TY  - JOUR
AU  - Zhang, J.
AU  - Séquaris, J.-M.
AU  - Narres, H.-D.
AU  - Vereecken, H.
AU  - Klumpp, E.
TI  - Pyrene and Phenanthrene Sorption to Model and Natural Geosorbents in Single- and Binary-Solute Systems
JO  - Environmental Science & Technology
VL  - 44
SN  - 0013-936X
CY  - Columbus, Ohio
PB  - American Chemical Society
M1  - PreJuSER-11861
SP  - 8102 - 8107
PY  - 2010
N1  - Record converted from VDB: 12.11.2012
AB  - Sorption of pyrene and phenanthrene to model (illite and charcoal) and natural (Yangtze sediment) geosorbents were investigated by batch techniques using fluorescence spectroscopy. A higher adsorption of phenanthrene was observed with all sorbents, which is related to the better accessibility of smaller molecules to micropores in the molecular sieve sorbents. In addition, pyrene sorption in binary-solute systems with a constant initial concentration of phenanthrene (0.1 μmol L(-1) or 2 μmol L(-1)) was studied. A 0.1 μmol L(-1) concentration of phenanthrene causes no competitive effect on the pyrene sorption. A 2 μmol L(-1) concentration of phenanthrene significantly suppresses the sorption of pyrene, especially in the low concentration range; nonlinearity of the pyrene sorption isotherms thus decreases. The competitive effect of 2 μmol L(-1) phenanthrene on the pyrene sorption is overestimated by the ideal adsorbed solution theory (IAST) using the fitted single sorption results of both solutes. An adjustment of the IAST application by taking into account the molecular sieve effect is proposed, which notably improves the IAST prediction for the competitive effect.
KW  - Absorption
KW  - Adsorption
KW  - Charcoal: chemistry
KW  - Geologic Sediments: chemistry
KW  - Minerals: chemistry
KW  - Models, Chemical
KW  - Phenanthrenes: chemistry
KW  - Pyrenes: chemistry
KW  - Solutions
KW  - Spectrometry, Fluorescence
KW  - Minerals (NLM Chemicals)
KW  - Phenanthrenes (NLM Chemicals)
KW  - Pyrenes (NLM Chemicals)
KW  - Solutions (NLM Chemicals)
KW  - illite (NLM Chemicals)
KW  - pyrene (NLM Chemicals)
KW  - Charcoal (NLM Chemicals)
KW  - phenanthrene (NLM Chemicals)
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
C6  - pmid:20886848
UR  - <Go to ISI:>//WOS:000283484000023
DO  - DOI:10.1021/es1010847
UR  - https://juser.fz-juelich.de/record/11861
ER  -