Molecular Probe for the Determination of Hydroxyl Radicals in Heterogeneous Systems : Coumarin

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	Molecular Probe for the Determination of Hydroxyl Radicals in Heterogeneous Systems : Coumarin
	Zhang Shuzhen; Han Ruixia; Lu Jitao
刊名	CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE
	2018-12-10
卷号	39 期号:12 页码:2658-2664
关键词	Hydroxyl radical Fluorescence probe Coumarin Microbe-mineral
ISSN号	0251-0790
文献子类	Article
英文摘要	Three common molecular probes-disodium terephthalate (TPA) , sodium benzoate (BA ) and coumarin(COU) , with the corresponding transformation products of which are 2-hydroxyterephthalic acid (hTPA) , salicylic acid (SA) and 7-hydroxycoumarin (7-hCOU ) were assessed, respectively. The results showed that transformation products of TPA and BA were adsorbed seriously on ferrihydrite (the maximum adsorption capacity were 2. 49 and 2. 09 mg/g , respectively) , which made them unsuitable to be used in heterogeneous systems. Moreover, COU was much better than TPA and BA in terms of sensitivity, linearity and concentration range responded to center dot OH. And 7-hCOU had lower limit of detection than hTPA and SA (0. 005 , 0. 046 and 0. 072 mu mol/L , respectively) . COU was further demonstrated to be capable of quantifying center dot OH produced in microbe-mineral systems and soil and sediment systems during redox cycle , where it showed great stability and reproducibility. It proved to be a reasonable molecular probe to apply to other center dot OH production processes in heterogeneous systems and natural environment. Notably, it should be in the same pH buffer when comparing center dot OH concentration between different systems since the pH has a great influence on the center dot OH production.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/40989]
专题	生态环境研究中心_环境化学与生态毒理学国家重点实验室
推荐引用方式 GB/T 7714	Zhang Shuzhen,Han Ruixia,Lu Jitao. Molecular Probe for the Determination of Hydroxyl Radicals in Heterogeneous Systems : Coumarin[J]. CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE,2018,39(12):2658-2664.
APA	Zhang Shuzhen,Han Ruixia,&Lu Jitao.(2018).Molecular Probe for the Determination of Hydroxyl Radicals in Heterogeneous Systems : Coumarin.CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE,39(12),2658-2664.
MLA	Zhang Shuzhen,et al."Molecular Probe for the Determination of Hydroxyl Radicals in Heterogeneous Systems : Coumarin".CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE 39.12(2018):2658-2664.