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Varian 660 ir spectrometer

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The Varian 660-IR spectrometer is a laboratory instrument used for infrared spectroscopy analysis. It is designed to measure the absorption of infrared radiation by samples, which can provide information about the molecular structure and composition of the materials being analyzed.

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Lab products found in correlation

Varian 660 ir software package 5, by Agilent Technologies (3 mentions) Originpro, by OriginLab (3 mentions) Golden gate atr unit, by Specac (2 mentions) K alpha model, by Thermo Fisher Scientific (1 mentions) D8 advance a25, by Bruker (1 mentions) Nova 600 nanolab, by Thermo Fisher Scientific (1 mentions) Genesis edx system, by Thermo Fisher Scientific (1 mentions) Pw 1820 diffractometer, by Philips (1 mentions)

8 protocols using varian 660 ir spectrometer

1

Comprehensive Characterization of Samples

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The samples underwent a comprehensive characterization process. Initially, optical microscopy was employed for initial visualization. The vibrational modes were thoroughly analyzed using Fourier-transform infrared spectroscopy (FTIR), where samples mixed with potassium bromide (KBr) were subjected to a temperature of 150 °C for 24 h. High-resolution measurements were carried out with a Varian 660-IR spectrometer (Agilent, Santa Clara, CA, USA), set to 1 cm−1 resolution, and comprising 20 scans per measurement to guarantee the accuracy and reliability of the spectral data. For morphological analysis, field-emission scanning electron microscopy (FE-SEM) was performed using a JEOL 7401F microscope (Tokyo, Japan), enabling detailed observation of the samples’ surface and structure. Additionally, chemical composition and atomic-level studies were conducted using X-ray photoelectron spectroscopy (XPS) on a Thermo Fisher Scientific K-alpha model (Waltham, MA, USA). This utilized a monochromatic Alkα X-ray source for excitation, ensuring precise compositional analysis. All measurements were executed at room temperature to ensure consistent and reliable conditions across the analyses.
Cortés-Valadez P.J., Baños-López E., Hernández-Rodríguez Y.M, & Cigarroa-Mayorga O.E. (2024). Bryophyte-Bioinspired Nanoporous AAO/C/MgO Composite for Enhanced CO2 Capture: The Role of MgO. Nanomaterials, 14(8), 658.
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2

Micro-Milled Powder FTIR Analysis

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The material was ground to a micro-milled powder and analyzed in an ATR (attenuated total reflectance)-FTIR spectroscope/Varian 660-IR spectrometer (Agilent, Santa Clara, CA, USA) for Fourier transformed infrared spectroscopy (FTIR).
Wang S., Wang X., Neufurth M., Tolba E., Schepler H., Xiao S., Schröder H.C, & Müller W.E. (2020). Biomimetic Alginate/Gelatin Cross-Linked Hydrogels Supplemented with Polyphosphate for Wound Healing Applications. Molecules, 25(21), 5210.
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3

X-Ray and FTIR Spectral Analysis of Dried Powders

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For X-Ray powder diffraction (XRD) spectral analysis dried powder samples were analyzed in a D8 Advance A25 diffractometer (Bruker, Billerica; MA) with a monochromatic Cu-Kα radiation. The Fourier transformed infrared spectroscopic (FTIR) analyses were performed after grinding with a micro-mill in an ATR (attenuated total reflectance)-FTIR spectroscope/Varian 660-IR spectrometer (Agilent, Santa Clara; CA), fitted with a Golden Gate ATR unit (Specac, Orpington; UK).
Müller W.E., Neufurth M., Lieberwirth I., Muñoz-Espí R., Wang S., Schröder H.C, & Wang X. (2021). Triple-target stimuli-responsive anti-COVID-19 face mask with physiological virus-inactivating agents. Biomaterials Science, 9(18), 6052-6063.
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4

FTIR Spectroscopy of Powder Samples

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The Fourier transformed infrared spectroscopy (FTIR) was performed with ground powder in an ATR (attenuated total reflectance)-FTIR spectroscope/Varian 660-IR spectrometer (Agilent, Santa Clara; CA, USA), fitted with a Golden Gate ATR unit (Specac, Orpington, UK). The spectra were recorded in the range 500–4000 cm−1 with a resolution of 4 cm−1 (60 scans). The Varian 660-IR software package 5.2.0 (Agilent) was used for baseline correction, smoothing, and analysis, and Origin Pro (version 8.5.1; OriginLab, Northampton, MA, USA) for the graphical display and annotation of the spectra.
Wang S., Neufurth M., Schepler H., Tan R., She Z., Al-Nawas B., Wang X., Schröder H.C, & Müller W.E. (2023). Acceleration of Wound Healing through Amorphous Calcium Carbonate, Stabilized with High-Energy Polyphosphate. Pharmaceutics, 15(2), 494.
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5

