scholarly journals Experimental study on turbulent structures in air-water interface region of closed wind-water basin

2001 ◽  
Vol 4 ◽  
pp. 629-638
Author(s):  
Iehisa NEZU ◽  
Rie INOUE ◽  
Daisuke Ikeda
Keyword(s):  
Experimental Study ◽  
Interface Region ◽  
Water Interface ◽  
Turbulent Structures ◽  
Water Basin ◽  
Air Water Interface

Toward a Microscopic Model of Light Absorbing Dissolved Organic Compounds in Aqueous Environments: Theoretical and Experimental Study

2021 ◽  
Author(s):  
Natalia V. Karimova ◽  
Michael R Alves ◽  
Man Luo ◽  
Vicki Grassian ◽  
Robert Benny Gerber
Keyword(s):  
Experimental Study ◽  
Organic Compounds ◽  
Water Systems ◽  
Microscopic Model ◽  
Water Interface ◽  
Marine Environments ◽  
Macromolecular Systems ◽  
Aqueous Environments ◽  
Air Water Interface ◽  
Dissolved Organic Compounds

Water systems often contain complex macromolecular systems that absorb light. In marine environments, these light absorbing components are often at the air-water interface and can participate in the chemistry of...

scholarly journals Hydrophobicity of Water at the Surface as Studied by laser-Induced Fluorescence Microscopy

1998 ◽  
Vol 17 (4) ◽  
pp. 175-184 ◽  
Author(s):  
Yao-qun Li ◽  
Shinya Sasaki ◽  
Takanori Inoue ◽  
Teiichiro Ogawa
Keyword(s):  
Fluorescence Microscopy ◽  
Fluorescence Spectrum ◽  
Water Surface ◽  
Laser Induced Fluorescence ◽  
Interface Region ◽  
Water Interface ◽  
Microscopic Approach ◽  
Hydrocarbon Solvents ◽  
Air Water Interface

A sensitive comparative fluorescence microscopic approach was developed and used to study the water at the air-water interface region. An insoluble chromophore mesoc-α,β,γ,δ-tetraphenylporphine (TPP) was spread on the water. Its fluorescence spectrum indicated that the spectrum of TPP on the water surface was similar to those measured in nonpolar hydrocarbon solvents. Thus, the water at the surface was concluded to be hydrophobic and less polar than the water in the bulk.

An experimental study on turbulent coherent structures near a sheared air-water interface

1999 ◽  
Vol 15 (4) ◽  
pp. 289-298 ◽  
Author(s):  
Wang Shuangfeng ◽  
Jia Fu ◽  
Niu Zhennan ◽  
Wu Zhangzhi
Keyword(s):  
Experimental Study ◽  
Coherent Structures ◽  
Water Interface ◽  
Turbulent Coherent Structures ◽  
Air Water Interface

Experimental study of air-water interface properties in self-aerated flows

2018 ◽  
Vol 31 (5) ◽  
pp. 940-948 ◽  
Author(s):  
Wang-ru Wei ◽  
Wei-lin Xu ◽  
Jun Deng ◽  
Zhong Tian ◽  
Fa-xing Zhang
Keyword(s):  
Experimental Study ◽  
Interface Properties ◽  
Water Interface ◽  
Air Water Interface

Sampling and analysis of the air-water interface with SEM and EDS of microlayers

1989 ◽  
Vol 47 ◽  
pp. 1004-1005
Author(s):  
Randall W. Smith ◽  
John Dash
Keyword(s):  
Heavy Metals ◽  
Surface Microlayer ◽  
Surface Films ◽  
Water Interface ◽  
Physical Processes ◽  
Infrared Spectroscopic Analysis ◽  
Eds Analysis ◽  
Air Water Interface ◽  
Significant Area ◽  
Bulk Chemical

The structure of the air-water interface forms a boundary layer that involves biological ,chemical geological and physical processes in its formation. Freshwater and sea surface microlayers form at the air-water interface and include a diverse assemblage of organic matter, detritus, microorganisms, plankton and heavy metals. The sampling of microlayers and the examination of components is presently a significant area of study because of the input of anthropogenic materials and their accumulation at the air-water interface. The neustonic organisms present in this environment may be sensitive to the toxic components of these inputs. Hardy reports that over 20 different methods have been developed for sampling of microlayers, primarily for bulk chemical analysis. We report here the examination of microlayer films for the documentation of structure and composition.Baier and Gucinski reported the use of Langmuir-Blogett films obtained on germanium prisms for infrared spectroscopic analysis (IR-ATR) of components. The sampling of microlayers has been done by collecting fi1ms on glass plates and teflon drums, We found that microlayers could be collected on 11 mm glass cover slips by pulling a Langmuir-Blogett film from a surface microlayer. Comparative collections were made on methylcel1ulose filter pads. The films could be air-dried or preserved in Lugol's Iodine Several slicks or surface films were sampled in September, 1987 in Chesapeake Bay, Maryland and in August, 1988 in Sequim Bay, Washington, For glass coverslips the films were air-dried, mounted on SEM pegs, ringed with colloidal silver, and sputter coated with Au-Pd, The Langmuir-Blogett film technique maintained the structure of the microlayer intact for examination, SEM observation and EDS analysis were then used to determine organisms and relative concentrations of heavy metals, using a Link AN 10000 EDS system with an ISI SS40 SEM unit. Typical heavy microlayer films are shown in Figure 3.

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