Dynamic and static removal of benzene from air based on task-specific ionic liquid coated on MWCNTs by sorbent tube-headspace solid-phase extraction procedure

2020 ◽  
Author(s):  
R. Ashouri ◽  
H. Shirkhanloo ◽  
A. M. Rashidi ◽  
S. A. H. Mirzahosseini ◽  
N. Mansouri
Keyword(s):  
Ionic Liquid ◽  
Solid Phase Extraction ◽  
Solid Phase ◽  
Extraction Procedure ◽  
Phase Extraction ◽  
Solid Phase Extraction Procedure ◽  
Task Specific Ionic Liquid

scholarly journals Separation of aniline from water and wastewater samples based on activated carbon nanoparticles and dispersive solid phase extraction procedure

2020 ◽  
Vol 3 (04) ◽  
pp. 72-84
Author(s):  
Saeed Fakhraie ◽  
Morteza Mehdipour Rabouri ◽  
Ahmad Salarifar
Keyword(s):  
Ionic Liquid ◽  
Activated Carbon ◽  
Solid Phase Extraction ◽  
Solid Phase ◽  
Extraction Procedure ◽  
Phase Extraction ◽  
Carboxylic Groups ◽  
Solid Phase Extraction Procedure ◽  
Water And Wastewater ◽  
Wastewater Samples

The water, wastewater and air are the main sources of aniline in environment. Aniline has a toxic effect in the human body and environment and so, must be determined by novel techniques. In this study, the activated carbon with microwave heating methods (MHM-ACNPs) were used for extraction aniline from waters by dispersive ionic liquid solid phase extraction procedure (D-IL-SPE) and compared to the activated carbon (AC). For this purpose, the mixture of acetone, ionic liquid and 30 mg of MHM-ACNPs/AC added to 100 mL of water samples at pH=8. After sonication for 10 min, the benzene ring in aniline as electron acceptor was chemically adsorbed on carboxylic groups of MHM-ACNPs as electron donors (MHM-ACNPs-COO─……C6H5-NH2) and then, the adsorbent was collected by IL phase in bottom of conical centrifuging tube. Finally, the aniline was released from MHM-ACNPs in remained solution by changing pH and the concentration of aniline determined by GC-FID.

scholarly journals Uniform solid-phase extraction procedure for toxicological drug screening in serum and urine by HPLC with photodiode-array detection

1997 ◽  
Vol 43 (2) ◽  
pp. 312-325 ◽  
Author(s):  
Chi-Kong Lai ◽  
Ting Lee ◽  
Kam-Ming Au ◽  
Albert Yan-Wo Chan
Keyword(s):  
Solid Phase Extraction ◽  
Drug Screening ◽  
Solid Phase ◽  
Extraction Procedure ◽  
Phase Extraction ◽  
Urine Metabolites ◽  
Ultraviolet Spectra ◽  
Solid Phase Extraction Procedure ◽  
Array Detection ◽  
Serum And Urine

Abstract In this HPLC–diode-array detection method for toxicological drug screening, a mixed-mode solid-phase extraction procedure is optimized for isolation of a broad range of drugs from serum and urine. Basic, neutral, and weakly acidic drugs are uniformly recovered. The extract from the solid-phase cartridge is readily injected to a reversed-phase HPLC column for separation by gradient elution. Unknown drugs and metabolites in urine and serum samples from acute drug poisoning cases are rapidly identified by matching their retention times and ultraviolet spectra with hundreds of reference compounds in the library. Urine metabolites of common toxicants from various medications and drugs of abuse are recorded, with their changes of retention times and ultraviolet spectra as related to their metabolic transformations. Glucuronide conjugates of common benzodiazepines, tricyclic antidepressants, and beta-blockers are examined directly without chemical or enzymatic hydrolysis. The system is reliable for diverse clinical investigations of drug overdoses, drug-induced psychoses, and substance abuse.

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