In-Situ Controlled Growth of NiCr Layered Double Hydroxide Nanosheets on Nichrome Alloy Fibers for Solid Phase Microextraction of Chlorophenols
10.19756/j.issn.0253-3820.241449
- VernacularTitle:镍铬合金纤维上原位可控生长镍铬层状双氢氧化物纳米片及其对氯酚的固相微萃取
- Author:
Hai-Xia LIU
1
;
Hong-Hong RAO
;
Fang LIU
;
Yan-Ping ZHENG
;
Yong-Qiang JIANG
Author Information
1. 兰州城市学院化学工程学院,兰州 730070;城市环境污染控制甘肃省高校省级重点实验室,兰州 730070
- Keywords:
Nichrome fiber;
NiCr layered double hydroxides;
In-situ growth;
Solid phase microextraction;
Chlorophenols
- From:
Chinese Journal of Analytical Chemistry
2025;53(3):481-491,后插1-后插4,封3
- CountryChina
- Language:Chinese
-
Abstract:
Nichrome(NiCr)wire with strong mechanical properties,excellent flexibility,good corrosion resistance and high thermal stability was selected as a promising fiber substrate to replace the fragile fused-silica counterpart.The NiCr layered double hydroxide nanosheets(NiCr LDHs NSs)were in-situ grown on the NiCr fiber substrate.Then,the extraction performance of the NiCr@NiCr LDHs NSs fiber was evaluated using four kinds of chlorophenol(CPs)as model compounds combined with high performance liquid chromatography-ultraviolet detection(HPLC-UV).The results showed that the assembled fibers exhibited superior extraction selectivity and enhanced extraction efficiency for CPs in comparison to commercial PA,PDMS,and PDMS/DVB fibers.Under the optimized experimental conditions,the established method showed good linearity in the range of 0.2-200 μg/L,with coefficient of determination(R2)>0.9989.The limits of detection(LODs)and limits of quantification(LOQs)were 0.050-0.157 μg/L and 0.165-0.502 μg/L,respectively.Relative standard deviations(RSDs)for intra-day and inter-day analyses ranged from 2.85%to 4.05%and from 3.16%to 4.96%,respectively.The developed method with the constructed fiber was applied to preconcentration and detection of different types of CPs in real water samples,showing satisfactory recoveries ranging from 80.0%to 106.9%,with RSDs of 3.12%-7.81%.Moreover,the NiCr@NiCr LDHs NSs fiber could maintain good extraction performance even after 240 extraction-desorption cycles.