Physicochemical Characterization of Microparticles

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X-ray diffraction (XRD) of the dried microparticle powder was performed with a Philips PW1820 diffractometer equipped with a monochromatic Cu-Kα radiation (λ = 1.5418 Å, 40 kV, 30 mA, 5 s, Δθ = 0.02), as described [27 ].
Energy dispersive X-ray (EDX) analysis was carried out with an EDAX Genesis EDX System attached to a scanning electron microscope (Nova 600 Nanolab; FEI, Eindhoven, The Netherlands) operating at 10 kV with a collection time of 30–45 s.
Fourier-transform infrared (FTIR) spectroscopy was conducted in an ATR-FTIR spectroscope/Varian 660-IR spectrometer (Agilent, Santa Clara; CA), equipped with a Golden Gate ATR unit (Specac, Orpington; UK). Each spectrum represents the average of 100 scans with a spectral resolution of 4 cm-1 (typically 550–1800 cm-1). A baseline correction, smoothing, and analysis of the spectra were achieved with the Varian 660-IR software package 5.2.0 (Agilent). The graphical display and annotation of the spectra were achieved with Origin Pro (version 8.5.1; OriginLab, Northampton; MA). The spectral peaks were assigned according to published data [14 ,28 (link)–31 (link)].
Müller W.E., Wang S., Wiens M., Neufurth M., Ackermann M., Relkovic D., Kokkinopoulou M., Feng Q., Schröder H.C, & Wang X. (2017). Uptake of polyphosphate microparticles in vitro (SaOS-2 and HUVEC cells) followed by an increase of the intracellular ATP pool size. PLoS ONE, 12(12), e0188977.
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6

Cement Material FTIR Spectroscopy

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Fourier transformed infrared spectroscopy (FTIR) was performed with ground cement material using a micro-mill and applying an ATR (attenuated total reflectance)-FTIR spectroscope/Varian 660-IR spectrometer (Agilent, Santa Clara, CA, USA), fitted with a Golden Gate ATR unit (Specac, Orpington, UK), as described [33 (link)].
Tolba E., Wang S., Wang X., Neufurth M., Ackermann M., Muñoz-Espí R., Abd El-Hady B.M., Schröder H.C, & Müller W.E. (2020). Self-Healing Properties of Bioinspired Amorphous CaCO3/Polyphosphate-Supplemented Cement. Molecules, 25(10), 2360.
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7

FTIR Spectroscopy of Sample Discs

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Fourier transformed infrared spectroscopy (FTIR) was carried out with an ATR (attenuated total reflectance)-FTIR spectroscope/Varian 660-IR spectrometer (Agilent, Santa Clara, CA, USA), fitted with a Golden Gate ATR unit (Specac, Orpington, UK). The samples were pressed to small discs and subjected to the determination.
Neufurth M., Wang X., Wang S., Schröder H.C, & Müller W.E. (2021). Caged Dexamethasone/Quercetin Nanoparticles, Formed of the Morphogenetic Active Inorganic Polyphosphate, are Strong Inducers of MUC5AC. Marine Drugs, 19(2), 64.
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8

Characterization of Mineral Powder Using XRD and FTIR

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X-ray diffraction (XRD) experiments were performed as described previously. 35 The patterns of dried powders were registered on a Philips PW 1820 diffractometer with CuKa radiation (l = 1.5418 Å, 40 kV, 30 mA) in the range 2y = 5-651 (D2y = 0.02, Dt = 5 s). The calcite and vaterite phases were identified as described. 36, 37 2.4 Fourier transformed infrared spectroscopy Fourier transformed infrared spectroscopic (FTIR) analyses were performed with micro-milled (agate mortar and pestle) mineral powder in an ATR (attenuated total reflectance)-FTIR spectroscope/Varian 660-IR spectrometer (Agilent, Santa Clara, CA), This journal is © The Royal Society of Chemistry 2016 fitted with a Golden Gate ATR unit (Specac, Orpington, UK). 19 The spectra given represent the average of 100 scans with a spectral resolution of 4 cm À1 (typically 550-4000 cm À1 ). The baseline correction, smoothing, and analysis of the spectra were achieved using the Varian 660-IR software package 5.2.0 (Agilent). Graphical display and annotation of the spectra were performed with Origin Pro (version 8.5.1; OriginLab, Northampton, MA).
Tolba E ., Müller WEG ., Abd El-Hady BM ., Neufurth M ., Wurm F ., Wang S ., Schröder HC , & Wang X . (2016). High biocompatibility and improved osteogenic potential of amorphous calcium carbonate/vaterite. Journal of materials chemistry. B, 4(3).
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