当前位置: X-MOL 学术Microchim. Acta › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Magnetic 3D hierarchical Ni/NiO@C nanorods derived from metal-organic frameworks for extraction of benzoylurea insecticides prior to HPLC-UV analysis
Microchimica Acta ( IF 5.7 ) Pub Date : 2020-01-01 , DOI: 10.1007/s00604-019-4013-5
Huixiao Duo 1, 2 , Yijing Li 1 , Xiaojing Liang 1 , Shuai Wang 1 , Licheng Wang 1 , Yong Guo 1
Affiliation  

Magnetic hierarchical nickel/nickel oxide/carbon nanorods (Ni/NiO@C) were prepared via the pyrolysis of a metal-organic framework containing nickel(II) nickel (Ni-MOF; Ni 3 (BTC) 2 ) under argon atmosphere. In this material, magnetic Ni/NiO@C nanoparticles are embedded in porous carbon nanorods, and the morphology is similar to that of the original Ni-MOF precursor. The synthesized nanorods were applied as magnetic sorbents in the solid-phase extraction of five benzoylurea insecticides (flufenoxuron, chlorbenzuron, teflubenzuron, diflubenzuron and triflumuron), and their performance was evaluated under optimized conditions. The results show that the material exhibits high extraction recoveries from spiked samples (82.9%–107.6%) and linear response in the range of 0.2–450 μg·L −1 . It is also characterized by relatively low limits of detection (50–100 ng·mL −1 ) at a signal-to-noise ratio of 3. The sorbent is chemically stable and can be repeatedly recycled, with little decline in extraction capacity after 20 cycles of reuse. The method was successfully applied to the quantification of benzoylureas in tea, wolfberry, millet, and oat samples, and it showed high extraction efficiency. Graphical abstract Schematic representation of the synthesis of magnetic hierarchical nickel/nickel oxide/carbon nanorods derived from Ni-MOF. The material is employed as a sorbent for the magnetic solid-phase extraction of benzoylurea insecticides.

中文翻译:

来自金属有机骨架的磁性 3D 分层 Ni/NiO@C 纳米棒,用于在 HPLC-UV 分析前提取苯甲酰脲类杀虫剂

通过在氩气氛下热解含有镍(II)镍(Ni-MOF;Ni 3 (BTC) 2 )的金属-有机骨架,制备磁性分级镍/氧化镍/碳纳米棒(Ni/NiO@C)。在该材料中,磁性 Ni/NiO@C 纳米颗粒嵌入多孔碳纳米棒中,其形貌与原始 Ni-MOF 前驱体相似。将合成的纳米棒作为磁性吸附剂应用于五种苯甲酰脲类杀虫剂(氟虫脲、氯苯脲、七氟苯脲、除虫脲和氟虫脲)的固相萃取,并在优化条件下对其性能进行了评估。结果表明,该材料从加标样品中表现出高提取回收率(82.9%–107.6%),线性响应范围为 0.2–450 μg·L -1 。它还具有相对较低的检测限 (50–100 ng·mL -1 ),信噪比为 3。吸附剂化学性质稳定,可重复循环使用,20 年后萃取能力几乎没有下降重复使用的循环。该方法已成功应用于茶叶、枸杞、小米、燕麦样品中苯甲酰脲的定量分析,提取效率高。图形摘要 从 Ni-MOF 衍生的磁性分层镍/氧化镍/碳纳米棒的合成示意图。该材料用作苯甲酰脲类杀虫剂的磁性固相萃取吸附剂。该方法已成功应用于茶叶、枸杞、小米、燕麦样品中苯甲酰脲的定量分析,提取效率高。图形摘要 从 Ni-MOF 衍生的磁性分层镍/氧化镍/碳纳米棒的合成示意图。该材料用作苯甲酰脲类杀虫剂的磁性固相萃取吸附剂。该方法已成功应用于茶叶、枸杞、小米、燕麦样品中苯甲酰脲的定量分析,提取效率高。图形摘要 从 Ni-MOF 衍生的磁性分层镍/氧化镍/碳纳米棒的合成示意图。该材料用作苯甲酰脲类杀虫剂的磁性固相萃取吸附剂。
更新日期:2020-01-01
down
wechat
bug