Simultaneous Extraction of Atrazine and Its Toxic Metabolites Based on Functionalized Polyacrylonitrile Nanofiber Mat
10.11895/j.issn.0253-3820.160831
- VernacularTitle:功能化聚丙烯腈纳米纤维膜同时高效萃取莠去津及其毒性代谢物
- Author:
Weixin CAO
;
Biyi YANG
;
Feifei QI
;
Liangliang QIAN
;
Qian XU
- Keywords:
Atrazine;
Nanofibers mat;
Functionalized modification;
Solid-phase extraction;
Adsorbent
- From:
Chinese Journal of Analytical Chemistry
2017;45(4):495-501
- CountryChina
- Language:Chinese
-
Abstract:
A novel solid-phase extraction (SPE) adsorbent for simultaneous extraction of atrazine (ATZ) and its metabolites, deisopropylatrazine (DIA) and deethylatrazine (DEA) from environmental water samples was prepared. Polyacrylonitrile nanofibers (PAN NFs) mat was prepared via electrospinning, and was further functionalized to obtain polypyrrole modified polyacrylonitrile nanofibers (PPy-PAN NFs) mat, hydrazine modified polyacrylonitrile nanofibers (NH2-PAN NFs) mat and carboxyl modified polyacrylonitrile (COOH-PAN NFs) mat. The results showed that the adsorption capacity of COOH-PAN NFs mat was better than other three NFs mats in both static (2.0 mg/g) and dynamic (0.19 mg/g) experiments. Meanwhile, the runoff ratios of COOH-PAN NFs mat were the lowest (less than 30.0％) in the adsorption of three analytes, especially for high polar analytes, which showed that the hydrogen bond between carboxyl groups and analytes was the main interactive force. A combination of mat-based SPE and high performance liquid chromatography-diode array detection was further established for determination of 3 analytes in environmental water samples. The recoveries were 81.4％-120.3％ and the limits of detection were 0.12 ng/mL for DIA, 0.09 ng/mL for DEA and ATZ, respectively.
