Bausch & Lomb-ARL: Where We Come From, Who We are

1981 ◽  
Vol 35 (2) ◽  
pp. 226-235 ◽  
Author(s):  
Robert L. Eklund
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Inductively Coupled Plasma ◽  
Applied Research ◽  
Optical Emission ◽  
X Ray ◽  
Inductively Coupled ◽  
Scanning Electron ◽  
Alex Haley

Remembering where we came from, points out author Alex Haley in Roots, helps us know who we are today. The roots of spectroscopy are closely intertwined with those of Bausch & Lomb-ARL, known to the industry for more than 45 years as Applied Research Laboratories. A member of Bausch & Lomb's Instrument Group, ARL today is a major multinational supplier of spectrochemical instruments in the optical emission, inductively coupled plasma (ICP), X-ray fluorescence and diffraction, microanalysis, and scanning electron microscopy fields. Its story begins with a graduate student's dream—which, unlike most dreams, came true.

scholarly journals Efflorescent Sulfate Crystallization on Fractured and Polished Colloform Pyrite Surfaces: A Migration Pathway of Trace Elements

Minerals ◽  
2019 ◽  
Vol 10 (1) ◽  
pp. 12
Author(s):  
Dimitrina Dimitrova ◽  
Vassilka Mladenova ◽  
Lutz Hecht
Keyword(s):  
Electron Microscopy ◽  
Trace Elements ◽  
Inductively Coupled Plasma ◽  
Microprobe Analysis ◽  
Electron Microprobe Analysis ◽  
X Ray ◽  
Inductively Coupled ◽  
Migration Pathway ◽  
Plasma Mass Spectrometry ◽  
Scanning Electron

The colloform pyrite variety incorporates many trace elements that are released in the environment during rapid oxidation. Colloform pyrite from the Chiprovtsi silver–lead deposit in Bulgaria and its oxidation efflorescent products were studied using X-ray diffractometry, scanning electron microscopy, electron microprobe analysis, and laser ablation inductively coupled plasma mass spectrometry. Pyrite is enriched with (in ppm): Co (0.1–964), Ni (1.8–3858), Cu (2.9–3188), Zn (3.1–77), Ag (1.2–1771), As (8179–52,787), Se (2.7–21.7), Sb (48–17792), Hg (4–2854), Tl (1.7–2336), Pb (13–7072), and Au (0.07–2.77). Gypsum, anhydrite, szomolnokite, halotrichite, römerite, copiapite, aluminocopiapite, magnesiocopiapite, coquimbite, aluminocoquimbite, voltaite, and ammoniomagnesiovoltaite were identified in the efflorescent sulfate assemblage. Sulfate minerals contain not only inherited elements from pyrite (Cr, Fe, Co, Ni, Cu, Zn, Ag, In, As, Sb, Hg, Tl, and Pb), but also newly introduced elements (Na, Mg, Al, Si, P, K, Ca, Sc, Ti, V, Mn, Ga, Rb, Sr, Y, Zr, Sn, Cs, Ba, REE, U, and Th). Voltaite group minerals, copiapite, magnesiocopiapite, and römerite incorporate most of the trace elements, especially the most hazardous As, Sb, Hg, and Tl. Colloform pyrite occurrence in the Chiprovtsi deposit is limited. Its association with marbles would further restrict the oxidation and release of hazardous elements into the environment.

scholarly journals Treatment of fly ash from power plants using thermal plasma

2017 ◽  
Vol 8 ◽  
pp. 1043-1048 ◽  
Author(s):  
Sulaiman Al-Mayman ◽  
Ibrahim AlShunaifi ◽  
Abdullah Albeladi ◽  
Imed Ghiloufi ◽  
Saud Binjuwair
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Fly Ash ◽  
Thermal Plasma ◽  
Inductively Coupled Plasma ◽  
Power Plants ◽  
Plasma Reactor ◽  
Atomic Emission ◽  
Inductively Coupled ◽  
Scanning Electron

Fly ash from power plants is very toxic because it contains heavy metals. In this study fly ash was treated with a thermal plasma. Before their treatment, the fly ash was analyzed by many technics such as X-ray fluorescence, CHN elemental analysis, inductively coupled plasma atomic emission spectroscopy and scanning electron microscopy. With these technics, the composition, the chemical and physical proprieties of fly ash are determined. The results obtained by these analysis show that fly ash is mainly composed of carbon, and it contains also sulfur and metals such as V, Ca, Mg, Na, Fe, Ni, and Rh. The scanning electron microscopy analysis shows that fly ash particles are porous and have very irregular shapes with particle sizes of 20–50 μm. The treatment of fly ash was carried out in a plasma reactor and in two steps. In the first step, fly ash was treated in a pyrolysis/combustion plasma system to reduce the fraction of carbon. In the second step, the product obtained by the combustion of fly ash was vitrified in a plasma furnace. The leaching results show that the fly ash was detoxified by plasma vitrification and the produced slag is amorphous and glassy.

scholarly journals Acetalization of Glycerol with Citral over Heteropolyacids Immobilized on KIT-6

