Determination of Phthalate Esters in Beverages and Water Samples by Solid Phase Extraction with Resin Based COFs as Filler

Water

Wei Zhang¹  Shaoyan Wang¹  Yunjie Ma¹  Yang Ruan¹  Hang Cui¹  Xin Gao¹  Li Zhang¹ 

[1] School of Chemical Engineering, Liaoning Provincial Key Laboratory of Fine Separation Technique, University of Science and Technology, Anshan 114051, Liaoning, China;

关键词: resin-based COFs;    phthalate esters;    solid phase extraction;    trace analysis;   

DOI  :  10.3390/w13233338

来源: DOAJ

【 摘 要 】

Resin based covalent organic framework material was used as filler for solid phase extraction (SPE), and the solid phase extraction effect was compared with that of traditional COF material (TpBD COFs). The enrichment capacity of four phthalate esters (dimethyl phthalate, diethyl phthalate, dibutyl phthalate, dioctyl phthalate) in beverage samples was investigated by SPE. Adsorption experiments showed that the kinetic adsorption behavior of COF materials for phthalate esters (PAEs) was more consistent with the quasi-second-order kinetic adsorption model, and the static adsorption behavior is more in line with the Freundlich isothermal adsorption model. Solid phase extraction experiments proved that the SPE column prepared with two COF materials as adsorbents had good adsorption effects, high recovery (water: 97.99–100.56% and beverage: 97.93–100.23%) and were reusable (50 cycles), which could meet the requirements for trace detection of phthalate ester. It was found that the solid phase extraction effect was better than the four types of commercial SPE columns. The new COF material reduced the cost of monomer use and provided the possibility for its industrial production. Meanwhile, it also provided a new feasible scheme for enriching trace phthalate esters in practical samples.

【 授权许可】

Unknown