PMID- 25777670
OWN - NLM
STAT- MEDLINE
DCOM- 20160112
LR  - 20220330
IS  - 1879-1298 (Electronic)
IS  - 0045-6535 (Linking)
VI  - 133
DP  - 2015 Aug
TI  - Highly chlorinated unintentionally produced persistent organic pollutants 
      generated during the methanol-based production of chlorinated methanes: A case 
      study in China.
PG  - 1-5
LID - S0045-6535(15)00158-7 [pii]
LID - 10.1016/j.chemosphere.2015.02.044 [doi]
AB  - The formation of unintentionally produced persistent organic pollutants (POPs) 
      may occur during various chlorination processes. In this study, emissions of 
      unintentionally produced POPs during the methanol-based production of chlorinated 
      methanes were investigated. High concentrations of highly chlorinated compounds 
      such as decachlorobiphenyl, octachloronaphthalene, octachlorostyrene, 
      hexachlorobutadiene, hexachlorocyclopentadiene, hexachlorobenzene, and 
      pentachlorobenzene were found in the carbon tetrachloride byproduct of the 
      methanol-based production of chlorinated methanes. The total emission amounts of 
      hexachlorocyclopentadiene, hexachlorobutadiene, polychlorinated benzenes, 
      polychlorinated naphthalenes, octachlorostyrene, and polychlorinated biphenyls 
      released during the production of chlorinated methanes in China in 2010 were 
      estimated to be 10080, 7350, 5210, 427, 212, and 167 kg, respectively. Moreover, 
      polychlorinated dibenzo-p-dioxins (PCDDs), polychlorinated dibenzofurans (PCDFs) 
      were formed unintentionally during chlorinated methanes production, the emission 
      factor for PCDDs/DFs was 364 mug toxic equivalency quotient (TEQ) t(-1) product 
      for residues, which should be added into the UNEP toolkit for updating. It was 
      worth noting that a high overall toxic equivalency quotient from polychlorinated 
      naphthalenes and PCDDs/DFs was generated from the chlorinated methanes production 
      in China in 2010. The values reached 563 and 32.8 g TEQ, respectively. The 
      results of the study indicate that more research and improved management systems 
      are needed to ensure that the methanol-based production of chlorinated methanes 
      can be achieved safely.
CI  - Copyright (c) 2015 Elsevier Ltd. All rights reserved.
FAU - Zhang, Lifei
AU  - Zhang L
AD  - State Environmental Protection Key Laboratory of Dioxin Pollution Control, 
      National Research Center for Environmental Analysis and Measurement, 100029 
      Beijing, China. Electronic address: lfzhang@cneac.com.
FAU - Yang, Wenlong
AU  - Yang W
AD  - State Environmental Protection Key Laboratory of Dioxin Pollution Control, 
      National Research Center for Environmental Analysis and Measurement, 100029 
      Beijing, China.
FAU - Zhang, Linli
AU  - Zhang L
AD  - State Environmental Protection Key Laboratory of Dioxin Pollution Control, 
      National Research Center for Environmental Analysis and Measurement, 100029 
      Beijing, China; College of Resource Environment and Tourism, Capital Normal 
      University, 100048 Beijing, China.
FAU - Li, Xiaoxiu
AU  - Li X
AD  - College of Resource Environment and Tourism, Capital Normal University, 100048 
      Beijing, China.
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20150313
PL  - England
TA  - Chemosphere
JT  - Chemosphere
JID - 0320657
RN  - 0 (Environmental Pollutants)
RN  - OP0UW79H66 (Methane)
RN  - Y4S76JWI15 (Methanol)
SB  - IM
MH  - China
MH  - Environmental Pollutants/*analysis/*chemistry
MH  - *Halogenation
MH  - Methane/*chemistry
MH  - Methanol/*chemistry
OTO - NOTNLM
OT  - Byproduct
OT  - Chlorinated methanes
OT  - Dioxin
OT  - Emission
OT  - Hexachlorobenzene
OT  - Polychlorinated naphthalenes
EDAT- 2015/03/18 06:00
MHDA- 2016/01/13 06:00
CRDT- 2015/03/18 06:00
PHST- 2014/12/10 00:00 [received]
PHST- 2015/02/11 00:00 [revised]
PHST- 2015/02/19 00:00 [accepted]
PHST- 2015/03/18 06:00 [entrez]
PHST- 2015/03/18 06:00 [pubmed]
PHST- 2016/01/13 06:00 [medline]
AID - S0045-6535(15)00158-7 [pii]
AID - 10.1016/j.chemosphere.2015.02.044 [doi]
PST - ppublish
SO  - Chemosphere. 2015 Aug;133:1-5. doi: 10.1016/j.chemosphere.2015.02.044. Epub 2015 
      Mar 13.