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Control of an Estuarine Microfouling Sequence on Optical Surfaces Using Low-Intensity Ultraviolet Irradiation

机译:使用低强度紫外线照射控制光学表面上的河口微污垢序列

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摘要

Ultraviolet light has been investigated as an active energy input for the control of slime film formation on optical surfaces submerged in San Francisco Bay for periods up to 6 weeks. Irradiation of quartz underwater windows was carried out from three positions: (i) exterior to the window, (ii) from directly behind the window, and (iii) from the edge of the window with the ultraviolet (UV) energy refracted through the front of the window. Internally administered irradiation reaching levels of 10 to 30 μW per cm2 measurable at the glass surface was effective in preventing bacterial slime film formation and settlement of metazoan larvae. When administered from the external position, over one order of magnitude more (500 to 600 μW/cm2) UV energy was required to accomplish the same result. Irradiation from the edge position was most promising logistically and was effective in fouling control for 6 weeks. The results provide a preliminary quantitation of the energy requirement for control of the marine microfouling sequence which precedes development of macrofouling communities.
机译:已经研究了紫外线作为有功输入,以控制在旧金山湾浸没的光学表面上的粘膜形成,长达6周。石英水下窗户的照射是从三个位置进行的:(i)窗户的外部,(ii)从窗户的正后方,和(iii)从窗户的边缘通过紫外线(UV)能量折射到前面窗户的在玻璃表面可测量的内部照射达到每厘米 2 10至30μW的水平,可有效防止细菌粘膜的形成和后生幼虫的沉降。从外部位置给药时,需要更多的数量级(500至600μW/ cm 2 )紫外线能量才能达到相同的结果。从逻辑上讲,从边缘位置照射是最有前途的,并且可以有效控制结垢6周。结果提供了在大型污垢群落发展之前控制海洋微污垢序列所需能量的初步量化。

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