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首页> 外文期刊>Environmental Science & Technology >Volatile Disinfection Byproducts Resulting from Chlorination of Uric Acid: Implications for Swimming Pools
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Volatile Disinfection Byproducts Resulting from Chlorination of Uric Acid: Implications for Swimming Pools

机译：尿酸氯化导致的挥发性消毒副产物：对游泳池的影响

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摘要

Cyanogen chloride (CNCl) and trichloramine (NCl_3) are important disinfection byproducts in chlorinated swimming pools. However, some unknowns exist regarding the precursors of their formation. In this study, uric acid is shown to be an efficient precursor to formation of CNCl and NCl_3. The molar yields of CNCl and NCl_3 were observed to be as high as 44% (pH -6.0, chlorine/precursor molar ratio [Cl/P] = 6.4) and 108% (pH = 7.0, Cl/P = 30), respectively, both being strong functions of Cl/P, pH, and temperature. Analysis of swimming pool water samples, combined with the results of experiments involving chlorination of uric acid, and chlorination of body fluid analog mixtures, indicated that uric acid chlorination may account for a large fraction of CNCl formation in swimming pools. Moreover, given that uric acid introduction to pools is attributable to urination, a voluntary action for most swimmers, these findings indicate important benefits to pool water and air chemistry that could result from improved hygiene habits on the part of swimmers.
机译：氯化氰（CNCl）和三氯胺（NCl_3）是氯化泳池中重要的消毒副产物。但是，关于其形成的前体存在一些未知数。在这项研究中，尿酸被证明是形成CNC1和NCl_3的有效前体。观察到CNCl和NCl_3的摩尔产率分别高达44％（pH -6.0，氯/前体摩尔比[Cl / P] = 6.4）和108％（pH = 7.0，Cl / P = 30）。 ，两者都是Cl / P，pH和温度的强大功能。游泳池水样品的分析，加上涉及尿酸氯化和体液类似物混合物氯化的实验结果，表明尿酸氯化可能占游泳池中CNCl形成的很大一部分。此外，考虑到尿酸被引入游泳池是由于排尿，这是大多数游泳者的自愿行为，这些发现表明，游泳者改善卫生习惯可能会为游泳池的水和空气化学物质带来重要好处。

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  • 来源
    《Environmental Science & Technology》 |2014年第6期|3210-3217|共8页
  • 作者

    Lushi Lian; Yue E; Jing Li; Ernest R. Blatchley III;

  • 作者单位

    Department of Applied Chemistry, China Agricultural University, Beijing 100193, People's Republic of China;

    Department of Applied Chemistry, China Agricultural University, Beijing 100193, People's Republic of China;

    Department of Applied Chemistry, China Agricultural University, Beijing 100193, People's Republic of China;

    School of Civil Engineering, Purdue University, 550 Stadium Mall Drive, West Lafayette, Indiana, 47907-2051, United States;

  • 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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