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1.云南省烟草质量监督检测站,云南 昆明 650106
2.北京大学 材料科学与工程学院,北京 100871
3.爱奇迹(深圳)创新科技有限公司 研发工程部,广东 深圳 518126
4.昆明理工大学 生命科学与 技术学院,云南 昆明 650500
杨德志,博士,副教授,研究方向:分析化学,E-mail:dzyang9@kust.edu.cn
收稿日期:2024-06-02,
修回日期:2024-08-03,
录用日期:2024-09-09,
纸质出版日期:2025-03-15
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陈丹,王春琼,张轲,荣先芳,龙杰,李海燕,蔡洁云,陈志超,崔一凡,杨德志,杨亚玲.基于F68-Ce-Cu过氧化酶活性调控检测类烟产品中尼古丁[J].分析测试学报,2025,44(03):445-453.
CHEN Dan,WANG Chun-qiong,ZHANG Ke,RONG Xian-fang,LONG Jie,LI Hai-yan,CAI Jie-yun,CHEN Zhi-chao,CUI Yi-fan,YANG De-zhi,YANG Ya-ling.Detection of Nicotine in Cigarette-like Products Based on the Regulation of Peroxidase-like Activity of F68-Ce-Cu[J].Journal of Instrumental Analysis,2025,44(03):445-453.
陈丹,王春琼,张轲,荣先芳,龙杰,李海燕,蔡洁云,陈志超,崔一凡,杨德志,杨亚玲.基于F68-Ce-Cu过氧化酶活性调控检测类烟产品中尼古丁[J].分析测试学报,2025,44(03):445-453. DOI: 10.12452/j.fxcsxb.240602104.
CHEN Dan,WANG Chun-qiong,ZHANG Ke,RONG Xian-fang,LONG Jie,LI Hai-yan,CAI Jie-yun,CHEN Zhi-chao,CUI Yi-fan,YANG De-zhi,YANG Ya-ling.Detection of Nicotine in Cigarette-like Products Based on the Regulation of Peroxidase-like Activity of F68-Ce-Cu[J].Journal of Instrumental Analysis,2025,44(03):445-453. DOI: 10.12452/j.fxcsxb.240602104.
研究制备了具有过氧化物酶活性的铈、铜掺杂纳米酶(F68-Ce-Cu)用于“茶烟”、“花烟”等类烟产品中尼古丁的比色分析。在H
2
O
2
存在下,F68-Ce-Cu可以催化无色3,3',5,5'-四甲基联苯胺(TMB)转化为蓝色氧化型TMB(oxTMB)。研究发现尼古丁对F68-Ce-Cu过氧化物酶活性有显著增敏作用,且不会受到类烟产品中其它成分的干扰。米氏动力学研究结果发现,相较于单独Ce(
K
m
=2.04 mmol/L)或Cu(
K
m
=9.46 mmol/L)掺杂纳米酶,F68-Ce-Cu的米氏常数
K
m
显著降低(
K
m
=1.51 mmol/L),而在加入天然尼古丁之后,“F68-Ce-Cu+尼古丁”的
K
m
为0.25 mmol/L,与底物的亲和性增强了6倍。Zet
a电位测定结果表明,F68-Ce-Cu与尼古丁之间有较强的吸附作用,并能够促进产生更多的·OH和O
2
·-
,从而显著提高过氧化物酶活性。在0.017~0.52 mg/mL范围内,尼古丁质量浓度与654 nm处吸光度呈良好线性关系,检出限达到0.008 mg/mL。在实际类烟产品中,该方法的加标回收率为90.9%~103%,相对标准偏差为2.1%~4.6%,且与高效液相色谱法的检测结果几乎一致,表明该方法稳定性强、准确性高。
Cerium and copper doped nanozyme(F68-Ce-Cu) with peroxidase-like activity was prepared for the colorimetric analysis of nicotine in “tea tobacco” and “flower tobacco”. In the presence of H
2
O
2
,F68-Ce-Cu could catalyze the conversion of colorless 3,3',5,5'-tetramethylbenzidine(TMB) into blue oxidized TMB(oxTMB). It had been found that nicotine has a significant sensitizing effect on the peroxidase-like activity of F68-Ce-Cu without interference from other possible components in cigarette-like products. The results of the Michaelis-Menten kinetics study showed that compared to the Ce(
K
m
=2.04 mmol/L) or Cu(
K
m
=9.46 mmol/L) based-nanozyme alone,the
K
m
of F68-Ce-Cu was significantly reduced(
K
m
=1.51 mmol/L),and the
K
m
of “F68-Ce-Cu+nicotine” system was 0.25 mmol/L,which was 6 times more strongly bound to the substrate after the addition of natural nicotine. The results of Zeta potential determination showed that there was a strong adsorption between F68-Ce-Cu and nicotine,and it could promote the production of more ·OH and O
2
·-
,which significantly increased the peroxidase-like activity. In the range of 0.017-0.52 mg/mL,nicotine concentration showed a good linear relationship with absorbance at 654 nm,and the detection limit reached 0.008 mg/mL. In the actual cigarette-like products,the recovery of the method was in the range of 90.9%-103%,and the relative standard deviation was in the range of 2.1%-4.6%,which was almost consistent with the detection results of high performance liquid chromatography,indicating that the method was stable a
nd accurate.
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