Combination of zeolitic imidazolate framework-67 and magnetic porous porphyrin organic polymer for preconcentration of neonicotinoid insecticides in river water

Shirley Kholofelo Selahle, Anele Mpupa, Philiswa Nosizo Nomngongo

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)

Abstract

A nanostructured material composed of zeolitic imidazolate framework-67 and magnetic porous porphyrin organic polymer (ZIF-67@MPPOP) was successfully synthesized and applied for the enrichment of neonicotinoid insecticides in river water. The analytes were detected and quantified using high performance liquid chromatography coupled with diode array detector (HPLC-DAD) and liquid chromatography mass spectrometry (LC-MS). Influential experimental parameters were optimized using response surface methodology based on Box Behnken design. The adsorption capacities were 69.46, 80.53, 85.39 and 90.0 mg g−1 for thiamethoxam, imidacloprid, acetamiprid and clothianidin, respectively. At optimal experimental conditions, low limit of detection (LOD), limit of quantification (LOQ) and linearity were 0.0091–0.04 µg L−1, 0.04–0.13 µg L−1 and (0.04-600 µg L−1), respectively. The relative standard deviation used to evaluate the reproducibility and repeatability of the method was less than 5%. Finally, the method was employed for determination of four neonicotinoid insecticides in river water.

Original languageEnglish
Article number462685
JournalJournal of Chromatography A
Volume1661
DOIs
Publication statusPublished - 4 Jan 2022

Keywords

  • High performance liquid chromatography
  • Neonicotinoid insecticides
  • Porous organic polymer
  • Response surface methodology
  • Sample preparation
  • ZIF-67@MPPOP

ASJC Scopus subject areas

  • Analytical Chemistry
  • Biochemistry
  • Organic Chemistry

Fingerprint

Dive into the research topics of 'Combination of zeolitic imidazolate framework-67 and magnetic porous porphyrin organic polymer for preconcentration of neonicotinoid insecticides in river water'. Together they form a unique fingerprint.

Cite this