| Determination of Utratrace Silver Using Surfactant As Sensitizer by Catalytic Near Field Laser Thermal Lens Spectrometry |
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| 引用本文： | Quan HAN,Hong Tao YAN*,Zhen Jie QIAN Department of Chemistry,Northwest University,Xi抋n 710069. Determination of Utratrace Silver Using Surfactant As Sensitizer by Catalytic Near Field Laser Thermal Lens Spectrometry[J]. 中国化学快报, 2002, 13(12) |
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| 作者姓名： | Quan HAN Hong Tao YAN* Zhen Jie QIAN Department of Chemistry Northwest University Xi抋n 710069 |
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| 作者单位： | Quan HAN，Hong Tao YAN*，Zhen Jie QIAN Department of Chemistry，Northwest University，Xi抋n 710069 |
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| 摘 要： | Thermal lens spectrometry (TLS) is an excellent tool for trace analysis1. TLS allows the detection of absorbances of 10-7～10-8, concentration of ≈ 10-11 mol稬-1 and the analysis of 10-15 L volumes with ≈10-2 absorbing molecules2. Kinetic analysis is playing an increasingly important part in modern analytical chemistry. Therefore, TLS shows much promise in combination with kinetic analysis. However, there are few data on TLS applications in kinetic analysis method so far3～4. A ne…
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| 关 键 词： | α α′-bipy activator |
Determination of Utratrace Silver Using Surfactant As Sensitizer by Catalytic Near Field Laser Thermal Lens Spectrometry |
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| Quan HAN,Hong Tao YAN,Zhen Jie QIAN. Determination of Utratrace Silver Using Surfactant As Sensitizer by Catalytic Near Field Laser Thermal Lens Spectrometry[J]. Chinese Chemical Letters, 2002, 13(12) |
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| Authors: | Quan HAN Hong Tao YAN Zhen Jie QIAN |
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| Abstract: | A new method for the determination of utratrace silver(I) by near field thermal lens spectrometry has been developed. This method is based on the silver(I) catalyzed discoloring reaction of bromocresol green oxidized by sodium persulphate in the presence of α, α′-bipy as activator and Triton X-100 as sensitizer. The linear range of this method is 0～1.6 ng@mL-1 of silver. The detection limit is 2×10-2 ng@mL-1. The method has been applied to the determination of silver in lead power and photographic paper with satisfactory results. |
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| Keywords: | Thermal lens spectrometry kinetic method of analysis silver determination a a-bipy activator Triton X-100 sensitizer. |
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