Use of aqueous silver to enhance inactivation of coliphage MS-2 by UV disinfection
Use of aqueous silver to enhance inactivation of coliphage MS-2 by UV disinfection
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DOI：
10.1128/aem.70.5.2848-2853.2004
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发表时间：
2004-05-01
影响因子：
4.4
通讯作者：
Talbot, M
中科院分区：
文献类型：
--
作者：
Butkus, MA;Labare, MP;Talbot, M
已观察到银和紫外线辐射之间的协同效应，可显著提高紫外线辐射灭活病毒的有效性。在约40 mJ/cm(2)的影响下，当银浓度低至110马克杯/升时，观察到银与紫外线之间的协同效应（P < 0.0615）。在相同的影响下，在银浓度为0.1 mg/l时，MS-2的失活率约为3.5 log(99.97%)，比在无银浓度为40 mJ/cm(2)时MS-2的失活率约为1.8 log（98.42%）有显著改善（P < 0.0001）。采用改进的Chick-Watson动力学模型模拟银和IN辐射的协同效应。对于4 log（99.99%）的MS-2失活，稀释系数(n)确定为0.31，这表明影响的变化比银浓度的比例变化对失活的影响更大。
A synergistic effect between silver and UV radiation has been observed that can appreciably enhance the effectiveness of UV radiation for inactivation of viruses. At a fluence of ca. 40 mJ/cm(2), the synergistic effect between silver and UV was observed at silver concentrations as low as 110 mug/liter (P < 0.0615). At the same fluence, an MS-2 inactivation of ca. 3.5 logs (99.97%) was achieved at a silver concentration of 0.1 mg/liter, a significant improvement (P < 0.0001) over the ca. 1.8-log (98.42%) inactivation of MS-2 at ca. 40 mJ/cm(2) in the absence of silver. Modified Chick-Watson kinetics were used to model the synergistic effect of silver and IN radiation. For an MS-2 inactivation of 4 logs (99.99%), the coefficient of dilution (n) was determined to be 0.31, which suggests that changes in fluence have a greater influence on inactivation than does a proportionate change in silver concentration.