Fluorescent probe/hydrogel-based portable platform for ultrasensitive on-site detection of explosive particles containing nitrite

Zhang, Jiawei; Hu, Tianyu; Xiong, Baojiao; Zheng, Xufan; Wang, Ruize; Zhu, Panpan; Chen, Jin; Cong, Tingting; Li, Yuda; Wang, Xunchang

doi:10.1016/j.cej.2023.146311

Chemical Engineering Journal

2023

DOI: 10.1016/j.cej.2023.146311

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Fluorescent probe/hydrogel-based portable platform for ultrasensitive on-site detection of explosive particles containing nitrite

Jiawei Zhang,

Tianyu Hu,

Baojiao Xiong

et al.

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2024

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Cited by 6 publications

(1 citation statement)

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“…Although there are protocols to minimize the impact of color and turbidity issues, they are deemed cumbersome and unsuitable for onsite applications . On the other hand, with the awareness of citizen science, smartphone-based analytical instruments have attracted much attention. − Interestingly, there are few reports on building handhold acute toxicity detectors using smartphones, − not mentioning ones that could minimize the interference from the sample color.…”

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confidence: 99%

Smartphone-Assisted Three Dimensional-Printed Acute Toxicity Detection: Mitigating the Impact of Sample Color

Liu,

Wang,

Yang

et al. 2024

ACS EST Water

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Accurate and rapid detection of toxicity in water bodies is critical for environmental monitoring, especially during environmental emergencies. Currently, smartphone-based sensors capable of detecting toxicity in colored water samples. This paper introduces the smartphone-assisted three-dimensional (3D)-printed acute toxicity detector (sATD), a novel device designed to quickly measure the inhibition rate on luminescent bacteria, thereby providing an efficient and affordable means for on-site acute toxicity assessment. To ensure stable image acquisition, the entire device is enclosed in a 3D-printed, sealed black box. Three different brands of smartphones were examined for the best performance. The sATD-IR (smartphone-assisted 3D-printed acute toxicity detector - inhibition rate) offers a straightforward and precise method for on-site luminescence inhibition detection, facilitating monitoring of acute toxicity in regional water. The sATD-IR system was validated by using a variety of samples. For example, the half-maximal inhibitory concentration (IC50) value for the heavy metal Zn2+ using the sATD-IR system was 1.727 mg/L, which is very close to the IC50 value of 1.656 mg/L obtained using the standard method. More importantly, our investigation examined how color can affect sample toxicity detection. A correction algorithm based on RGB analysis to accurately determine the inhibition rate for colored samples was proposed and validated.

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mentioning

confidence: 99%

Smartphone-Assisted Three Dimensional-Printed Acute Toxicity Detection: Mitigating the Impact of Sample Color

Liu,

Wang,

Yang

et al. 2024

ACS EST Water

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Ultrasensitive and On‐Site Detection of Nitroaromatic Explosives Through a Dual‐Mode Hydrogel Sensor Utilizing Portable Devices

Zhang,

Xiong,

Gao

et al. 2024

Adv Funct Materials

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The development of straightforward and dependable explosive sensors for on‐site identification is essential to preserving public safety concerns and lowering the safety risks related to explosions. However, one of the main barriers to the advancement of on‐site explosives detection in the future is the complexity of detection process. Here, a flexible hydrogel‐based sensing platform based on 3,4‐bis (4‐(1,2,2‐triphenylvinyl) phenyl) thiophene (TPE‐Z) and a methyl red design concept is shown that simultaneously achieves all targeted properties, including being quick, portable, reliable, and resistant to external interference. This composite fluorescent probe demonstrates outstanding detection capabilities, including low detection limits (0.48 mg L−1) and rapid response times (<5 s), which can be combined with smartphones for on‐site 2,4,6‐trinitrophenol (picric acid, PA) detection. Two independent fluorescence and colorimetric channels on the sensor showed selective response to PA under fluorescence and visible light irradiation, respectively. Meanwhile, the hydrogel sensor's distinct “turn on” and “turn off” response modes to PA can be utilized to construct “YES” and “NO” logic gates, which subsequently proves that they can be employed to differentiate PA on‐site. This sensing platform based on hydrogel is envisaged to offer in‐depth insights in advancing the on‐site detection of nitroaromatic explosives.

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Magnetic Field Induced Dielectric Polarization to Enhance Raman Detection of Nitrite by NiFe₂O₄@Ag

Zhao,

Sun,

Gao

et al. 2024

Adv Funct Materials

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Rapid and accurate detection of nitrite in the aqueous environment is extremely important for ecological safety and human health. In this paper, the Raman detection of nitrite by a NiFe2O4@Ag sensor in water is enhanced by an extra magnetic field collaborated with surface plasma. Most importantly, it is demonstrated that the magnetic field enhances the Raman peak intensity through not only the effect of magnetic aggregation but also the magnetic field‐induced dielectric polarization effect. In this way, the NO2− can be detected in a wide linear range from 10−8 to 10−3 mol L−1, and the limit of detection (LOD) can reach as low as 1.25 × 10−9 mol L−1, which is 5.69 times lower than that in the absence of an external magnetic field. Similarly, the sensitivity under the magnetic field is 2.65 times that without the magnetic field. In addition, the sensor also shows superior detection ability to NO2− in real samples. Given the excellent capability of the magnetic field‐enhanced Raman spectra, the reported strategy offers new thoughts on how to enhance the detection ability by an external magnetic field and show the great application potential in real water bodies.

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Fluorescent probe/hydrogel-based portable platform for ultrasensitive on-site detection of explosive particles containing nitrite

Cited by 6 publications

References 50 publications

Smartphone-Assisted Three Dimensional-Printed Acute Toxicity Detection: Mitigating the Impact of Sample Color

Smartphone-Assisted Three Dimensional-Printed Acute Toxicity Detection: Mitigating the Impact of Sample Color

Ultrasensitive and On‐Site Detection of Nitroaromatic Explosives Through a Dual‐Mode Hydrogel Sensor Utilizing Portable Devices

Magnetic Field Induced Dielectric Polarization to Enhance Raman Detection of Nitrite by NiFe₂O₄@Ag

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Fluorescent probe/hydrogel-based portable platform for ultrasensitive on-site detection of explosive particles containing nitrite

Cited by 6 publications

References 50 publications

Smartphone-Assisted Three Dimensional-Printed Acute Toxicity Detection: Mitigating the Impact of Sample Color

Smartphone-Assisted Three Dimensional-Printed Acute Toxicity Detection: Mitigating the Impact of Sample Color

Ultrasensitive and On‐Site Detection of Nitroaromatic Explosives Through a Dual‐Mode Hydrogel Sensor Utilizing Portable Devices

Magnetic Field Induced Dielectric Polarization to Enhance Raman Detection of Nitrite by NiFe2O4@Ag

Contact Info

Product

Resources

About

Magnetic Field Induced Dielectric Polarization to Enhance Raman Detection of Nitrite by NiFe₂O₄@Ag