Cited by 93Analytical chemistry methods developmentAdsorption and biosorption for pollutant removalHeavy metals in environment

Chitosan/thiol functionalized metal–organic framework composite for the simultaneous determination of lead and cadmium ions in food samples

Huang, Lijin, Huang, Wan, Shen, Rujia, Shuai, Qin·2020·Food Chemistry

Abstract

In this work, a facile solid phase extraction (SPE) method was developed for the analysis of trace Pb 2+ and Cd 2+ by using chitosan/thiol modified metal-organic frameworks (CS/MOF-SH) composite as adsorbent followed by graphite furnace atomic absorption spectrometer (GF-AAS) detection. The potential influencing factors, such as solution pH, adsorbent dosage, and extraction time, were fully estimated. Under the optimized extraction conditions, the detection limits of Pb 2+ and Cd 2+ were 0.033 µg L-1 and 0.008 µg L-1, respectively. Compared to other studies, CS/MOF-SH not only possessed superior adsorption performance, but also had the advantages of ease of handling and recyclability. Encouragingly, the developed method was of high accuracy and could monitor trace Pb 2+ and Cd 2+ in various certified reference materials (rice, wheat and tea) with complicated matrices, demonstrating its practical potential for regular monitoring of trace heavy metal ions in real food samples.

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Crossref · 10.1016/j.foodchem.2020.127212

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Authors
Huang, L., Huang, W., Shen, R., & Shuai, Q.
Affiliations
China University of Geosciences (CN)
Corresponding author
Huang, Lijin
Venue
Food Chemistry
Publisher
Elsevier BV
Published
2020-11
Volume
330
Pages
127212
ISSN
0308-8146 (ISSN-L)
OpenAlex
W3032982171
Cited by
92
References
33
Citations by year
2026: 9 · 2025: 10 · 2024: 14 · 2023: 16 · 2022: 21 · 2021: 20 · 2020: 2
FWCI
7.64
Type
journal article
Language
en
Open access
closed
Locations
  • Food Chemistry (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Fundamental Research Funds for the Central Universities
  • National Natural Science Foundation of China
Topics
  • Physical Sciences › Chemistry › Analytical Chemistry › Analytical chemistry methods development
  • Physical Sciences › Environmental Science › Water Science and Technology › Adsorption and biosorption for pollutant removal
  • Physical Sciences › Environmental Science › Pollution › Heavy metals in environment
Keywords
chitosan, thiol functionalization, metal-organic frameworks, solid-phase extraction, lead determination, cadmium determination, heavy metal adsorption, food contamination, rice, wheat, tea, adsorbent reusability
MeSH terms
Metal-Organic Frameworks, Cadmium, Cations, Divalent, Food Analysis, Lead, Oryza, Sulfhydryl Compounds, Tea, Triticum, Chitosan, Solid Phase Extraction

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