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首页> 外文期刊>RSC Advances >Photodegradation of sulfadiazine catalyzed by p-benzoquinones and picric acid: application to charge transfer complexes
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Photodegradation of sulfadiazine catalyzed by p-benzoquinones and picric acid: application to charge transfer complexes

机译：P-苯并醌和PECRIC酸催化的光降解：施用电荷转移复合物

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摘要

As the treatment of effluents containing the antibiotic drug sulfadiazine (SZ) is one of the challenging problems in the field of environmental chemistry, it is essential to determine the concentration of SZ by a rapid and accurate method and then find a suitable method to degrade the assayed products into harmless chemicals. The color of the charge transfer (CT) complexes developed from the reaction of SZ with 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ), chloranilic acid (CHL) and picric acid (PA) was used to determine the concentration of SZ at 528, 510 and 410 nm, respectively. The Lambert-Beer's law is obeyed in the ranges of 6.80-68.06, 13.61-136.12 and 6.80-27.22 mu g mL(-1) for DDQ, CHL and PA complexes. The photolysis of SZ -> DDQ in presence of sodium nitrite at 256 nm leads to faster degradation of SZ compared with the control experiments. This was simply spectrophotometrically followed by a decrease in the intensity of the CT band. The effect of some additives such as oxalic acid, and hematite nano particles was studied. For comparison, other pi-acceptor reagents such as CHL and PA were used. About 80% of SZ is degraded in 45 min upon the illumination of SZ -> DDQ at 256 nm, whereas 90 min is required in the case of CHL and PA to attain the same degradation limit.
机译：作为含有抗生素药物磺胺嘧啶（SZ）流出物的处理是在环境化学领域的挑战性的问题之一，它是必不可少的通过一个快速，准确的方法来确定SZ的浓度，然后找到合适的方法来降解分析产品转化为无害的化学物质。电荷转移（CT）的颜色从络合物SZ与2,3-二氯-5,6-二氰基-1,4-苯醌（DDQ），氯醌酸（CHL）和苦味酸（PA）的反应是开发用于确定SZ的浓度在528，510和410nm处，分别。朗伯 - 比尔定律在6.80-68.06，13.61-136.12和6.80-27.22亩克毫升的范围（-1）DDQ，CHL和PA络合物服从。 SZ的光解 - > DDQ在256根纳米导线亚硝酸钠的存在下，以SZ的更快的降解与对照实验相比较。这是简单地通过分光光度法随后在CT条带的强度的降低。某些添加剂，例如草酸，和赤铁矿纳米颗粒的影响进行了研究。为了比较，使用其它的π受体试剂如CHL和PA。关于SZ的80％在45分钟内于SZ的照明降解 - > DDQ在256纳米，而90分钟在CHL和PA的情况下，需要获得相同的降解的限制。

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  • 来源
    《RSC Advances》 |2017年第63期|共8页
  • 作者

    Mansour Ahmed M.; Soliman Fatma A.; Shehab Ola R.; Abdel-Ghani Nour T.;

  • 作者单位

    Cairo Univ Fac Sci Dept Chem Gamma St Cairo 12613 Egypt;

    Cairo Univ Fac Sci Dept Chem Gamma St Cairo 12613 Egypt;

    Cairo Univ Fac Sci Dept Chem Gamma St Cairo 12613 Egypt;

    Cairo Univ Fac Sci Dept Chem Gamma St Cairo 12613 Egypt;

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  • 正文语种 eng
  • 中图分类 化学;
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