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Tian L, Gao Y, Yang G, Schwartz B, Cai B, Lei G, Shi G, Ray C, Sok S, Martinez E, Li Y, Wu H. The evolution of hydrochemical and isotopic signatures from precipitation, surface water to groundwater in a typical karst watershed, Central Texas, USA. Isotopes Environ Health Stud 2021; 57:492-515. [PMID: 34269607 DOI: 10.1080/10256016.2021.1948410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Accepted: 05/28/2021] [Indexed: 06/13/2023]
Abstract
The Upper Cibolo Creek (UCC) karst watershed in Central Texas, USA, represents a portion of the drainage area that supplies water to the recharge zone for the Edwards Aquifer. However, the surface water-groundwater interactions along the UCC are not well quantified, and the hydraulic interactions are important for water budget and water quality of the aquifer. In this study, we investigated the evolution of hydrochemical and isotopic signatures (δ18O, δ2H and d-excess) from precipitation, surface water to groundwater in the UCC watershed from 2017 to 2019, and investigated surface water-groundwater interactions using samples from 14 creeks/spring sites. Factor analysis for the observed parameters demonstrates that changes in water hydrochemistry are primarily controlled by human activity, precipitation input, and water-rock interaction. Hierarchical clustering analysis of temporal isotope variations confirms that significant surface water-groundwater interactions occur in the UCC watershed. We identified relationships between nitrate concentrations at creek/spring sites and land-use conditions, and nitrate input sources were determined utilizing the dual-isotope analyses (δ15N and δ18O) of nitrate. This study provides capacity for a more precise assessment of water resources and water quality in Central Texas.
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Affiliation(s)
- Lijun Tian
- Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, People's Republic of China
- Department of Geological Sciences, University of Texas at San Antonio, San Antonio, TX, USA
| | - Yongli Gao
- Department of Geological Sciences, University of Texas at San Antonio, San Antonio, TX, USA
| | - Guang Yang
- Department of Geological Sciences, University of Texas at San Antonio, San Antonio, TX, USA
- College of Water and Architectural Engineering, Shihezi University, Shihezi, People's Republic of China
| | - Benjamin Schwartz
- Edwards Aquifer Research and Data Center, Texas State University, San Marcos, TX, USA
| | - Binggui Cai
- School of Geographical Sciences, Fujian Normal University, Fuzhou, People's Republic of China
| | - Guoliang Lei
- School of Geographical Sciences, Fujian Normal University, Fuzhou, People's Republic of China
| | - Guitao Shi
- School of Geographic Sciences and State Key Lab of Estuarine and Coastal Research, East China Normal University, Shanghai, People's Republic of China
| | - Christopher Ray
- Department of Geological Sciences, University of Texas at San Antonio, San Antonio, TX, USA
| | - Soeuth Sok
- Department of Geological Sciences, University of Texas at San Antonio, San Antonio, TX, USA
| | - Erica Martinez
- Department of Geological Sciences, University of Texas at San Antonio, San Antonio, TX, USA
| | - Yunxia Li
- Department of Geological Sciences, University of Texas at San Antonio, San Antonio, TX, USA
- College of Resources and Environmental Sciences, Hunan Normal University, Changsha, People's Republic of China
| | - Haibin Wu
- Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, People's Republic of China
- Center for Excellence in Life and Paleoenvironment, Chinese Academy of Sciences, Beijing, People's Republic of China
- College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing, People's Republic of China
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Luedtke WD, Landman U, Chiu YH, Levandier DJ, Dressler RA, Sok S, Gordon MS. Nanojets, Electrospray, and Ion Field Evaporation: Molecular Dynamics Simulations and Laboratory Experiments. J Phys Chem A 2008; 112:9628-49. [DOI: 10.1021/jp804585y] [Citation(s) in RCA: 83] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- W. D. Luedtke
- School of Physics, Georgia Institute of Technology, Atlanta, Georgia 30332-0430, Air Force Research Laboratory, Space Vehicles Directorate, Hanscom AFB, Massachusetts 01731-3010, and Department of Chemistry, 1605 Gilman Hall, Iowa State University, Ames, Iowa 50011-3111
| | - Uzi Landman
- School of Physics, Georgia Institute of Technology, Atlanta, Georgia 30332-0430, Air Force Research Laboratory, Space Vehicles Directorate, Hanscom AFB, Massachusetts 01731-3010, and Department of Chemistry, 1605 Gilman Hall, Iowa State University, Ames, Iowa 50011-3111
| | - Y.-H. Chiu
- School of Physics, Georgia Institute of Technology, Atlanta, Georgia 30332-0430, Air Force Research Laboratory, Space Vehicles Directorate, Hanscom AFB, Massachusetts 01731-3010, and Department of Chemistry, 1605 Gilman Hall, Iowa State University, Ames, Iowa 50011-3111
| | - D. J. Levandier
- School of Physics, Georgia Institute of Technology, Atlanta, Georgia 30332-0430, Air Force Research Laboratory, Space Vehicles Directorate, Hanscom AFB, Massachusetts 01731-3010, and Department of Chemistry, 1605 Gilman Hall, Iowa State University, Ames, Iowa 50011-3111
| | - R. A. Dressler
- School of Physics, Georgia Institute of Technology, Atlanta, Georgia 30332-0430, Air Force Research Laboratory, Space Vehicles Directorate, Hanscom AFB, Massachusetts 01731-3010, and Department of Chemistry, 1605 Gilman Hall, Iowa State University, Ames, Iowa 50011-3111
| | - S. Sok
- School of Physics, Georgia Institute of Technology, Atlanta, Georgia 30332-0430, Air Force Research Laboratory, Space Vehicles Directorate, Hanscom AFB, Massachusetts 01731-3010, and Department of Chemistry, 1605 Gilman Hall, Iowa State University, Ames, Iowa 50011-3111
| | - M. S. Gordon
- School of Physics, Georgia Institute of Technology, Atlanta, Georgia 30332-0430, Air Force Research Laboratory, Space Vehicles Directorate, Hanscom AFB, Massachusetts 01731-3010, and Department of Chemistry, 1605 Gilman Hall, Iowa State University, Ames, Iowa 50011-3111
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Viallard M, Sok S, Olivera C, Dehghani J, Riou B. [Respiratory tract obstruction caused by ballooning of an intubation tube cuff during nitrous oxide inhalation]. Ann Fr Anesth Reanim 1990; 9:460-2. [PMID: 2240701 DOI: 10.1016/s0750-7658(05)80955-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
A typical case of upper airway obstruction due to deformation of a low pressure tracheal tube cuff is reported. It would seem that this herniation may have been due to nitrous oxide diffusing with in the air-filled cuff, thereby causing it to overdistend. This increase in pressure occurred after 3 hours of inhalation of a mixture of oxygen and nitrous oxide. The deformed cuff may either block the lumen at the end of the tube, or push the tube against the tracheal wall. The result is, in either case, a mechanical obstruction of the airway, with hypoxia, and then anoxia. In the reported case, it was the decrease of SpO2 which alerted the anaesthetist. Pulse oximetry was helpful for an early diagnosis. To avoid such accidents, it is suggested either to inflate the cuff with the gas mixture with which the patient is ventilated, or to deflate it every 30 min.
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Affiliation(s)
- M Viallard
- Département d'Anesthésie-Réanimation, Hôpital Tenon, Paris
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