Integrating smartphone-assisted ratiometric fluorescent sensors with in situ hydrogel extraction for visual detection of organophosphorus pesticides
被引:8
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作者:
Tong, Xia
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Cent South Univ, Coll Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China
Jiangxi Univ Tradit Chinese Med, Key Lab Modern Preparat Tradit Chinese Med, Nanchang 330004, Jiangxi, Peoples R ChinaCent South Univ, Coll Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China
Tong, Xia
[1
,2
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Cai, Guihan
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Cent South Univ, Coll Chem & Chem Engn, Changsha 410083, Hunan, Peoples R ChinaCent South Univ, Coll Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China
Cai, Guihan
[1
]
Zhu, Yongfeng
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Cent South Univ, Coll Chem & Chem Engn, Changsha 410083, Hunan, Peoples R ChinaCent South Univ, Coll Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China
Zhu, Yongfeng
[1
]
Tong, Chaoying
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Cent South Univ, Coll Chem & Chem Engn, Changsha 410083, Hunan, Peoples R ChinaCent South Univ, Coll Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China
Tong, Chaoying
[1
]
Wang, Fang
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Jiangxi Univ Tradit Chinese Med, Key Lab Modern Preparat Tradit Chinese Med, Nanchang 330004, Jiangxi, Peoples R ChinaCent South Univ, Coll Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China
Wang, Fang
[2
]
Guo, Ying
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Cent South Univ, Xiangya Hosp, Dept Clin Pharmacol, Hunan Key Lab Pharmacogenet, Changsha 410078, Hunan, Peoples R ChinaCent South Univ, Coll Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China
Guo, Ying
[3
]
Shi, Shuyun
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机构:
Cent South Univ, Coll Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China
Jiangxi Univ Tradit Chinese Med, Key Lab Modern Preparat Tradit Chinese Med, Nanchang 330004, Jiangxi, Peoples R ChinaCent South Univ, Coll Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China
Shi, Shuyun
[1
,2
]
机构:
[1] Cent South Univ, Coll Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China
[2] Jiangxi Univ Tradit Chinese Med, Key Lab Modern Preparat Tradit Chinese Med, Nanchang 330004, Jiangxi, Peoples R China
[3] Cent South Univ, Xiangya Hosp, Dept Clin Pharmacol, Hunan Key Lab Pharmacogenet, Changsha 410078, Hunan, Peoples R China
Rapid, reliable and on-site detection of organophosphorus pesticides (OPs) on fruit or vegetable surfaces is necessary in real life. Here, a smartphone-assisted ratiometric fluorescent sensor integrated with in situ hydrogel extraction was developed for the visual detection of OPs. Carbon dots (CDs) with dual emission at 450 and 675 nm under 365 nm excitation were synthesized. OPs can inhibit acetylcholinesterase to suppress the production of thiocholine (binding with Ag+). Then, free Ag+ oxidizes o-phenylenediamine to 2,3-diaminophenazine (Abs. maximum at 420 nm, Em. maximum at 560 nm), which quenches CD emission at 450 nm to construct a ratiometric sensor for OPs. In particular, for real sample detection, OPs rapidly diffused into surface deposited sodium alginate (SA) solution and were then extracted by an in situ formed SA hydrogel network. After that, the released OPs were visually detected using a smartphone-assisted platform. The fluorescent images presented a distinct color variation from blue to orange with a wide linear range from 1.2 to 57.0 mu g L-1 and a low limit of detection at 0.50 mu g L-1 for parathion-methyl, a model sample of OPs. The facileness, high sensitivity and nondestructive technology for OP measurement provided new insight into food safety evaluation.
机构:
Liaoning Normal Univ, Sch Chem & Chem Engn, Dalian 116029, Peoples R ChinaLiaoning Normal Univ, Sch Chem & Chem Engn, Dalian 116029, Peoples R China
Zhang, Xu
Li, Zheng
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Liaoning Normal Univ, Sch Chem & Chem Engn, Dalian 116029, Peoples R ChinaLiaoning Normal Univ, Sch Chem & Chem Engn, Dalian 116029, Peoples R China
Li, Zheng
Zhang, Yana
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Liaoning Normal Univ, Sch Chem & Chem Engn, Dalian 116029, Peoples R ChinaLiaoning Normal Univ, Sch Chem & Chem Engn, Dalian 116029, Peoples R China
Zhang, Yana
Jiao, Chengqi
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机构:
Liaoning Normal Univ, Sch Chem & Chem Engn, Dalian 116029, Peoples R China
Dalian Univ Technol, State Key Lab Fine Chem, Dalian 116024, Peoples R ChinaLiaoning Normal Univ, Sch Chem & Chem Engn, Dalian 116029, Peoples R China
Jiao, Chengqi
Zheng, Hanwen
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Liaoning Normal Univ, Sch Chem & Chem Engn, Dalian 116029, Peoples R ChinaLiaoning Normal Univ, Sch Chem & Chem Engn, Dalian 116029, Peoples R China
Zheng, Hanwen
Zhu, Yanyu
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机构:
Liaoning Normal Univ, Sch Chem & Chem Engn, Dalian 116029, Peoples R ChinaLiaoning Normal Univ, Sch Chem & Chem Engn, Dalian 116029, Peoples R China
Zhu, Yanyu
Sun, Zhengang
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Liaoning Normal Univ, Sch Chem & Chem Engn, Dalian 116029, Peoples R ChinaLiaoning Normal Univ, Sch Chem & Chem Engn, Dalian 116029, Peoples R China
机构:
Chongqing Med Univ, Coll Pharm, Chongqing 400016, Peoples R ChinaChongqing Med Univ, Coll Pharm, Chongqing 400016, Peoples R China
He, Yuxin
Zou, Hecun
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机构:
Chongqing Med Univ, Coll Pharm, Chongqing 400016, Peoples R ChinaChongqing Med Univ, Coll Pharm, Chongqing 400016, Peoples R China
Zou, Hecun
Zhou, Song
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机构:
Chongqing Med Univ, Sch Basic Med Sci, Chongqing 400016, Peoples R China
Chongqing Key Lab Forens Med, Chongqing 400016, Peoples R ChinaChongqing Med Univ, Coll Pharm, Chongqing 400016, Peoples R China
Zhou, Song
Liu, Dongmei
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Chongqing Med Univ, Coll Pharm, Chongqing 400016, Peoples R ChinaChongqing Med Univ, Coll Pharm, Chongqing 400016, Peoples R China
Liu, Dongmei
Jiang, Xinhui
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Chongqing Med Univ, Coll Pharm, Chongqing 400016, Peoples R ChinaChongqing Med Univ, Coll Pharm, Chongqing 400016, Peoples R China
Jiang, Xinhui
Zhang, Zhengwei
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Chongqing Med Univ, Coll Pharm, Chongqing 400016, Peoples R ChinaChongqing Med Univ, Coll Pharm, Chongqing 400016, Peoples R China
Zhang, Zhengwei
Li, Siqiao
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机构:
Chongqing Med Univ, Sch Basic Med Sci, Chongqing 400016, Peoples R China
Chongqing Key Lab Forens Med, Chongqing 400016, Peoples R ChinaChongqing Med Univ, Coll Pharm, Chongqing 400016, Peoples R China