| 含盐水体中酪氨酸的光致溴代反应研究 |
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| 引用本文： | 何欣,赵红霞,刘慧,马洋帆.含盐水体中酪氨酸的光致溴代反应研究[J].环境科学学报,2018,38(7):2683-2689. |
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| 作者姓名： | 何欣 赵红霞 刘慧 马洋帆 |
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| 作者单位： | 大连理工大学环境学院工业生态与环境工程教育部重点实验室;大连海事大学环境科学与工程学院 |
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| 基金项目： | 国家自然科学基金（No.41576111，41206095） |
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| 摘 要： | 选取溶解性有机质中小分子酪氨酸(Tyr)作为研究对象,研究了含盐水体中Tyr的光降解及溴代转化.同时,探讨了pH值及天然水体中广泛存在的Fe(III)对Tyr光转化的影响.结果表明,汞灯照射下(λ290 nm),在含14.56 mg·L-1Fe(Ⅲ)的溴离子溶液中(pH=3.0),检测到Tyr(C0,Tyr=0.40 mg·L-1)反应0.5 h过程中产生了3-溴-酪氨酸(3-Br Tyr,15.97μg·L~(-1))和3,5-二溴-L-酪氨酸(3,5-di Br Tyr,10.45μg·L~(-1))两种溴代产物.在pH=3.0~8.0范围内,Tyr光降解速率随pH值升高而降低;3-Br Tyr和3,5-di Br Tyr的形成量随pH升高而减少;而在pH=3.0时,Tyr光降解速率、3-Br Tyr和3,5-di Br Tyr形成量随Fe(Ⅲ)浓度的增加而增加.这说明在自然环境中,Tyr能通过光转化形成溴代有机污染物.
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| 关 键 词： | 光转化 酪氨酸 固相萃取 高效液相色谱-串联质谱 |
| 收稿时间： | 2017/12/4 0:00:00 |
| 修稿时间： | 2018/1/25 0:00:00 |
The photocatalytic bromination of tyrosine in saline water |
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| HE Xin,ZHAO Hongxi,LIU Hui and MA Yangfan.The photocatalytic bromination of tyrosine in saline water[J].Acta Scientiae Circumstantiae,2018,38(7):2683-2689. |
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| Authors: | HE Xin ZHAO Hongxi LIU Hui and MA Yangfan |
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| Institution: | Key Laboratory of Industrial Ecology and Environmental Engineering of Ministry of Education, College of Environment, Dalian University of Technology, Dalian 116024,Key Laboratory of Industrial Ecology and Environmental Engineering of Ministry of Education, College of Environment, Dalian University of Technology, Dalian 116024,College of Environmental Sciences and Engineering, Dalian Maritime University, Dalian 116026 and Key Laboratory of Industrial Ecology and Environmental Engineering of Ministry of Education, College of Environment, Dalian University of Technology, Dalian 116024 |
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| Abstract: | |
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| Keywords: | photo-induced bromide tyrosine(Tyr) solid-phase extraction(SPE) high performance liquid chromatography-tandem mass spectrometry(HPLC-MS/MS) |
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