PMID- 19731669
OWN - NLM
STAT- MEDLINE
DCOM- 20091019
LR  - 20190715
IS  - 0013-936X (Print)
IS  - 0013-936X (Linking)
VI  - 43
IP  - 15
DP  - 2009 Aug 1
TI  - Effects of copper, lead, and cadmium on the sorption of 2,4,6-trichlorophenol 
      onto and desorption from wheat ash and two commercial humic acids.
PG  - 5726-31
AB  - The effects of copper (Cu2+), lead (Pb2+), and cadmium (Cd2+) on the sorption of 
      2,4,6-trichlorophenol (TCP) to and desorption from wheat ash and two commercial 
      humic acids were studied. Copper and Pb2+ diminished the sorption of TCP onto all 
      adsorbents, and made desorption of TCP less hysteretic from ash and German humic 
      acids (GeHA), but more hysteretic from Tianjin humic acids (TJHA). Cadmium had 
      little effect on TCP sorption and desorption. Fourier-transform infra red (FTIR) 
      and X-ray absorption spectroscopy (XAS) in conjunction with fluorescence 
      quenching studies provided insights into the mechanisms of TCP sorption and 
      desorption as affected by Cu2+ and Pb2+, indicating that complexation of Cu2+ and 
      Pb2+ was likely via carboxylic, hydroxylic and phenolic groups of ash, TJHA and 
      GeHA, and that theses same functional groups also reacted with TCP during 
      sorption. In contrast, Cd, a "soft acid", had no effect on the adsorption of TCP. 
      Hydration shells of dense water around adsorbed Cu2+ and Pb2+ ions may also 
      compete with TCP for available surface area. Fluorescence quenching of pyrene 
      verified that for TJHA, Cu2+ and Pb2+ promoted the formation of supramolecular 
      associations with interior hydrophobic regions separated from aqueous 
      surroundings by exterior hydrophilic layers.
FAU - Wang, Yu-Sheng
AU  - Wang YS
AD  - Stare Key Laboratory of Environmental Chemistry and Ecotoxicology, Research 
      Centerfor Eco-Environmental Sciences, PO Box 2871, Beijing 100085, China.
FAU - Shan, Xiao-Quan
AU  - Shan XQ
FAU - Feng, Mu-Hua
AU  - Feng MH
FAU - Chen, Guang-Cai
AU  - Chen GC
FAU - Pei, Zhi-Guo
AU  - Pei ZG
FAU - Wen, Bei
AU  - Wen B
FAU - Liu, Tao
AU  - Liu T
FAU - Xie, Ya-Ning
AU  - Xie YN
FAU - Owens, Gary
AU  - Owens G
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - United States
TA  - Environ Sci Technol
JT  - Environmental science & technology
JID - 0213155
RN  - 0 (Bromides)
RN  - 0 (Chlorophenols)
RN  - 0 (Humic Substances)
RN  - 0 (Pyrenes)
RN  - 0 (Soil Pollutants)
RN  - 00BH33GNGH (Cadmium)
RN  - 2P299V784P (Lead)
RN  - 789U1901C5 (Copper)
RN  - 9E0T7WFW93 (pyrene)
RN  - MHS8C5BAUZ (2,4,6-trichlorophenol)
SB  - IM
MH  - Adsorption
MH  - Biodegradation, Environmental
MH  - Bromides/chemistry
MH  - Cadmium/*analysis/chemistry
MH  - Chlorophenols/*chemistry
MH  - Copper/*analysis/chemistry
MH  - *Humic Substances
MH  - Lead/*analysis/chemistry
MH  - Magnetic Resonance Spectroscopy
MH  - Pyrenes/chemistry
MH  - Soil Pollutants/chemistry
MH  - Spectroscopy, Fourier Transform Infrared
MH  - Triticum
MH  - X-Rays
EDAT- 2009/09/08 06:00
MHDA- 2009/10/20 06:00
CRDT- 2009/09/08 06:00
PHST- 2009/09/08 06:00 [entrez]
PHST- 2009/09/08 06:00 [pubmed]
PHST- 2009/10/20 06:00 [medline]
AID - 10.1021/es803357b [doi]
PST - ppublish
SO  - Environ Sci Technol. 2009 Aug 1;43(15):5726-31. doi: 10.1021/es803357b.