PMID- 30903878
OWN - NLM
STAT- MEDLINE
DCOM- 20190808
LR  - 20190808
IS  - 1090-2414 (Electronic)
IS  - 0147-6513 (Linking)
VI  - 175
DP  - 2019 Jul 15
TI  - Examining the role of total organic carbon and black carbon in the fate of legacy 
      persistent organic pollutants (POPs) in indoor dust from Nepal: Implication on 
      human health.
PG  - 225-235
LID - S0147-6513(19)30310-0 [pii]
LID - 10.1016/j.ecoenv.2019.03.048 [doi]
AB  - Despite the fact that the consumption and import of legacy persistent organic 
      pollutants (POPs) have been stopped in Nepal since 2001, they are still of worry 
      for human prosperity and the environment because of their persistence behavior 
      and constant release from sources that are presently being used. The essential 
      objective of this study was to assess the concentration and spatial distribution 
      of organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs) in 
      residential dust from Nepal keeping in mind the end goal to evaluate the 
      importance of total organic carbon (TOC) and black carbon (BC) in the fate of 
      legacy POPs. Additionally, health risk exposure via dust ingestion and dermal 
      absorption was estimated to evaluate the significance of dust media for human 
      exposure. Results demonstrated that  summation operatorOCPs in dust was 37 times greater than 
       summation operatorPCBs. DDT was mostly dominated in the dust, and contributed 90% of the  summation operatorOCPs, 
      while hexa-CBs predominated among PCBs and represented 34% of  summation operatorPCBs. Birgunj and 
      Biratnagar had a relatively higher level of  summation operatorOCPs and  summation operatorPCBs than those of 
      Kathmandu and Pokhara. TOC and BC showed a poor connection with OCPs, 
      recommending little or no role. However, PCB in the dust, especially low 
      congeners was strongly linked with TOC but not BC indicating the significant role 
      of TOC. The daily risk exposure estimation indicated dermal absorption through 
      dust as the principal means of OCPs/PCBs intake to both adult and children 
      population. These estimated exposures were 2-4 orders of magnitude inferior to 
      their corresponding reference dose showing insignificant risk.
CI  - Copyright (c) 2019 Elsevier Inc. All rights reserved.
FAU - Chandra Yadav, Ishwar
AU  - Chandra Yadav I
AD  - State Key Laboratory of Organic Geochemistry, Guangzhou Institute of 
      Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, PR China; 
      Department of International Environmental and Agricultural Science (IEAS), Tokyo 
      University of Agriculture and Technology (TUAT) 3-5-8, Saiwai-Cho, Fuchu-Shi, 
      Tokyo, 1838509, Japan. Electronic address: icyadav.bhu@gmail.com.
FAU - Devi, Ningombam Linthoingambi
AU  - Devi NL
AD  - Centre for Environmental Sciences, Central University of South Bihar, SH-7, 
      Gaya-Panchanpur, Post-Fatehpur, P.S-Tekari, District-Gaya, 824236, Bihar, India.
FAU - Li, Jun
AU  - Li J
AD  - State Key Laboratory of Organic Geochemistry, Guangzhou Institute of 
      Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, PR China.
FAU - Zhang, Gan
AU  - Zhang G
AD  - State Key Laboratory of Organic Geochemistry, Guangzhou Institute of 
      Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, PR China.
LA  - eng
PT  - Journal Article
DEP - 20190320
PL  - Netherlands
TA  - Ecotoxicol Environ Saf
JT  - Ecotoxicology and environmental safety
JID - 7805381
RN  - 0 (Air Pollutants)
RN  - 0 (Dust)
RN  - 0 (Hydrocarbons)
RN  - 0 (Hydrocarbons, Chlorinated)
RN  - 0 (Pesticides)
RN  - 0 (Soot)
RN  - DFC2HB4I0K (Polychlorinated Biphenyls)
MH  - Adult
MH  - Air Pollutants/*analysis
MH  - Air Pollution, Indoor/*analysis
MH  - Child
MH  - Dust/*analysis
MH  - Environmental Monitoring/*methods
MH  - Housing/standards
MH  - Humans
MH  - Hydrocarbons/*analysis
MH  - Hydrocarbons, Chlorinated/analysis
MH  - Nepal
MH  - Pesticides/analysis
MH  - Polychlorinated Biphenyls/analysis
MH  - Soot/*analysis
OTO - NOTNLM
OT  - Dermal absorption
OT  - Dust ingestion
OT  - Lindane
OT  - Nepal
OT  - Technical DDT
OT  - Urban area
EDAT- 2019/03/25 06:00
MHDA- 2019/08/09 06:00
CRDT- 2019/03/24 06:00
PHST- 2018/11/09 00:00 [received]
PHST- 2019/03/06 00:00 [revised]
PHST- 2019/03/12 00:00 [accepted]
PHST- 2019/03/25 06:00 [pubmed]
PHST- 2019/08/09 06:00 [medline]
PHST- 2019/03/24 06:00 [entrez]
AID - S0147-6513(19)30310-0 [pii]
AID - 10.1016/j.ecoenv.2019.03.048 [doi]
PST - ppublish
SO  - Ecotoxicol Environ Saf. 2019 Jul 15;175:225-235. doi: 
      10.1016/j.ecoenv.2019.03.048. Epub 2019 Mar 20.