SPECTROPHOTOMETRY | Inorganic Compounds

Zezzi-Arruda, Marco-Aurelio; Poppi, R J

doi:10.1016/b0-12-369397-7/00720-2

Cited by 7 publications

(5 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Although fluorescent probes for the determination of Al(III) stand out among these methods due to their selectivity and sensitivity, the disadvantages of this method are that they have time-consuming complicated probe design and synthesis processes, are toxic, have low solubility in water, have low photostability and excess reagent consumption (11,12). Spectrophotometry is one of the versatile and good alternative analytical techniques to determine the concentration of many analytes, especially in water samples, and has many advantages such as low cost, easy applicability, fast analysis, reliability, high sensitivity at low concentrations, and wide analytical working range (13).…”

Section: Introductionmentioning

confidence: 99%

Spectrophotometric and Smartphone-based Dual Monitoring Method for the Determination of Al(III) Ions Using Fermented Black Carrot Juice (Şalgam/Shalgam) as a Green Chromogenic Agent

Yardımcı

2023

Journal of the Turkish Chemical Society Section A: Chemistry

View full text Add to dashboard Cite

In this study, anthocyanin-rich fermented black carrot juice (şalgam/shalgam) was used as a chromogenic agent in order to develop eco-friendly, low-cost, simple, fast, and practical both visible spectrophotometric and smartphone-based methods for the determination of Al(III) ions in water samples. Formation of Al(III)-anthocyanin complex results in a color change from red to purple in direct proportion to the increasing Al(III) concentration. For the spectrophotometric analysis, the analytical response of the developed method between absorbance and logarithm of Al(III) concentration exhibits a satisfying wide linear concentration range from 37.0 to 1850.0 µM. The LOD and LOQ values are 6.67 µM and 22.0 µM, respectively. For smartphone-based analysis, the analytical response of the developed method between B values and Al(III) concentration obtained a linear concentration range from 18.5 to 111.0 µM. The LOD and LOQ values are 4.40 µM and 14.5 µM, respectively. LOD values are below the acceptable limit of Al(III) in water according to WHO (7.41 µM) for both methods. The interfering effect of common water ions was investigated, and the observed interferences from Sn2+, Fe2+, and Fe3+ were easily eliminated using enough concentration of Na2EDTA without affecting the blank absorbance/B value of the Al(III)−anthocyanin complex for two monitoring methods. The selectivity of the developed method was investigated in the presence of possible species such as benzoic acid, lactic acid, amino acids, and salt. Developed spectrophotometric and smartphone-based methods applied to real water samples and validated against the reference ICP-OES method at 95% confidence level using Student’s t- and F-tests.

show abstract

Section: Introductionmentioning

confidence: 99%

Spectrophotometric and Smartphone-based Dual Monitoring Method for the Determination of Al(III) Ions Using Fermented Black Carrot Juice (Şalgam/Shalgam) as a Green Chromogenic Agent

Yardımcı

2023

Journal of the Turkish Chemical Society Section A: Chemistry

View full text Add to dashboard Cite

show abstract

“…Sensors embedded in nanomaterials could enhance their selectivity, sensitivity, and accuracy toward pollution and contaminants [30,31]. Due to its simplicity, high accuracy, wide availability in most laboratories, and minimal cost, the UV-visible spectrophotometric technique is still the preferred and the most commonly included in detecting mercury ions and other inorganic compounds in various samples [32,33]. Certain nanozymes of various inorganic nanoparticles such as Pt, Au, Cu, Ni, and Ag have been reported for the detection of Hg 2+ ions based on their efficient catalytic peroxidase mimetic activity for oxidation of OPD or TMB in the presence of H 2 O 2 [34][35][36][37][38][39].…”

Section: Introductionmentioning

confidence: 99%

“…and other inorganic compounds in various samples [32,33]. Certain nanozymes of various inorganic nanoparticles such as Pt, Au, Cu, Ni, and Ag have been reported for the detection of Hg 2+ ions based on their efficient catalytic peroxidase mimetic activity for oxidation of OPD or TMB in the presence of H2O2 [34][35][36][37][38][39].…”

