Chinese Journal of Chromatography ›› 2020, Vol. 38 ›› Issue (1): 143-148.DOI: 10.3724/SP.J.1123.2019.06022

Previous Articles    

Solid phase extraction and high performance liquid chromatography with tetraaza[2]arene[2]triazine-bonded silica gel adsorbent for determination of nitrophenols and diethylstilbestrol in river water

PENG Zifang1, LI Qin2,3, ZHANG Guangrui1, ZHAO Wuduo1, LIAN Hongzhen3, ZHANG Shusheng1,*()   

  1. 1 College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
    2 Food and Drug Inspection Institute of Zhengzhou, Zhengzhou 450008, China
    3 College of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
  • Received:2019-06-25 Online:2020-01-08 Published:2020-12-11
  • Contact: ZHANG Shusheng
  • Supported by:
    National Natural Science Foundation of China(21775140)

Abstract:

A novel method based on solid phase extraction (SPE)-high performance liquid chromatography (HPLC) was developed for the simultaneous determination of nitrophenols and diethylstilbestrol in river water. Tetraaza[2]arene[2]triazine-bonded silica gel, a homemade SPE adsorbent, was used to enrich the nitrophenols and diethylstilbestrol, and the optimal SPE and HPLC conditions were established. The sample solution was adjusted to pH 5, purified with a lab-made solid phase extraction column, and then eluted with 2 mL ammonia-methanol (2:98, v/v). The enriched sample was separated on a C8 column with methanol and 0.1% phosphoric acid solution as mobile phases in a gradient elution. Under the optimized conditions, the limits of detection (LOD, S/N=3) for the four target analytes were 0.03-0.3 μg/L, and the limits of quantification (LOQ, S/N=10) were 0.1-1.0 μg/L. The recoveries were 75.5%-104.2%, and the relative standard deviations (RSD, n=5) were less than 6.3%. The proposed method is accurate and reliable, and it has been successfully used for determining nitrophenols and diethylstilbestrol in river water.

Key words: tetraaza[2]arene[2]triazine, solid phase extraction(SPE), high performance liquid chromatography (HPLC), nitrophenol, diethylstilbestrol, river water