CAS OpenIR  > 中科院上海应用物理研究所2004-2010年
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 PublicationENVIRONMENTAL CHEMISTRY LETTERS
ISSN1610-3653
Volume8Issue:1Pages:25
AbstractA 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 BySCI
Language中文
Funding Project应物所项目组
WOS IDWOS:000275166200003
Citation statistics
Document Type期刊论文
Identifierhttp://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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