分析测试学报2025，Vol.44Issue(12)：2470-2477,8.DOI:10.12452/j.fxcsxb.25070601
镍铬基体上ZIF-8复合涂层的构筑及其对环境水体中多环芳烃的微萃取性能研究
Construction of ZIF-8 Composite Coating on Nichrome Alloy Substrate and Its Microextraction Performance for Polycyclic Aromatic Hydrocarbons in Environmental Water
摘要
Abstract
Nichrome(NiCr)wire with strong mechanical properties,excellent flexibility,good cor-rosion 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,ZIF-8 was successfully loaded onto NiCr LDHs NSs by in situ growth due to the abundant active sites on the surface of NiCr LDHs NSs.Subsequently the extraction performance of the NiCr@NiCr LDHs NSs@ZIF-8 fiber was evaluated combined with HPLC method by using typical aromatic compounds PAHs,as model analytes.A series of experimen-tal parameters including pH,ion strength,extraction temperature,stirring rate,extraction time and desorption time were optimized.Under the optimized conditions,the proposed method presented good determination coefficients(r2≥0.993 7),wide linear ranges(0.05-200 μg·L-1),low LODs(0.004-0.117 μg·L-1)and LOQs(0.013-0.386 μg·L-1).In addition,RSDs of the proposed meth-od with a single fiber for intra-day and inter-day analyses were 3.7%-4.6%and 3.8%-5.7%,respec-tively.RSDs of the proposed method with different fibers constructed in different batches were 5.1%-6.7%.In the case of real samples analyses,the spiked recoveries were 82.0%-112%with RS-Ds of 4.0%-7.0%(n=3).The results show that this method can be successfully applied to the accu-rate and highly sensitive detection of PAHs in actual environmental water samples.关键词
镍铬合金纤维/NiCr层状双氢氧化物/ZIF-8/固相微萃取/高效液相色谱/多环芳烃Key words
nichrome fiber/NiCr layered double hydroxide/ZIF-8/solid phase microextraction/HPLC/polycyclic aromatic hydrocarbons分类
化学化工引用本文复制引用
霍彩霞,刘海霞,刘芳,梁敏娟,张林河..镍铬基体上ZIF-8复合涂层的构筑及其对环境水体中多环芳烃的微萃取性能研究[J].分析测试学报,2025,44(12):2470-2477,8.基金项目
甘肃省高等学校科研项目(2025A-163) （2025A-163）
兰州城市学院博士启动基金项目(LZCU-BS2024-07) （LZCU-BS2024-07）
