Selective colorimetric sensors based on the monitoring of an unmodified silver nanoparticles (AgNPs) reduction for a simple and rapid determination of mercury

Jarujamrus, Purim; Amatatongchai, Maliwan; Thima, Araya; Khongrangdee, Thatsanee; Mongkontong, Chakrit

doi:10.1016/j.saa.2015.01.084

Cited by 75 publications

(32 citation statements)

References 26 publications

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“…Lee et al [4] concluded that labelfree silver nanoparticles can be used in the detection of zinc ions. Finally, He and Zhang [8] and Jarujamrus et al [9] also reported of the capability of unmodified silver nanoparticles as sensors for manganese and mercury, respectively. However, some studies use potentially toxic reagents and numerous instruments in reducing, stabilizing and functionalizing the silver nanoparticles.…”

Section: Introductionmentioning

confidence: 96%

Simple and rapid colorimetric sensing of Ni(II) ions in tap water based on aggregation of citrate-stabilized silver nanoparticles

Almaquer

Ricacho

Ronquillo

2019

Sustain Environ Res

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The presence of nickel in our water sources presents a danger to human health and aquatic organisms alike. Therefore, there is a need to detect and monitor nickel concentration in these sources. Current detection methods use instruments that are costly, resource intensive and require skilled personnel. Alternative methods that are simple and fast are needed. This study reports for the first time the development of a simple colorimetric assay for the detection of Ni 2+ in aqueous solution using citrate-stabilized silver nanoparticles. Chemical synthesis method was employed using sodium borohydride and trisodium citrate as reducing and stabilizing agents, respectively. The characterization techniques used for obtaining spectral and morphological properties were ultraviolet-visible spectroscopy and transmission electron microscopy. The resultant silver nanoparticle solution was yellow in color and exhibited an absorbance peak at 392 nm. The full width at half maximum value was 57.8 ± 1.3 nm indicating particle monodispersity. For the morphology, the nanoparticles were spherical in shape with an average size of 10.4 ± 4.5 nm. Furthermore, the colorimetric properties of the silver nanoparticles for Ni 2+ detection was investigated. Ni 2+ was visually detected through a fast solution color change from yellow to orange. Monitoring of the absorbance showed a decrease in the original 392 nm peak and broadening of the surface plasmon absorption band. These changes are attributed to the aggregation of the nanoparticles due to Ni 2+ addition which was confirmed by the transmission electron microscopy imaging. The absorption ratio (A 510 /A 392) was plotted against varying Ni 2+ concentration and it exhibited a good linear correlation from 0.7 to 1.6 mM with an R 2 of 0.9958. The limits of detection and quantification were 0.75 and 1.52 mM, respectively. Additionally, the assay was tested against other common ions and showed excellent selectivity for Ni 2+. Finally, the assay was successfully tested to detect Ni 2+ in tap water samples with an average difference of 16% from prepared concentrations. Overall, the study showed the potential of using citrate-stabilized silver nanoparticles as a colorimetric reagent for detecting Ni 2+ in aqueous solution.

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Section: Introductionmentioning

confidence: 96%

Simple and rapid colorimetric sensing of Ni(II) ions in tap water based on aggregation of citrate-stabilized silver nanoparticles

Almaquer

Ricacho

Ronquillo

2019

Sustain Environ Res

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“…The drop in LSPR absorbance of AgNPs was also observed in the Fe 3+ in the presence of the capping agent N-acetyl-L-cysteine [13]. A large change in absorbance was also observed when Hg 2+ ions were added to the colloidal AgNPs prepared with a solution of trisodium citrate, in which the citrate acted as complexing agent [25].…”

Section: Resultsmentioning

confidence: 85%

“…Chemosensors 2019, 7, x; www.mdpi.com/journal/chemosensors change in absorbance was also observed when Hg 2+ ions were added to the colloidal AgNPs prepared with a solution of trisodium citrate, in which the citrate acted as complexing agent [25]. The addition of different cations with a concentration of 250 µg/L causes a slight change in the LSPR spectra of the colloidal AgNPs.…”

