TY - JOUR
T1 - The investigation of triadic silica-supported polyhexamethylene guanidine@nano-hydroxyapatite nanocomposites for Cr (VI) detection
AU - Zhan, Meihong
AU - Gao, Weimin
AU - Nguyen, William
AU - Yu, Hongmei
AU - Amador, Eric
AU - Chen, Wei
N1 - Publisher Copyright:
© 2022 The Authors
PY - 2022/8
Y1 - 2022/8
N2 - Triadic silica-supported polyhexamethylene guanidine@nano-hydroxyapatite (HAP) composites were prepared and employed in a micro-column system for solid phase extraction of Cr (VI) with its determination by flame atomic absorption spectrometry (FAAS). It is found that the triadic silica-supported nano-HAP composites can efficiently adsorb Cr (VI) at pH 4.0–6.0, but absorb almost no Cr (III). The detection has a good linear range of 0.3–300 μg L−1, a detection limit of 0.09 μg L−1 (3σ, n = 11) and a precision of 1.3% (20 μg L−1, n = 11) on Cr (VI). The adsorption mechanisms are mainly electrostatic attraction and the channel effect. This method was successfully applied to the determination of chromium contents in cereal and water samples with recoveries of 99.5–109.8%.
AB - Triadic silica-supported polyhexamethylene guanidine@nano-hydroxyapatite (HAP) composites were prepared and employed in a micro-column system for solid phase extraction of Cr (VI) with its determination by flame atomic absorption spectrometry (FAAS). It is found that the triadic silica-supported nano-HAP composites can efficiently adsorb Cr (VI) at pH 4.0–6.0, but absorb almost no Cr (III). The detection has a good linear range of 0.3–300 μg L−1, a detection limit of 0.09 μg L−1 (3σ, n = 11) and a precision of 1.3% (20 μg L−1, n = 11) on Cr (VI). The adsorption mechanisms are mainly electrostatic attraction and the channel effect. This method was successfully applied to the determination of chromium contents in cereal and water samples with recoveries of 99.5–109.8%.
KW - Cr (VI)
KW - Flame atomic absorption spectrometry
KW - Nano-hydroxyapatite composites
KW - Preconcentration
KW - Solid phase extraction
UR - http://www.scopus.com/inward/record.url?scp=85132532385&partnerID=8YFLogxK
U2 - 10.1016/j.mtadv.2022.100268
DO - 10.1016/j.mtadv.2022.100268
M3 - Article
AN - SCOPUS:85132532385
SN - 2590-0498
VL - 15
JO - Materials Today Advances
JF - Materials Today Advances
M1 - 100268
ER -