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In Situ Measurement of UV Fluence Rate Distribution by Use of a Micro Fluorescent Silica Detector

机译：通过使用微荧光二氧化硅检测器原位测量UV通量率分布

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摘要

The fluence rate (FR) distribution in an ultraviolet (UV) reactor was determined experimentally in situ by use of a novel 360° micro fluorescent silica detector (MFSD). The UV response of the MFSD was systematically characterized, and the results indicated that this detector responded only to UV in the range from 210 to 280 nm. The nonlinearity was found to be less than 1% as the FR varied from 0.083 to 2110/iW/cm . The luminescent signal increased by 0.11% for every degree increase in temperature in the studied range of 0-55 °C. FR distribution tests were performed in different media (air or water) with the water transmittance at either 95% or 85% determined in a 1-cm path length. The FR distribution of the near-lamp region (e.g., radius <50 mm) was well determined with the nearest distance to the sleeve being less than 3 mm. Comparisons were made between the experimental data and the calculations by use of the UVCalc model. This work demonstrates that the MFSD is a novel technique that can provide in situ and real-time measurements of the FR distribution in a UV reactor.
机译：紫外线（UV）反应器中的注量速率（FR）分布是使用新型360°微型荧光二氧化硅检测器（MFSD）通过实验确定的。系统地表征了MFSD的紫外线响应，结果表明该检测器仅对210至280 nm范围内的紫外线响应。发现当FR从0.083变化到2110 / iW / cm 2时，非线性小于1％。在所研究的0-55°C范围内，温度每升高1摄氏度，发光信号就会增加0.11％。 FR分布测试是在不同的介质（空气或水）中进行的，水的透射率为95％或85％，以1厘米的路径长度确定。很好地确定了近灯区域的FR分布（例如，半径<50 mm），与套筒的最近距离小于3 mm。通过使用UVCalc模型，对实验数据和计算结果进行了比较。这项工作表明，MFSD是一种新颖的技术，可以提供对UV反应器中FR分布的原位和实时测量。

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  • 来源
    《Environmental Science & Technology》 |2011年第7期|p.3034-3039|共6页
  • 作者

    Mengkai Li; Zhimin Qiang; Tinggang Li; James R. Bolton; Changlong Liu;

  • 作者单位

    State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 18 Shuang-qing Road, Beijing 100085, China;

    State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 18 Shuang-qing Road, Beijing 100085, China;

    State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 18 Shuang-qing Road, Beijing 100085, China;

    Department of Civil and Environmental Engineering, University of Alberta, Edmonton, AB T6G 2W2, Canada;

    School of Science, Tianjin University, Tianjin 300072, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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  • 正文语种 eng
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