PMID- 32871315
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20201110
LR  - 20201110
IS  - 1879-1026 (Electronic)
IS  - 0048-9697 (Linking)
VI  - 751
DP  - 2021 Jan 10
TI  - Perfluoroalkyl substances (PFAS) in surface water and sediments from two urban 
      watersheds in Nevada, USA.
PG  - 141622
LID - S0048-9697(20)35151-2 [pii]
LID - 10.1016/j.scitotenv.2020.141622 [doi]
AB  - This study measured 17 perfluoroalkyl substances (PFAS) in surface water and 
      sediments collected from six locations along the Las Vegas Wash and Lake Mead and 
      eight locations along the Truckee River, Lake Tahoe, and Pyramid Lake in Nevada, 
      United States. Of the 17 PFAS analyzed, 12 were detected in the surface water 
      (n = 18) and 14 were detected in the sediments (n = 21) of the two watersheds. 
      The total concentration of PFAS in the Truckee River water was 441.7 ng/L and the 
      PFAS detected in the Las Vegas Wash water was 2234.3 ng/L. The predominant PFAS 
      species found in the water were perfluorohexanoic acid (PFHxA) (1.5-187.0 ng/L), 
      followed by perfluoropentanoic acid (PFPeA) (below detection limit [BDL] to 
      169.9 ng/L), perfluorooctanoic acid (PFOA) (BDL to 65.5 ng/L), and 
      perfluorobutane sulfonic acid (PFBS) (BDL to 44.7 ng/L). The total PFAS in the 
      sediments was 272.9 mug/kg (dry weight) for the Truckee River and 345.7 mug/kg for 
      the Las Vegas Wash. The predominant species in the sediments were perfluorodecane 
      sulfonic acid (PFDS) (BDL to 88.2 mug/kg), PFHxA (BDL to 20.3 mug/kg), PFBS (BDL to 
      29.1 mug/Kg), and perfluoroundecanoic acid (PFUA) (BDL to 22.9 mug/kg). The results 
      demonstrated that short-chain PFAS (C </= 8) were more prevalent in water, whereas 
      long-chain PFAS (C > 8) were more detectable in sediments. The Las Vegas Wash 
      water had much higher PFAS levels compared with the Truckee River water. The PFAS 
      concentrations and detection frequencies also significantly decreased in summer 
      compared with winter along the Las Vegas Wash.
CI  - Copyright (c) 2020 Elsevier B.V. All rights reserved.
FAU - Bai, Xuelian
AU  - Bai X
AD  - Division of Hydrologic Sciences, Desert Research Institute, Las Vegas, NV 89119, 
      USA. Electronic address: xuelian.bai@dri.edu.
FAU - Son, Yeongkwon
AU  - Son Y
AD  - Division of Atmospheric Sciences, Desert Research Institute, Reno, NV 89512, USA. 
      Electronic address: yeongkwon.son@dri.edu.
LA  - eng
PT  - Journal Article
DEP - 20200815
PL  - Netherlands
TA  - Sci Total Environ
JT  - The Science of the total environment
JID - 0330500
SB  - IM
OTO - NOTNLM
OT  - PFAS
OT  - Perfluoroalkyl carboxylic acid
OT  - Perfluoroalkyl substances
OT  - Perfluoroalkyl sulfonic acid
OT  - Urban watershed
COIS- Declaration of competing interest The authors declare that they have no known 
      competing financial interests or personal relationships that could have appeared 
      to influence the work reported in this paper.
EDAT- 2020/09/02 06:00
MHDA- 2020/09/02 06:01
CRDT- 2020/09/02 06:00
PHST- 2020/04/03 00:00 [received]
PHST- 2020/08/07 00:00 [revised]
PHST- 2020/08/09 00:00 [accepted]
PHST- 2020/09/02 06:00 [pubmed]
PHST- 2020/09/02 06:01 [medline]
PHST- 2020/09/02 06:00 [entrez]
AID - S0048-9697(20)35151-2 [pii]
AID - 10.1016/j.scitotenv.2020.141622 [doi]
PST - ppublish
SO  - Sci Total Environ. 2021 Jan 10;751:141622. doi: 10.1016/j.scitotenv.2020.141622. 
      Epub 2020 Aug 15.