Mesoporous MCM-41 modified with Cu(II) for indole removal: A Taguchi design

Khoshkarvandani, S. A.; Fazaeli, Reza; Saravani, Masoud Giahi; Pasdar, Hoda

doi:10.5267/j.ccl.2020.4.002

Cited by 5 publications

(1 citation statement)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…13,33 RSM is a combination of mathematical and statistical techniques for the modelling and analysis of systems in which a response of interest is influenced by several variables. 33,34 A central composite design named CCD was used in the present study to investigate the independent variables allowing maximum extraction of adsorbed PAHs and NPAHs from diesel particulate matter and to obtain information on the significant effects and interactions between the selected factors that positively influence the extraction process and to identify the optimal value of each variable. Consequently, a 3-factor composite design was developed.…”

Section: Modelling: Central Composite Design (Ccd)mentioning

confidence: 99%

Pressurized liquid extraction and gas chromatography/mass spectrometry for determination of nitrated polycyclic aromatic hydrocarbons adsorbed on refractory diesel particles

Oukebdane

2024

10.5267/j.ccl

View full text Add to dashboard Cite

A pressurized liquid extraction (PLE) technique was evaluated in this study and optimized using response surface methodology (RSM) for the determination of polycyclic aromatic hydrocarbons and their nitro derivatives from diesel particulate matter. A central composite design (CCD) was applied for the study of three parameters (temperature, nature of solvent and static time) and the optimal conditions were determined for a time of 9 min and a temperature of 145 °C and dichloromethane as extraction solvent. With the GC/MS analytical technique, the limits of detection (LOD) obtained range from 0.3 to 1.5 µg.L-1 for PAHs and from 4.6 to 8 µg.L-1 for nitrated PAHs. Also, this method allowed excellent recoveries of NPAH adsorbed on diesel soot particles (R ≥ 90%) using a mixture of solvents (1% acetic acid in pyridine). The PLE process developed in this research is quantitative and reproducible while using much less solvent than conventional extraction methods.

show abstract