PMID- 37067709
OWN - NLM
STAT- MEDLINE
DCOM- 20230512
LR  - 20230512
IS  - 1614-7499 (Electronic)
IS  - 0944-1344 (Linking)
VI  - 30
IP  - 23
DP  - 2023 May
TI  - A microwave-induced plasma jet for efficient degradation of methomyl in aqueous 
      solution.
PG  - 64352-64362
LID - 10.1007/s11356-023-26866-w [doi]
AB  - As a typical carbamate pesticide, methomyl was once widely used in agriculture 
      for its excellent broad-spectrum insecticidal effect. However, due to its high 
      toxicity, long half-life, and difficult degradation properties, it poses a 
      serious challenge to water environment pollution. In this study, an 
      electrode-free discharge microwave-induced plasma technology was used to rapidly 
      and efficiently degrade methomyl in aqueous solution. In this experiment, the 
      statistical design of experiments (DOE) was adopted to optimize the plasma 
      degradation parameters. Under the optimized parameters (P = 140 W, D = 0 mm, 
      R = 0.5 L/min), 78.4% removal of 50 mg/L of methomyl was achieved after 8 min. 
      The optical emission spectrometry and free radical detection experiments showed 
      that the active substances generated by the collision reaction between plasma and 
      water molecules occurring at the gas-liquid interface were the key factors to 
      exert the degradation effect. The degradation rate of methomyl decreased by 73.2% 
      after the addition of tert-butanol (OH burster), while it decreased by only about 
      12.0% after the addition of peroxidase. These implied that ∙OH was largely 
      responsible for methomyl degradation. In addition, based on the detected 
      intermediates, possible degradation mechanisms and pathways were analyzed.
CI  - (c) 2023. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, 
      part of Springer Nature.
FAU - Qian, Cheng
AU  - Qian C
AD  - Shaanxi Key Laboratory of Earth Surface System and Environmental Carrying 
      Capacity, College of Urban and Environmental Sciences, Northwest University, 
      Xi'an, 710127, China.
FAU - Ma, Jie
AU  - Ma J
AD  - Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry 
      of Education, College of Chemistry & Materials Science, Northwest University, 
      Xi'an 710127, China.
FAU - Wu, Qiong
AU  - Wu Q
AD  - Analysis & Testing Center, Chinese Academy of Tropical Agricultural Sciences, 
      Haikou, 571101, China. 245925647@qq.com.
LA  - eng
GR  - 322RC793/Hainan Provincial Natural Science Foundation of China/
PT  - Journal Article
DEP - 20230417
PL  - Germany
TA  - Environ Sci Pollut Res Int
JT  - Environmental science and pollution research international
JID - 9441769
RN  - 1NQ08HN02S (Methomyl)
RN  - 0 (Insecticides)
RN  - 0 (Pesticides)
RN  - 059QF0KO0R (Water)
SB  - IM
MH  - Methomyl/analysis/chemistry
MH  - Microwaves
MH  - *Insecticides/analysis
MH  - *Pesticides/analysis
MH  - Water/chemistry
OTO - NOTNLM
OT  - Degradation
OT  - Mechanism
OT  - Methomyl
OT  - Microwave-induced plasma
OT  - Plackett-Burman design
EDAT- 2023/04/18 06:00
MHDA- 2023/05/12 07:06
CRDT- 2023/04/17 11:21
PHST- 2022/11/11 00:00 [received]
PHST- 2023/04/03 00:00 [accepted]
PHST- 2023/05/12 07:06 [medline]
PHST- 2023/04/18 06:00 [pubmed]
PHST- 2023/04/17 11:21 [entrez]
AID - 10.1007/s11356-023-26866-w [pii]
AID - 10.1007/s11356-023-26866-w [doi]
PST - ppublish
SO  - Environ Sci Pollut Res Int. 2023 May;30(23):64352-64362. doi: 
      10.1007/s11356-023-26866-w. Epub 2023 Apr 17.