| №Determination of Trace Arsenic by Solid Substrate-Room Temperature Phosphorescence Quenching Method Based on the Catalyzed Reaction of H2O2 Oxidizing 9-Hyd roxy-2,3,4,9-tet rahyd ro-1,10-anth raquinone |
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| 引用本文： | 胡世荣 温泉 孔祥斌 骆彩颖 陈惠华 陈丽芬 张玉平. №Determination of Trace Arsenic by Solid Substrate-Room Temperature Phosphorescence Quenching Method Based on the Catalyzed Reaction of H2O2 Oxidizing 9-Hyd roxy-2,3,4,9-tet rahyd ro-1,10-anth raquinone[J]. 中国化学, 2007, 25(4): 527-530. DOI: 10.1002/cjoc.200790098 |
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| 作者姓名： | 胡世荣 温泉 孔祥斌 骆彩颖 陈惠华 陈丽芬 张玉平 |
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| 作者单位： | [1]Department of Chemistry and Environment Science, Zhangzhou Normal College, Zhangzhou, Fujian 363000, China [2]Department of Applied Chemistry, Liaoning Petroleum Chemical Industry Professional Technology College, Jinzhou, Liaoning 121001, China |
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| 基金项目： | Project supported by the Natural Scientific Foundation of Fujian Province （No. D0510027） and the Natural Scientific Foundation of Education Committee of Fujian Province （No. JB05005）. |
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| 摘 要： | A new solid substrate-room temperature phosphorescence （SS-RTP） quenching method for the determination of trace As（V） has been developed, based on the facts that 9-hydroxy-2,3,4,9-tetrahydro-1,10-anthraquinone （R） can emit intense and stable SS-RTP on solid substrate, and α,α＇-dipyridyl can activate As（V） catalysis of the reaction of H2O2 oxidizing R to non-phosphorescence compound R＇, which can cause the sharp quenching of SS-RTP. Under the optimum condition, the relationship between the ΔIp of the emitting intensity and 1.60-160 fg·spot^-1 As（V） （corresponding concentration： 0.0040-0.40 ng·mL^-1, sample volume： 0.4 μL·spot^-1） conformed to Beer＇ law. The regression equation of working curve can be expressed as ΔIp= 20.46＋0.5492CAs（v） fig·spot^-1） （r= 0.9995, n = 6）. The limit detection （LD） is 0.27 fg·spot^-1 [As（V） corresponding concentration： 6.8 × 10^-13 g·mL^-1, n=11]. The samples containing 0.0040 and 0.40 ng·mL^-1 As（V） were repeatedly determined for 11 times. RSD are 3.0% and 2.7% respectively. The SS-RTP mechanism was also discussed. R was synthesized in this paper. Meanwhile, the structure was determined by NMR, IR, mass spectra and elemental analysis.
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| 关 键 词： | 痕量砷 测定 固体基质 室温磷光猝灭法 催化反应 过氧化氢 9-羟基-2,3,4,9-四氢-1,10-蒽醌 |
| 修稿时间： | 2006-05-292006-12-17 |
№Determination of Trace Arsenic by Solid Substrate-Room Temperature Phosphorescence Quenching Method Based on the Catalyzed Reaction of H2O2 Oxidizing 9-Hyd roxy-2,3,4,9-tet rahyd ro-1,10-anth raquinone |
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| HU Shi-Rong, LU Cai-Ying,WEN Quan, KNG Xiang-Bin,CHEN Hui-Hua, CHEN Li-Fen, ZHANG Yu-Ping. №Determination of Trace Arsenic by Solid Substrate-Room Temperature Phosphorescence Quenching Method Based on the Catalyzed Reaction of H2O2 Oxidizing 9-Hyd roxy-2,3,4,9-tet rahyd ro-1,10-anth raquinone[J]. Chinese Journal of Chemistry, 2007, 25(4): 527-530. DOI: 10.1002/cjoc.200790098 |
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| Authors: | HU Shi-Rong LU Cai-Ying WEN Quan KNG Xiang-Bin CHEN Hui-Hua CHEN Li-Fen ZHANG Yu-Ping |
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| Affiliation: | 1.Department of Chemistry and Environment Science, Zhangzhou Normal College, Zhangzhou, Fujian 363000, China; 2. Department of Applied Chemistry, Liaoning Petroleum Chemical Industry Professional Technology College, Jinzhou, Liaoning 121001, China |
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| Abstract: | A new solid substrate‐room temperature phosphorescence (SS‐RTP) quenching method for the determination of trace As(V) has been developed, based on the facts that 9‐hydroxy‐2,3,4,9‐tetrahydro‐1,10‐anthraquinone ( R ) can emit intense and stable SS‐RTP on solid substrate, and α,α′‐dipyridyl can activate As(V) catalysis of the reaction of H2O2 oxidizing R to non‐phosphorescence compound R′ , which can cause the sharp quenching of SS‐RTP. Under the optimum condition, the relationship between the ΔIp of the emitting intensity and 1.60–160 fg·spot?1 As(V) (corresponding concentration:0.0040–0.40 ng·mL?1, sample volume:0.4 µL·spot?1) conformed to Beer′ law. The regression equation of working curve can be expressed as ΔIp?20.46+0.5492cAs(V) (fg·spot?1) (r=0.9995, n=6). The limit detection (LD) is 0.27 fg·spot?1 [As(V) corresponding concentration:6.8×10?13 g·mL?1, n=11]. The samples containing 0.0040 and 0.40 ng·mL?1 As(V) were repeatedly determined for 11 times. RSD are 3.0% and 2.7% respectively. The SS‐RTP mechanism was also discussed. R was synthesized in this paper. Meanwhile, the structure was determined by NMR, IR , mass spectra and elemental analysis. |
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| Keywords: | arsenic phosphorescence α α＇-dipyridyl anthraquinone |
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