Ionic liquid-containing semipermeable membrane devices for monitoring the polycyclic aromatic hydrocarbons in water.
Ionic liquid-containing semipermeable membrane devices (IL-SPMDs) were developed to monitor the polycyclic aromatic hydrocarbons in water. Uptake kinetics of naphthalene, 1-methylnaphthalene, phenanthrene, pyrene, chrysene by layflat low-density polyethylene tubing (15 cm x 2 cm) filled with 0.5 ml 1-butyl-3-methylimidazolium hexafluorophosphate ionic liquid were studied in a laboratory continuous-flow system for the duration of 16 days. The device concentration factors were in the range of 830-7800 for the studied PAHs. The kinetic parameters of IL/water partition coefficients, analytes uptake rate constants and sampling rates were estimated using mathematical models. These parameters were used in the field experiment to estimate the concentrations of the PAHs in Lanzhou section of Yellow River in China, with the result in comparison with that obtained by triolein-SPMD.
Zhao
Wenyan
W
College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China.
Han
Meng
M
Dai
Shugui
S
Xu
Jian
J
Wang
Ping
P
D002681:China; D004784:Environmental Monitoring / Q000295:instrumentation / Q000379:methods; D004867:Equipment Design; D007093:Imidazoles / Q000737:chemistry; D007477:Ions; D008567:Membranes, Artificial; D008956:Models, Chemical; D010539:Permeability; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis*; D012997:Solvents / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000032:analysis*
C412621:1-butyl-3-methylimidazolium hexafluorophosphate; D007093:Imidazoles; D007477:Ions; D008567:Membranes, Artificial; D011084:Polycyclic Aromatic Hydrocarbons; D012997:Solvents; D014874:Water Pollutants, Chemical