Newly designed molecularly imprinted 3-aminophenol-glyoxal-urea resin as hydrophilic solid-phase extraction sorbent for specific simultaneous determination of three plant growth regulators in green bell peppers.
Food Chem
; 311: 125999, 2020 May 01.
Article
in En
| MEDLINE
| ID: mdl-31864185
ABSTRACT
A method based on solid-phase extraction (SPE) coupled with high-performance liquid chromatography (HPLC) was developed to determine the content of 4-chlorophenoxy acetic acid (PCPA), naphthylacetic acid (NAA) and 2,4-dichlorophenoxyacetic acid (2,4-D) in green bell peppers. A molecularly imprinted 3-aminophenol-glyoxal-urea resin (MIAGUR) was first synthesized as a specific SPE adsorbent, which exhibited special selectivity and multiple adsorption interactions including hydrogen bonding and π-π interactions. The quantities of PCPA, NAA and 2,4-D in green bell peppers from 20 samples scattered throughout Baoding city (Hebei province, China) were determined using the proposed method. The results suggested that the use of PCPA, NAA and 2,4-D in green bell peppers from Baoding's markets is almost in fair. Moreover, MIAGUR-SPE-HPLC is suitable for the specific simultaneous monitoring of PCPA, NAA, and 2,4-D in green bell peppers and has potential applications in determination of PCPA, NAA, and 2,4-D of other plant products.
Key words
2,4-dichlorophenoxyacetic acid (PubChem CID: 1486); 3-aminophenol (PubChem CID: 11568); 4-chlorophenoxyacetic acid (PubChem CID: 26229); 4-chlorosalicylic acid (PubChem CID: 78782); Food security; Green bell pepper; Molecularly imprinted 3-aminophenol-glyoxal-urea resin; Plant growth regulators; Selective adsorption; glyoxal (PubChem CID: 7860); naphthylacetic acid (PubChem CID: 6862); urea (PubChem CID: 1176)
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Plant Growth Regulators
/
Urea
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Capsicum
/
Molecular Imprinting
Language:
En
Journal:
Food Chem
Year:
2020
Document type:
Article
Affiliation country: