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Details for article 4 of 34 found articles
| Title: |
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 |
| Author: |
Liu, Jia-Ming Gao, Fei Yang, Tian-Long Lai, Jian-Hua Li, Zhi-Ming |
| Appeared in: |
International journal of environmental analytical chemistry |
| Paging: | Volume 88 (2008) nr. 9 pages 613-624 |
| Year: |
2008-08 |
| Contents: |
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. H2O2 could oxidise F-ol to cause the quenching of RTP. As(V) could catalyse H2O2 to oxidise F-ol and decrease the RTP signal of F-ol sharply. After adding tween-80 in the system, its ΔIp 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 g mL-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. |
| Publisher: |
Taylor & Francis |
| Source file: |
Elektronische Wetenschappelijke Tijdschriften |
Details for article 4 of 34 found articles
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