the emission bands are predicted to be observable using presently avail...

متن کامل

Biodegradation of Polycyclic Aromatic Hydrocarbons (PAHs) in Petroleum Contaminated Soils

Polycyclic aromatic hydrocarbons are a class of potentially hazardous chemicals of environmental and health concern. PAHs are one of the most prevalent groups of contaminants found in soil. Biodegradation of complex hydrocarbon usually requires the cooperation of more than single specie. In this research biotreatment of PAH (phenanthrene) was studied in a solid-phase reactor using indigenou...

متن کامل

Empirical Quantitative Relationship between Molecular Structure and Phosphorescence Transition Energy of Polycyclic Aromatic Thiophenes

Polycyclic aromatic thiophenes (thiaarenes) ex­ hibit vibronically well-resolved phosphorescence spectra in rigid matrices (e.g. ethanol at 77 K). Al­ though several papers on the properties of the lowest triplet (T,) states o f thiophene benzologs have appeared in the literature [1 -5 ] , no systematic study on the relationship between the T } state ener­ gies (phosphorescence 0 . 0 bands) of ...

متن کامل

Polycyclic Aromatic Hydrocarbons in Offshore Surface Sediments of the Northern Persian Gulf, Bushehr Province

Polycyclic aromatic hydrocarbons (PAHs) are classified as an important category of semi-volatile and persistent organic pollutants. They cause environmental problems due to their toxicity and accumulation in sediments. In this research, offshore sediments of 19 stations in 8 transects of the Persian Gulf in Bushehr province were studied to assess the sources of PAHs. The extraction and clean up...

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

برای دانلود 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

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2002