Section: Introductionmentioning

confidence: 99%

Sustainable PVP-Capped Silver Nanoparticles as a Free-Standing Nanozyme Sensor for Visual and Spectrophotometric Detection of Hg2+ in Water Samples: A Green Analytical Method

et al. 2022

View full text Add to dashboard Cite

In the proposed method, microwave-assist heating and AgNO3/trisodium citrate were used to create the polyvinylpyrrolidone-capped silver nanoparticles (PVP-AgNPs) sensor. This sensor had a peroxidase-like activity that could catalytically oxidize O-phenylenediamine (OPD, colourless) into 2,3-diaminophenazine (ox-OPD, greenish-yellow colour) in the presence of H2O2, otherwise, in the presence of Hg2+, this pass has been effectively inhibited. The degree of colour fading was directly correlated with Hg2+ concentration. These results indicated the selectivity of Hg2+ ions toward PVP-AgNPs after establishing the PVP-AgNPs/OPD/H2O2 system. This selectivity was proved by the negative results obtained from other mon-, di-, and trivalent ions such as Na+, K+, Ca2+, Mg2+, Ba2+, Co2+, Ni2+, Cd2+, and Cr3+, instead of Hg2+. Consequently, a reliable, selective, and eco-effective spectrophotometric approach was designed for the detection of Hg2+ in various types of water samples. LOD was extended to lower than 0.1 µM, and a fading in the obtained colour was shown by the naked eye at a concentration higher than 1.5 µM of Hg2+. The elemental details for preparing the used PVP-AgNPs, such as particle size, morphology, polydispersity index (PdI), and their UV-visible spectrum, were identified by SEM technique, TEM, UV-visible spectrophotometer, and zeta-sizer device. Thus, the peroxidase mimicking the activity of OPD/H2O2 was confirmed by a fluorescence technique. The greenness profile of this work was confirmed after applying a reported assessment tool.

show abstract

“…UV/Vis spectrophotometry is considered a good alternative for the determination of inorganics, thanks to its simplicity, low cost, versatility, energy efficiency, sensitivity, and availability [ 24 , 25 , 26 ]. It can be easily combined with various sample preparation techniques to improve analytical characteristics and extend the scope of application.…”

Section: Introductionmentioning

confidence: 99%

Use of a Hydrophobic Azo Dye for the Centrifuge-Less Cloud Point Extraction–Spectrophotometric Determination of Cobalt

et al. 2022

View full text Add to dashboard Cite

The hydrophobic azo dye 6-hexyl-4-(2-thiazolylazo)resorcinol (HTAR, H2L) was studied as part of a system for the centrifuge-less cloud point extraction (CL-CPE) and spectrophotometric determination of traces of cobalt. The extracted 1:2 (Co:HTAR) complex, [CoIII(HL−)(L2−)]0, shows an absorption maximum at 553 nm and contains HTAR in two different acid–base forms. Optimum conditions for its formation and CL-CPE were found as follows: 1 × 10−5 mol L−1 of HTAR, 1.64% of Triton X-114, pH of 7.8, incubation time of 20 min at ca. 50 °C, and cooling time of 30 min at ca. −20 °C. The linear range, limit of detection, and apparent molar absorptivity coefficient were 5.4–189 ng mL−1, 1.64 ng mL−1, and 2.63 × 105 L mol−1 cm−1, respectively. The developed procedure does not use any organic solvents and can be described as simple, cheap, sensitive, convenient, and environmentally friendly. It was successfully applied to the analysis of artificial mixtures and real samples, such as steel, dental alloy, rainwater, ampoules of vitamin B12, and saline solution for intravenous infusion.

show abstract

SPECTROPHOTOMETRY | Inorganic Compounds

Cited by 7 publications

References 1 publication

Spectrophotometric and Smartphone-based Dual Monitoring Method for the Determination of Al(III) Ions Using Fermented Black Carrot Juice (Şalgam/Shalgam) as a Green Chromogenic Agent

Spectrophotometric and Smartphone-based Dual Monitoring Method for the Determination of Al(III) Ions Using Fermented Black Carrot Juice (Şalgam/Shalgam) as a Green Chromogenic Agent

Sustainable PVP-Capped Silver Nanoparticles as a Free-Standing Nanozyme Sensor for Visual and Spectrophotometric Detection of Hg2+ in Water Samples: A Green Analytical Method

Use of a Hydrophobic Azo Dye for the Centrifuge-Less Cloud Point Extraction–Spectrophotometric Determination of Cobalt

Contact Info

Product

Resources

About