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A novel resorufin based fluorescent “turn-on” probe for the selective detection of hydrazine and application in living cells
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作者 Tun Tang Yu-Qi Chen +6 位作者 Bo-Shi Fu Zhi-Yong He Heng Xiao Fan Wu Jia-Qi Wang Shao-Ru Wang Xiang Zhou 《中国化学快报:英文版》 SCIE CAS CSCD 2016年第4期540-544,共5页
In this study, a resorufin derivative RTP-1, which is a novel fluorescent ‘‘turn-on’’ probe for sensitive detection of hydrazine within 30 min, is designed and synthesized. The selective deprotection of the ester ... In this study, a resorufin derivative RTP-1, which is a novel fluorescent ‘‘turn-on’’ probe for sensitive detection of hydrazine within 30 min, is designed and synthesized. The selective deprotection of the ester group of the probe by hydrazine led to a prominent enhancement of fluorescent intensity, as well as a remarkable color change from colorless to pink, which could be distinguished by naked eye. The fluorescence enhancement showed decent linear relationship with hydrazine concentration ranging from 0 to 50 mmol/L, with a detection limit of 0.84 mmol/L. The specificity of RTP-1 for hydrazine to a number of metal ions, anions and amines is satisfactory. The sensing mechanism of RTP-1 and hydrazine was evaluated by HPLC, ESI mass spectrometry and density functional theory(DFT).Moreover, we have utilized this fluorescent probe for imaging hydrazine in living cells, and the fluorescence was clearly observed when the cells were incubated with hydrazine(100 mmol/L) for 30 min. 展开更多
关键词 选择性检测 活细胞成像 荧光探针 水合肼 CYP2E1 应用 密度泛函理论 HPLC法
再生水无计划间接补充饮用水的雌激素健康风险 被引量:3
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作者 吴乾元 邵一如 +2 位作者 王超 孙艳 胡洪营 《环境科学》 CAS CSCD 北大核心 2014年第3期1041-1050,共10页
以城市污水为水源的再生水中含有一定量的雌激素类内分泌干扰物,其在无计划间接补充饮用水过程中存在潜在健康风险.针对再生水经河流补给湖库型水源地的典型场景,研究了再生水中雌酮、雌二醇、17α-乙炔基雌二醇、双酚A、壬基酚和辛... 以城市污水为水源的再生水中含有一定量的雌激素类内分泌干扰物,其在无计划间接补充饮用水过程中存在潜在健康风险.针对再生水经河流补给湖库型水源地的典型场景,研究了再生水中雌酮、雌二醇、17α-乙炔基雌二醇、双酚A、壬基酚和辛基酚在水体中的变化规律,评价了雌激素的健康风险.结果表明,再生水(二级出水)中雌激素类物质的质量浓度多分布在0.1-100ng·L^-1水平;双酚A和壬基酚的浓度较高,可达到1—10μg·L^-1水平.再生水间接补充饮用水过程中,雌激素的浓度受到上游来水稀释、河道湖库自然降解和饮用水处理工艺去除等作用的影响.雌酮、雌二醇、双酚A、壬基酚和辛基酚的非致癌风险较小,都低于规定值1.当湖库型水源地的水力停留时间大于30d时,再生水中17α-乙炔基雌二醇对人体的非致癌风险值大多小于1;当停留时间小于10d且再生水占饮用水比例达50%以上时,16%-47%样品的17α-乙炔基雌二醇的非致癌风险值大于1,其健康风险需优先关注. 展开更多
关键词 再生水 无计划间接补充饮用水 雌激素 健康风险评价 非致癌风险 水源
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