PMID- 27125682
OWN - NLM
STAT- MEDLINE
DCOM- 20180208
LR  - 20180208
IS  - 1879-1026 (Electronic)
IS  - 0048-9697 (Linking)
VI  - 562
DP  - 2016 Aug 15
TI  - Reaction pathway and oxidation mechanisms of dibutyl phthalate by persulfate 
      activated with zero-valent iron.
PG  - 889-897
LID - S0048-9697(16)30773-2 [pii]
LID - 10.1016/j.scitotenv.2016.04.093 [doi]
AB  - This study investigated reaction pathway and oxidation mechanisms of dibutyl 
      phthalate (DBP) by persulfate (PS) activated with zero-valent iron (ZVI). The DBP 
      degradation was studied at three pH values (acidic, neutral and basic) in the 
      presence of different organic scavengers. Using a chemical probe method, both 
      sulfate radical (SO4(-)) and hydroxyl radical (.OH) were found to be primary 
      oxidants at pH3.0 and pH7.0, respectively while .OH was the major specie to 
      oxidize DBP at pH11.0. A similar result was found in an experiment of Electron 
      Spin Resonance spin-trapping where in addition to OH, superoxide radical (O2(-)) 
      was detected at pH11.0. The transformation of degradation products including 
      dimethyl phthalate (DMP), diethyl phthalate (DEP), phthalic anhydride, and 
      acetophenone exhibited diverse variation during the reaction processes. The 
      phthalic anhydride concentration appeared to be maximum at all pHs. Another 
      eleven intermediate products were also found at pH3.0 by GC-MS and HPLC analysis, 
      and their degradation mechanisms and pathways were proposed. It was suggested 
      that dealkylation, hydroxylation, decarboxylation and hydrogen extraction were 
      the dominant degradation mechanisms of DBP at pH3.0.
CI  - Copyright (c) 2016 Elsevier B.V. All rights reserved.
FAU - Li, Huanxuan
AU  - Li H
AD  - School of Environment and Energy, South China University of Technology, Guangzhou 
      510006, PR China; The Key Lab of Pollution Control and Ecosystem Restoration in 
      Industry Clusters, Ministry of Education, China, Guangzhou 510640, PR China.
FAU - Wan, Jinquan
AU  - Wan J
AD  - School of Environment and Energy, South China University of Technology, Guangzhou 
      510006, PR China; The Key Lab of Pollution Control and Ecosystem Restoration in 
      Industry Clusters, Ministry of Education, China, Guangzhou 510640, PR China; 
      State Key Lab Pulp and Paper Engineering, South China University of Technology, 
      Guangzhou 510640, PR China. Electronic address: ppjqwan@scut.edu.cn.
FAU - Ma, Yongwen
AU  - Ma Y
AD  - School of Environment and Energy, South China University of Technology, Guangzhou 
      510006, PR China; The Key Lab of Pollution Control and Ecosystem Restoration in 
      Industry Clusters, Ministry of Education, China, Guangzhou 510640, PR China; 
      State Key Lab Pulp and Paper Engineering, South China University of Technology, 
      Guangzhou 510640, PR China.
FAU - Wang, Yan
AU  - Wang Y
AD  - School of Environment and Energy, South China University of Technology, Guangzhou 
      510006, PR China; The Key Lab of Pollution Control and Ecosystem Restoration in 
      Industry Clusters, Ministry of Education, China, Guangzhou 510640, PR China.
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20160424
PL  - Netherlands
TA  - Sci Total Environ
JT  - The Science of the total environment
JID - 0330500
RN  - 0 (Phthalic Acids)
RN  - 0 (Sulfates)
RN  - 0 (Water Pollutants, Chemical)
RN  - 0 (sulfate radical)
RN  - 08X7F5UDJM (dimethyl phthalate)
RN  - 11062-77-4 (Superoxides)
RN  - 2286E5R2KE (Dibutyl Phthalate)
RN  - 3352-57-6 (Hydroxyl Radical)
RN  - E1UOL152H7 (Iron)
RN  - UF064M00AF (diethyl phthalate)
SB  - IM
MH  - Dibutyl Phthalate/*chemistry
MH  - Hydroxyl Radical/chemistry
MH  - Iron
MH  - *Models, Chemical
MH  - Oxidation-Reduction
MH  - Phthalic Acids
MH  - Sulfates
MH  - Superoxides
MH  - Water Pollutants, Chemical
OTO - NOTNLM
OT  - Degradation pathway
OT  - Dibutyl phthalate (DBP)
OT  - Mechanism
OT  - Persulfate (PS)
OT  - Zero-valent iron
EDAT- 2016/04/30 06:00
MHDA- 2018/02/09 06:00
CRDT- 2016/04/30 06:00
PHST- 2016/02/24 00:00 [received]
PHST- 2016/04/12 00:00 [revised]
PHST- 2016/04/13 00:00 [accepted]
PHST- 2016/04/30 06:00 [entrez]
PHST- 2016/04/30 06:00 [pubmed]
PHST- 2018/02/09 06:00 [medline]
AID - S0048-9697(16)30773-2 [pii]
AID - 10.1016/j.scitotenv.2016.04.093 [doi]
PST - ppublish
SO  - Sci Total Environ. 2016 Aug 15;562:889-897. doi: 10.1016/j.scitotenv.2016.04.093. 
      Epub 2016 Apr 24.