PMID- 30776600
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20200225
LR  - 20200225
IS  - 1873-3336 (Electronic)
IS  - 0304-3894 (Linking)
VI  - 369
DP  - 2019 May 5
TI  - Photosensitized diastereoisomer-specific degradation of hexabromocyclododecane 
      (HBCD) in the presence of humic acid in aquatic systems.
PG  - 171-179
LID - S0304-3894(19)30165-7 [pii]
LID - 10.1016/j.jhazmat.2019.02.035 [doi]
AB  - Humic acids (HA) are the most important photosensitizers in the ocean and 
      generate highly reactive oxygen species (ROS), known as photochemically produce 
      reactive intermediates (PPRI), which degrade organic pollutants. Thus, to reveal 
      the fate of organic pollutants in an aqueous environment, it is important to 
      understand the natural photodegradation phenomenon caused by HA. Three ROS 
      generated from HA, (1)O(2), O(2)-, and OH, were measured using different probe 
      compounds and instrumental techniques. In this study, HBCD 
      (hexabromocyclododecane), a newly listed one of persistent organic pollutants 
      (POPs) under the Stockholm Convention, was studied to understand the 
      phototransformation mechanism, which has not been sufficiently investigated in 
      terms of its environmental fate and transport, despite the distinctive features 
      of its diastereoisomers. The results showed that the diastereoisomer-specific 
      distributions of alpha-, beta-, and gamma-HBCD were related to the acceleration and 
      retardation of photodegradation in the presence of AHA (Aldrich Humic Acid) under 
      simulated solar light, and only alpha-HBCD was rapidly photodegraded as the amount of 
      AHA increased relative to the absence of AHA. This study provides the first 
      characterization of the behavior of photosensitized HBCD degradation in aquatic 
      systems.
CI  - Copyright (c) 2019 Elsevier B.V. All rights reserved.
FAU - Son, Min-Hui
AU  - Son MH
AD  - Division of Environmental Science and Engineering, Pohang University of Science 
      and Technology (POSTECH), Pohang, 37673, Republic of Korea.
FAU - Gong, Jianyu
AU  - Gong J
AD  - School of Environmental Science and Engineering, Huazhong University of Science 
      and Technology, Wuhan, 430074, China.
FAU - Seo, Sunghee
AU  - Seo S
AD  - Division of Environmental Science and Engineering, Pohang University of Science 
      and Technology (POSTECH), Pohang, 37673, Republic of Korea.
FAU - Yoon, Hakwon
AU  - Yoon H
AD  - Division of Environmental Science and Engineering, Pohang University of Science 
      and Technology (POSTECH), Pohang, 37673, Republic of Korea.
FAU - Chang, Yoon-Seok
AU  - Chang YS
AD  - Division of Environmental Science and Engineering, Pohang University of Science 
      and Technology (POSTECH), Pohang, 37673, Republic of Korea. Electronic address: 
      yschang@postech.ac.kr.
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20190211
PL  - Netherlands
TA  - J Hazard Mater
JT  - Journal of hazardous materials
JID - 9422688
SB  - IM
OTO - NOTNLM
OT  - Diastereoisomer-Specific
OT  - Hexabromocyclododecane
OT  - Humic acid
OT  - Photosensitization
OT  - Reactive oxygen species
EDAT- 2019/02/19 06:00
MHDA- 2019/02/19 06:01
CRDT- 2019/02/19 06:00
PHST- 2018/10/20 00:00 [received]
PHST- 2019/01/27 00:00 [revised]
PHST- 2019/02/09 00:00 [accepted]
PHST- 2019/02/19 06:00 [pubmed]
PHST- 2019/02/19 06:01 [medline]
PHST- 2019/02/19 06:00 [entrez]
AID - S0304-3894(19)30165-7 [pii]
AID - 10.1016/j.jhazmat.2019.02.035 [doi]
PST - ppublish
SO  - J Hazard Mater. 2019 May 5;369:171-179. doi: 10.1016/j.jhazmat.2019.02.035. Epub 
      2019 Feb 11.