The release of the AgNPs from the AgNPs-CS crosslinked scaffolds in PBS was evaluated. A known amount of the monolith (ca. 12 mg) was put in 1 mL of PBS at 37 °C. The solvent was completely removed at different times (1, 2, 3, 4, 6 and 24 h) and fresh PBS was added. The removed PBS solution was dissolved in HNO3 0.1 M and filtered through a 0.45 mm regenerated cellulose filter (Albet, Relliehausen, Germany). The silver content was determined by inductively coupled plasma mass spectrometry using a OPTIMA 2100 DV spectrometer (PERKIN ELMER, Waltham, MA, USA).
Optima 2100 dv spectrometer
Manufactured by PerkinElmer
Sourced in United States
The OPTIMA 2100 DV is a dual-view, inductively coupled plasma (ICP) optical emission spectrometer manufactured by PerkinElmer. It is designed to perform multi-element analysis of samples across a wide range of industries, including environmental, food and beverage, and geological applications. The spectrometer utilizes a high-resolution optical system and advanced detector technology to provide accurate and reliable analytical results.
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Lab products found in correlation
Uv 3600 uv vis nir spectrophotometer, by Shimadzu (1 mentions)
Jsm 7500f scanning electron microscope, by JEOL (1 mentions)
D max 2200pc x ray diffractometer, by Rigaku (1 mentions)
Nicolet is50 ftir spectrometer, by Thermo Fisher Scientific (1 mentions)
X pert pro x ray diffractometer, by Malvern Panalytical (1 mentions)
Fs5 spectrofluorometer, by Edinburgh Instruments (1 mentions)
Cary 50 uv vis spectrophotometer, by Agilent Technologies (1 mentions)
Xl30 sfeg sem, by Thermo Fisher Scientific (1 mentions)
Multielement standard solution 4, by Merck Group (1 mentions)
4 protocols using optima 2100 dv spectrometer
1
Silver Release from AgNPs-CS Scaffolds
2
Comprehensive Characterization of Graphene Aerogel
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The morphology of the GA-GH and GH was examined by field-emission scanning electron microscopy (FESEM) on a JSM-7500F scanning electron microscope (JEOL Ltd., Tokyo, Japan). The chemical states of the element on the graphene aerogel surface were investigated by X-ray photoelectron spectroscopy, (XPS) using an XSAM 800 photoelectron spectroscope (Kratos Analytical, Ltd, Manchester, U.K.). X-ray diffraction (XRD) spectra were recorded on a D/max-2200/PC X-ray diffractometer (Rigaku Corporation, Tokyo, Japan) with Cu Kα radiation. Thermogravimetric analysis (TGA) was performed using a TG209F1 Libra Thermogravimetric Analyzer (Netzsch NETZSCH Group, GmbH, Selb, Germany), from room temperature to 750 °C at a heating rate of 20 °C min−1 in air. The concentration of Cr(iii ) was determined by ICP-OES, using an Optima 2100DV spectrometer (PerkinElmer, Waltham, MA, USA). UV-vis diffuse reflectance spectra (UV-vis DRS) were recorded using a UV-3600 UV-vis-NIR spectrophotometer (Shimadzu, Kyoto, Japan) equipped with an integrating sphere and using BaSO4 as reference. The specific surface areas of GA-GH and GH were calculated by the Brunauer–Emmett–Teller (BET) method.
3
Comprehensive Analytical Characterization of Electrochemical Catalysts
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An FEI Phillips XL30 SFEG SEM was used in the Electron Microscopy Suite in the Cavendish Laboratory, University of Cambridge. Powder X-ray diffraction (XRD) analysis was performed using a PANalytical BV X'Pert Pro X-ray diffractometer in the Department of Chemistry, University of Cambridge. XPS analysis was performed at the NEXUS XPS facility at Newcastle University. XPS spectra were calibrated to the C 1s signal at 284.8 eV. Quantification of Ni and Ru on the electrodes via ICP-OES (PerkinElmer Optima 2100 DV spectrometer) was carried out at the Department of Geography, University of Cambridge. High-resolution ATR-IR spectra were recorded on a Thermo Scientific Nicolet iS 50 FT-IR spectrometer with an ATR unit. UV-vis absorption spectra of electrodes were recorded in transmission mode in air, and UV-vis solution spectra were recorded in a quartz glass cuvette (1 cm path length) with a Varian Cary 50 UV-vis spectrophotometer. Fluorescence emission spectra of RuP3 in Na2SO4 (0.1 M, pH 3) were measured with an Edinburgh Instruments FS5 spectrofluorometer.
4
Quantification of NP Uptake in Plants
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Quantification of NP uptake by the vegetal tissue was carried out using inductively coupled plasma optical emission spectroscopy (ICP-OES) using a Perkin Elmer—OPTIMA 2100 DV spectrometer (Perkin Elmer, Llantrisant, UK). Sample digestion was carried out as follows: the plant samples (dried and milled), about 0.2 g were solubilized using a strong oxidizing acid mixture (9 mL HNO3—65%, 1 mL H2O2—30%) for 16 h in a laminar flow hood. Subsequently, the same amounts as above of acid oxidizing mixture were again added to samples, followed by heating in a sand bath, and gentle boiling for two hours under reflux. At the end, the completely dissolved samples were quantitatively adjusted to 50 mL with slightly acidified water. The Gd uptake, as well as the Ca, Cd, Cr, Cu, Fe, K, Mg, Mn, Na, Pb, and Zn content, was quantified for control and Gd exposed samples. Calibration curves were recorded using Gd standard solution (1000 mg/L Gd, Merck). The other elements were quantified using a multielement standard solution IV (1000 mg/L, 23 elements, Merck).
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