scholarly journals Methods for the isolation and identification of polycyclic aromatic hydrocarbons found in complex mixtures and the determination of their possible toxicity by means of bioassay techniques. Progress report, August 1, 1978-August 1979

1979 ◽  
Author(s):  
S.R. Lipsky ◽  
W.J. McMurray
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Progress Report ◽  
Complex Mixtures ◽  
Isolation And Identification ◽  
Polycyclic Aromatic

scholarly journals Error Propagation as a Factor in Selection of Measurement Intervals for the Determination of Polycyclic Aromatic Hydrocarbons by Second-Derivative Spectrofluorimetry

2000 ◽  
Vol 83 (4) ◽  
pp. 977-984 ◽  
Author(s):  
Áurea Andrade Eiroa ◽  
Esther Vázquez Blanco ◽  
Purificación López Mahía ◽  
Soledad Muniategui Lorenzo ◽  
Darío Prada Rodríguez ◽  
...  
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Error Propagation ◽  
Complex Mixtures ◽  
Second Derivative ◽  
Polycyclic Aromatic ◽  
Minimum Number ◽  
Analytical Result ◽  
Selection Of

Abstract The most suitable wavelength intervals were selected for the determination of 4 polycyclic aromatic hydrocarbons (PAHs; benzo[g,h,i]perylene, dibenzo[a,h]anthracene, pyrene, and triphenylene) in very complex mixtures of 11 PAHs: anthracene, benz[a]anthracene, benzo[a]pyrene, benzo[b]fluoranthene, benzo[g,h,i]perylene, benzo[k]fluoranthene, chrysene, dibenz[a,h]anthracene, phenanthrene, pyrene, and triphenylene. The multiple linear regression algorithm was applied to measurements made in several wavelength intervals previously selected on the basis of sensitivity and minimum number of interfering compounds. Of the different models obtained, those displaying minimum error propagation in the analytical result were selected. By applying the models proposed in this study, we precisely and accurately determined benzo[g,h,i]perylene, dibenz[a,h]anthracene, pyrene, and triphenylene in complex mixtures—a feat that could not be achieved by the use of constant-wavelength spectrofluorimetry in combination with second-derivative techniques.

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