Gas-phase reaction of herbicide 2-methyl-4-chlorophenoxy acetic acid(MCPA) with OH radicals

Lei Han; Tong Zhu; Feng Long Sun; Jing Shang

Gas-phase reaction of herbicide 2-methyl-4-chlorophenoxy acetic acid(MCPA) with OH radicals

Lei Han^*
, Tong Zhu
, Feng Long Sun
, Jing Shang

^*Corresponding author for this work

Peking University

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

The investigations about the atmospheric degradation of organic herbicides became more and more important in China. In our present research, the rate constant of the reaction of 2-methyl-4-chlorophenoxy acetic acid (MCPA) with ^·OH radicals was measured by a long path quartz reactor connected with Fourier Transform Infrared Spectroscopy(FTIR). At 23°C and under one atmosphere, the rate constant was determined to be 2.67×10^-11cm³/(s·mol), the atmospheric life time of MCPA was estimated to be 14.9 h. The results show that MCPA can be degraded in atmosphere and is not feasible to cause wide-spreading and persisting pollution through long range atmospheric transport.

Original language	English
Pages (from-to)	112-115
Number of pages	4
Journal	Gaodeng Xuexiao Huaxue Xuebao/Chemical Journal of Chinese Universities
Volume	27
Issue number	1
Publication status	Published - Jan 2006
Externally published	Yes

Keywords

2-Methyl-4-chlorophenoxy acetic acid (MCPA)
Herbicide
OH radical
Reaction rate constant

Cite this

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title = "Gas-phase reaction of herbicide 2-methyl-4-chlorophenoxy acetic acid(MCPA) with OH radicals",

abstract = "The investigations about the atmospheric degradation of organic herbicides became more and more important in China. In our present research, the rate constant of the reaction of 2-methyl-4-chlorophenoxy acetic acid (MCPA) with ·OH radicals was measured by a long path quartz reactor connected with Fourier Transform Infrared Spectroscopy(FTIR). At 23°C and under one atmosphere, the rate constant was determined to be 2.67×10-11cm3/(s·mol), the atmospheric life time of MCPA was estimated to be 14.9 h. The results show that MCPA can be degraded in atmosphere and is not feasible to cause wide-spreading and persisting pollution through long range atmospheric transport.",

keywords = "2-Methyl-4-chlorophenoxy acetic acid (MCPA), Herbicide, OH radical, Reaction rate constant",

author = "Lei Han and Tong Zhu and Sun, \{Feng Long\} and Jing Shang",

year = "2006",

month = jan,

language = "English",

volume = "27",

pages = "112--115",

journal = "Gaodeng Xuexiao Huaxue Xuebao/Chemical Journal of Chinese Universities",

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TY - JOUR

T1 - Gas-phase reaction of herbicide 2-methyl-4-chlorophenoxy acetic acid(MCPA) with OH radicals

AU - Han, Lei

AU - Zhu, Tong

AU - Sun, Feng Long

AU - Shang, Jing

PY - 2006/1

Y1 - 2006/1

N2 - The investigations about the atmospheric degradation of organic herbicides became more and more important in China. In our present research, the rate constant of the reaction of 2-methyl-4-chlorophenoxy acetic acid (MCPA) with ·OH radicals was measured by a long path quartz reactor connected with Fourier Transform Infrared Spectroscopy(FTIR). At 23°C and under one atmosphere, the rate constant was determined to be 2.67×10-11cm3/(s·mol), the atmospheric life time of MCPA was estimated to be 14.9 h. The results show that MCPA can be degraded in atmosphere and is not feasible to cause wide-spreading and persisting pollution through long range atmospheric transport.

AB - The investigations about the atmospheric degradation of organic herbicides became more and more important in China. In our present research, the rate constant of the reaction of 2-methyl-4-chlorophenoxy acetic acid (MCPA) with ·OH radicals was measured by a long path quartz reactor connected with Fourier Transform Infrared Spectroscopy(FTIR). At 23°C and under one atmosphere, the rate constant was determined to be 2.67×10-11cm3/(s·mol), the atmospheric life time of MCPA was estimated to be 14.9 h. The results show that MCPA can be degraded in atmosphere and is not feasible to cause wide-spreading and persisting pollution through long range atmospheric transport.

KW - 2-Methyl-4-chlorophenoxy acetic acid (MCPA)

KW - Herbicide

KW - OH radical

KW - Reaction rate constant

UR - https://www.scopus.com/pages/publications/32844471759

M3 - Article

AN - SCOPUS:32844471759

SN - 0251-0790

VL - 27

SP - 112

EP - 115

JO - Gaodeng Xuexiao Huaxue Xuebao/Chemical Journal of Chinese Universities

JF - Gaodeng Xuexiao Huaxue Xuebao/Chemical Journal of Chinese Universities

IS - 1

ER -

Gas-phase reaction of herbicide 2-methyl-4-chlorophenoxy acetic acid(MCPA) with OH radicals

Abstract

Keywords

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