Catalysts ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 81
Author(s):  
José Castanheiro
Keyword(s):  
Electron Microscopy ◽  
Inductively Coupled Plasma ◽  
Fixed Time ◽  
Tungstophosphoric Acid ◽  
X Ray Diffraction ◽  
Glycerol Conversion ◽  
X Ray ◽  
Inductively Coupled ◽  
Catalytic Stability ◽  
Scanning Electron

Glycerol acetalization with citral was studied using a heteropolyacid (tungstophosphoric acid) supported on KIT-6, as a catalyst, at 100 °C. Different catalysts were synthesized. Catalysts were characterized by scanning electron microscopy (SEM), inductively coupled plasma (ICP), X-ray diffraction (XRD), attenuated total refletion-Fourier transform infrared spectroscopy (ATR-FTIR), and potentiometric titrations. At a fixed time, the glycerol conversion increased with the H3PW12O40 (PW) on KIT-6. PW4-KIT-6 material had a higher conversion than other catalysts. The optimization of glycerol’s acetalization with citral was studied under the PW4-KIT-6 catalyst. After 5 h, it was found that, at T = 100 °C, with m = 0.3 g of solid, molar glycerol:citral = 1:2.25, the conversion of glycerol was 89%. Moreover, the PW4-KTI-6 catalyst showed good catalytic stability.

LOW PRESSURE CH2Cl2 PLASMA DISCHARGE

2015 ◽  
Vol 8 (3) ◽  
pp. 2240-2248
Author(s):  
Osvaldo Flores
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Langmuir Probe ◽  
Emission Spectroscopy ◽  
Optical Emission Spectroscopy ◽  
Optical Emission ◽  
Plasma Discharge ◽  
X Ray ◽  
Scanning Electron

Glow discharge of dichloromethane (DCM) was investigated employing Optical Emission Spectroscopy (OES), while the electron temperature and electron density were measured using a double Langmuir probe. Deposits formed were characterized by Scanning Electron Microscopy (SEM), X-ray Photo Fluorescence Spectroscopy (XPS) and Fourier Transform Infrared Spectroscopy (FTIR). The species identified by OES were the molecular bands of C2, C3, CH, H2, CH+, HCl+, Cl and C+. The material deposited displays a growing behavior. SEM observation shows several features which correspond to coalesce and growth mechanism. The characterization of the material deposited can explain the different stages of deposits that are formed on the electrode surface. Several factors are concerned in the complexity of the process, regarding the interaction of species formed during the plasma discharge. Involving several bonds types such as: C=C, C=C-CH2-Cl, C-C and CH.

scholarly journals Use of the System S2o3 (2-) -O2 for the Leaching of Precious Metals Contained in a Mineral From Molango in the State of Hidalgo, Mexico

2018 ◽  
Vol 14 (3) ◽  
pp. 48 ◽  
Author(s):  
Edmundo Roldán-Contreras ◽  
Juan Hernández-Ávila ◽  
Eduardo Cerecedo-Sáenz ◽  
Ma. Isabel Reyes-Valderrama ◽  
Eleazar Salinas-Rodríguez
Keyword(s):  
Electron Microscopy ◽  
Inductively Coupled Plasma ◽  
Energy Dispersive Spectrometry ◽  
Precious Metals ◽  
X Rays ◽  
X Ray ◽  
Plasma Spectrometry ◽  
Inductively Coupled ◽  
Inductively Coupled Plasma Spectrometry ◽  
Scanning Electron

The newer tendencies of research, related with the leaching of precious metals, involves the use of non toxic reagents that allows the leaching of a mineral of sedimentary origin using the system S2 - O3 2- - O2. Prior to thisprocess, the mineral was characterized by Scanning Electron Microscopy (SEM) in conjunction with Energy Dispersive Spectrometry of X – rays (EDS), X- ray mapping. Finally, the chemical composition was executed by Inductively Coupled Plasma Spectrometry (ICP). According to the results obtained, it was possible to determine that the mineral studied has adequate contents of gold, palladium, silver, and platinum. And after the leaching process, it could be possible to leach the gold and palladium that it contains, getting recoveries of 90% and 85 %, respectively. In the case of silver, a redissolution or precipitation could occur during the first minutes of reaction.

Fast, Clean and Low Damage Deprocessing Using Inductively Coupled and RIE Plasmas

1996 ◽  
Author(s):  
W.E. Vanderlinde ◽  
C.J. Von Benken ◽  
C.M. Davin ◽  
A.R. Crockett
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Integrated Circuits ◽  
Inductively Coupled Plasma ◽  
Etch Rate ◽  
Auger Spectroscopy ◽  
Inductively Coupled ◽  
Reactor Type ◽  
Working Device ◽  
Scanning Electron

Abstract Keeping devices active during deprocessing can be a major frustration for reliability engineers. Reactive ion etching (RIE) provides a rapid, controlled and acid-free method for delayering integrated circuits. However, RIE places a working device directly on a powered electrode, and this can produce surface contamination, charge damage, and waste many man-hours by destroying one-of-a-kind parts. This paper discusses a new reactor type which solves these problems, the inductively coupled plasma (ICP) source. A comparison of etch results (etch rate, surface cleanliness and plasma voltages) was performed in both reactive ion and inductively coupled plasma systems. Scanning electron microscopy (SEM) and surface analysis using scanning Auger spectroscopy were performed. Significant improvements in etch profiles and cleanliness of deprocessing were found.

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