1.东北林业大学 化学化工与资源利用学院,森林植物生态学重点实验室,黑龙江 哈尔滨 150040
2.哈尔滨工程大学 材料科学与化学工程学院,超轻材料与表面技术教育部重点实验室,黑龙江 哈尔滨 150001
CHEN Li-gang,Ph D,Professor,Research interests:sensors and nanomaterials,E-mail:analchem@nefu.edu.cn
ZHANG Sheng-huan,Ph D,Senior engineer,Research interests:analysis and detection,E-mail:zhangshenghuan15@hrbeu.edu.cn
收稿:2025-03-11,
修回:2025-04-26,
录用:2025-05-14,
网络出版:2025-10-27,
纸质出版:2025-12-15
移动端阅览
陈玉雪,王雪纯,孙麒竣,薛颖,曹爽,陈立钢,牛娜,张圣欢.合理构建木质素基FeN/C纳米酶用于毒死蜱比色检测[J].分析测试学报,2025,44(12):2535-2545.
CHEN Yu-xue,WANG Xue-chun,SUN Qi-jun,XUE Ying,CAO Shuang,CHEN Li-gang,NIU Na,ZHANG Sheng-huan.Rational Construction of Lignin-based FeN/C Nanozyme for Colorimetric Detection of Chlorpyrifos[J].Journal of Instrumental Analysis,2025,44(12):2535-2545.
陈玉雪,王雪纯,孙麒竣,薛颖,曹爽,陈立钢,牛娜,张圣欢.合理构建木质素基FeN/C纳米酶用于毒死蜱比色检测[J].分析测试学报,2025,44(12):2535-2545. DOI: 10.12452/j.fxcsxb.250311179.
CHEN Yu-xue,WANG Xue-chun,SUN Qi-jun,XUE Ying,CAO Shuang,CHEN Li-gang,NIU Na,ZHANG Sheng-huan.Rational Construction of Lignin-based FeN/C Nanozyme for Colorimetric Detection of Chlorpyrifos[J].Journal of Instrumental Analysis,2025,44(12):2535-2545. DOI: 10.12452/j.fxcsxb.250311179.
具有模拟酶活性的纳米材料是毒死蜱比色检测的潜在候选者。该文采用一锅法合成了具有过氧化物酶样活性的木质素基FeN/C纳米酶(FeN/CNs)。在材料内部,氮主要以吡咯氮的形式存在,与铁配位形成Fe-N配位结构,可作为活性位点。该传感器中掺入乙酰胆碱酯酶(AChE),可将氧化的3,3',5',5'-四甲基联苯胺(TMB)还原,使蓝色溶液恢复为无色溶液,而毒死蜱的存在会抑制AChE的活性,使溶液再次变成蓝色,基于此建立了针对毒死蜱的灵敏比色检测方法。该方法对毒死蜱的检测线性范围为0.90~80.00 μg·g
-1
,检出限为0.13 μg·g
-1
。在实际样品中,传感器对土壤样品中毒死蜱的回收率为94.4%~109%,相对标准偏差(RSD)为3.6%~4.2%。因此,所构建的传感器在检测真实土壤样本中的毒死蜱方面具有巨大潜力。
Nanomaterials exhibiting mimetic enzyme activity are promising candidates for colorimetric detection of chlorpyrifos. Herein,lignin-based FeN/C nanozymes(FeN/CNs) with peroxidase-like activity were synthesized by a one-pot method. Within the material,the nitrogen mainly exists as pyrrolyl nitrogen,which coordinates with iron to form an Fe-N structure that serves as the active site. The sensor incorporates acetylcholinesterase(AChE) to facilitate the restoration of oxidized 3,3',5',5'-tetramethylbenzidine(TMB),thereby restoring the blue solution to a colorless state. Furthermore,the presence of chlorpyrifos was found to inhibit AChE activity,causing the solution to turn blue again. A sensitive colorimetric method for chlorpyrifos has been established. The linear range of this method for the detection of chlorpyrifos was 0.90-80.00 μg·g
-1
and the limit of detection(LOD) was 0.13 μg·g
-1
. When applied to real samples,the method achieved recoveries of 94.4%-109% for chlorpyrifos in soil,and relative standard deviations(RSD) of the assay were 3.6%-4.2%. Therefore,the
constructed sensor holds significant potential for the reliable detection of chlorpyrifos.
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