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Wavelength-Dependent Photochemistry of Acetaminophen in Aqueous Solutions Full article

Journal

Journal of Photochemistry and Photobiology A: Chemistry
ISSN: 1010-6030 , E-ISSN: 1873-2666

Output data

Year: 2014, Volume: 274, Pages: 117-123 Pages count : 7 DOI: 10.1016/j.jphotochem.2013.10.006

Tags

Acetaminophen, Phenoxyl radical, Photo-Fries reaction, Photodegradation, Photoionization, Water treatment

Authors

Pozdnyakov Ivan P. ^1,2 , Zhang Xu ³ , Maksimova Tatiana A. ^1,2 , Yanshole Vadim V. ^2,4 , Wu Feng ³ , Grivin Vjacheslav P. ^1,2 , Plyusnin Victor F. ^1,2

Affiliations

1	V.V. Voevodsky Institute of Chemical Kinetics and Combustion, 3 Institutskaya str., 630090 Novosibirsk, Russian Federation
2	Novosibirsk State University, 2 Pirogova St., 630090 Novosibirsk, Russian Federation
3	Department of Environmental Science, Hubei Biomass-Resource Chemistry and Environmental Biotechnology Key Laboratory, Wuhan University, Wuhan 430079, PR China
4	International Tomography Center, 3a Institutskaya str., 630090 Novosibirsk, Russian Federation

Funding (7)

1	Russian Foundation for Basic Research	11-03-00268
2	Russian Foundation for Basic Research	12-03-00482
3	Russian Foundation for Basic Research	12-03-91153
4	National Natural Science Foundation of China	21207104
5	National Natural Science Foundation of China	21211120159
6	National Natural Science Foundation of China	21281220200
7	Science and Technology Department of Hubei Province	2011CDB274

The influence of irradiation wavelength and intensity on photochemistry of acetaminophen (APAP) in aqueous solution was investigated by combination of steady-state and laser flash photolysis as well as HPLC and LC–MS. Steady-state irradiation at 254 nm leads to APAP disappearance with the quantum yield 0.0014 and to formation of 1-(2-amino-5-hydroxyphenyl)ethanone (P1) as a main primary photo-Fries product. In opposite the laser excitation at 266 nm leads predominantly to two-photon ionization of APAP with the quantum yield 0.013 (I = 70 mJ/cm2) and to the formation of one main product of phenoxyl radical reactions – N-(3,4-dihydroxyphenyl)acetamide (P5). Steady-state excitation at 282 nm leads to both P1 and P5 products formation indicating competition of photo-Fries and photoionization processes. The wavelength-dependent mechanism of APAP photolysis is proposed and discussed.

Pozdnyakov I.P. , Zhang X. , Maksimova T.A. , Yanshole V.V. , Wu F. , Grivin V.P. , Plyusnin V.F.
Wavelength-Dependent Photochemistry of Acetaminophen in Aqueous Solutions
Journal of Photochemistry and Photobiology A: Chemistry. 2014. V.274. P.117-123. DOI: 10.1016/j.jphotochem.2013.10.006 WOS Scopus РИНЦ ANCAN OpenAlex

Submitted:	Aug 14, 2013
Accepted:	Oct 10, 2013
Published online:	Oct 26, 2013
Published print:	Jan 30, 2014

Web of science:	WOS:000327754900016
Scopus:	2-s2.0-84887133074
Elibrary:	21861078
Chemical Abstracts:	2013:1793422
Chemical Abstracts (print):	161:674253
OpenAlex:	W2106270847

DB	Citing
Web of science	28
Scopus	29
OpenAlex	30