Section: Resultsmentioning

confidence: 91%

Colorimetric Sensing of Pb2+ Ion by Using Ag Nanoparticles in the Presence of Dithizone

et al. 2019

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Colorimetric analysis of heavy metal ions can be realized by the aid of Ag nanoparticles to improve the analytical characteristics. The method is based on the localized surface plasmon resonance (LSPR) properties of the Ag nanoparticles (AgNPs). In this work, we applied the AgNPs with the addition of dithizone to further improve the selectivity and sensitivity of Pb2+ analysis. Colorimetric sensing of Pb2+ ions based on the polyvinyl alcohol (PVA)-stabilized-colloidal AgNPs in the presence of dithizone is reported. A linear decrease in the AgNPs LSPR absorbance at 421 nm was observed along with the increase in the Pb2+ concentration in the range of 0.50–10 µg/L. The other ions give a minor change in the LSPR absorbance of colloidal AgNPs. The Pb2+ limit of detection, the limit of quantification, and sensitivity were found to be 0.64 ± 0.04 µg/L, 2.1 ± 0.15 µg/L, 0.0282 ± 0.0040 L/µg (n = 5), respectively. The obtained sensitivity is comparable with that of the immunosensing method. The proposed method could offer a good alternative for colorimetric analysis of Pb2+ ions by using nanoparticles in the presence of ligands, which can improve selectivity.

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“…СПИСОК ЛИТЕРАТУРЫ Таблица 1. Сравнение предложенного способа со способами определения ртути(II) с помощью других нанореагентов Нанореагент с min, мкг/мл Литература Сферические НЧ серебра, стабилизированные L-цистеином 3.2 [42] Сферические НЧ серебра, стабилизированные экстрактом растения Soap-root 0.44 [43] Нанокомпозит на основе бумаги и сферических НЧ серебра 0.12 [44] Сферические НЧ серебра, стабилизированные цитратом натрия 0.06 [45] Сферические НЧ золота, покрытые серебром 0.06 [46] ТНП серебра 0.02 [40] Нанокомпозит на основе ППУ и ТНП серебра 0.05 (V = 5 мл) 0.005 (V = 100 мл)…”

Section: экспериментальная частьunclassified

Новый Нанокомпозитный Материал На Основе Пенополиуретана И Треугольных Нанопластинок Серебра В Качестве Твердофазного Аналитического Реагента Для Определения Ртути(II)

Furletov¹,

Апяри²,

Гаршев³

et al. 2019

Rossijskie nanotehnologii

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Разработан способ определения ртути(II) с использованием пенополиуретана, модифицированного на поверхности треугольными нанопластинками серебра со средней длиной ребра 52 нм и толщиной 4 нм. Способ основан на окислении нанопластинок серебра ртутью(II). Оно сопровождается уменьшением полосы поверхностного плазмонного резонанса наночастиц, что позволяет рассматривать полученный нанокомпозитный материал в качестве твердофазного аналитического реагента для определения ртути(II). Исследовано влияние времени взаимодействия и pH раствора на чувствительность определения ртути. Предел обнаружения ртути в выбранных условиях равен 50 мкг/л, диапазон определяемых содержаний составляет 150–1000 мкг/л. Увеличение объема анализируемого раствора с 5.0 до 100.0 мл за счет концентрирования позволяет снизить предел обнаружения ртути до 5 мкг/л.

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Selective colorimetric sensors based on the monitoring of an unmodified silver nanoparticles (AgNPs) reduction for a simple and rapid determination of mercury

Cited by 75 publications

References 26 publications

Simple and rapid colorimetric sensing of Ni(II) ions in tap water based on aggregation of citrate-stabilized silver nanoparticles

Simple and rapid colorimetric sensing of Ni(II) ions in tap water based on aggregation of citrate-stabilized silver nanoparticles

Colorimetric Sensing of Pb2+ Ion by Using Ag Nanoparticles in the Presence of Dithizone

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