Knowledge Management System Of Shanghai Institute of Applied Physics, CAS
| Photolytical property of L(+)-alpha-phenylglycine in aqueous solution | |
| Wu, MH; Shi, WY; Zhang, HJ; Jiao, Z; Chen, J; Yao, SD（姚思德）; Ding, GJ; Fu, JM | |
| 2010 | |
| Source Publication | ENVIRONMENTAL CHEMISTRY LETTERS
 |
| ISSN | 1610-3653 |
| Volume | 8Issue:1Pages:25 |
| Abstract | A wide range of pharmaceutical compounds have been identified in the environment, and their existence is a topic of growing concern, both for human and ecological health. The work described here has investigated the photolytic properties of L(+)-alpha-phenylglycine (L-alpha-PG-H) in aqueous solution as it can be degraded by photo-catalysis. In 266 nm laser flash photolysis of aqueous solution of L-alpha-PG-H saturated with nitrogen, two transient absorption bands are observed at 280-330 nm and 450-800 nm, respectively, due to L-alpha-PG-H radical cation and hydrated electrons (e(aq)(-)). Then e(aq)(-) reacts with L-alpha-PG-H to form the L-alpha-PG-H radical anion. Decaying rate constants of e(aq)(-) observed at 720 nm is to be 8.9 x 10(8) dm(3) mol(-1) s(-1). The rate constant for oxidation of L-alpha-PG-H by SO(4)(-) is calculated as 4.5 x 10(8) and 4.3 x 10(8) s(-1) mol(-1) dm(3), respectively. The dissociation constants (pKa) of L-alpha-PG-H is 3. Excited triplet of L-alpha-PG-H in solution is formed by laser flash photolysis. The quench rate constant of L-alpha-PG-H excited triplet (k(s)) is determined to be 1.3 x 10(7) dm(3) mol(-1) s(-1) and k(0) is equal to 1.7 x 10(5) s(-1). |
| Indexed By | SCI |
| Language | 中文 |
| Funding Project | 应物所项目组 |
| WOS ID | WOS:000275166200003 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.sinap.ac.cn/handle/331007/9427 |
| Collection | 中科院上海应用物理研究所2004-2010年 |
| Recommended Citation GB/T 7714 | Wu, MH,Shi, WY,Zhang, HJ,et al. Photolytical property of L(+)-alpha-phenylglycine in aqueous solution[J]. ENVIRONMENTAL CHEMISTRY LETTERS,2010,8(1):25. |
| APA | Wu, MH.,Shi, WY.,Zhang, HJ.,Jiao, Z.,Chen, J.,...&Fu, JM.(2010).Photolytical property of L(+)-alpha-phenylglycine in aqueous solution.ENVIRONMENTAL CHEMISTRY LETTERS,8(1),25. |
| MLA | Wu, MH,et al."Photolytical property of L(+)-alpha-phenylglycine in aqueous solution".ENVIRONMENTAL CHEMISTRY LETTERS 8.1(2010):25. |
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