Catalytic solid substrate-room temperature phosphorimetry for the determination of trace As(V) based on oxidising reaction between hydrogen peroxide and fullerenol using tween-80 as sensitizer

Jia-Ming Liu; Fei Gao; Tian-Long Yang; Jian-Hua Lai; Zhi-Ming Li

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Catalytic solid substrate-room temperature phosphorimetry for the determination of trace As(V) based on oxidising reaction between hydrogen peroxide and fullerenol using tween-80 as sensitizer

机译：吐温80敏化剂催化过氧化氢与富勒烯醇之间的氧化反应催化固体基质室温荧光法测定痕量As（V）

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摘要

A new catalytic solid substrate-room temperature phosphorimetry (SS-RTP) for the determination of trace arsenic(V) has been established. It is based on the fact that fullerenol (F-ol) emitted strong and stable room temperature phosphorescence (RTP) on nitric acid cellulose membrane (NCM) substrate. H_2O_2 could oxidise F-ol to cause the quenching of RTP. As(V) could catalyse H_2O_2 to oxidise F-ol and decrease the RTP signal of F-ol sharply. After adding tween-80 in the system, its ΔI_p enhanced 7.7 times compared with the without-tween-80 levels. Under the optimum conditions, the linear dynamic range of this method was 0.016-11.2 ag spot~(-1) with a detection limit (LD) of 9.3 zg spot~(-1) (corresponding concentration: 2.3 × 10~(-17)gm L~(-1)). This sensitive, simple and selective method has been successfully applied to the determination of trace As(V) in human hair and tea samples. The reaction mechanism for SS-RTP is also discussed.

机译：建立了一种测定痕量砷（V）的新型催化固体基质室温荧光法（SS-RTP）。基于以下事实：富勒烯醇（F-ol）在硝酸纤维素膜（NCM）基材上发出强而稳定的室温磷光（RTP）。 H_2O_2可能氧化F-ol导致RTP淬灭。 As（V）可以催化H_2O_2氧化F-ol，急剧降低F-ol的RTP信号。在系统中添加补间80之后，其ΔI_p与不补间80相比提高了7.7倍。在最佳条件下，该方法的线性动态范围为0.016-11.2 ag spot〜（-1），检出限（LD）为9.3zg spot〜（-1）（对应浓度为2.3×10〜（-17） gm L〜（-1））。该灵敏，简单和选择性的方法已成功应用于人发和茶样品中痕量As（V）的测定。还讨论了SS-RTP的反应机理。

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来源
《International journal of environmental analytical chemistry》 |2008年第9期|p.613-624|共12页
作者
Jia-Ming Liu; Fei Gao; Tian-Long Yang; Jian-Hua Lai; Zhi-Ming Li;
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作者单位

Department of Chemistry and Environmental Science, Zhangzhou Normal College, Zhangzhou Fujian, China;

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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);
原文格式 PDF
正文语种 eng
中图分类分析化学;环境科学、安全科学;
关键词
arsenic(V); fullerenol; tween-80; catalytic solid substrate-room temperature phosphorimetry;

机译：砷（V）;富勒烯醇;吐温80;催化固体底物室温磷光法;

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Catalytic solid substrate-room temperature phosphorimetry for the determination of trace As(V) based on oxidising reaction between hydrogen peroxide and fullerenol using tween-80 as sensitizer

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