Mass spectral investigation of mechanisms of lead vaporization from a graphite surface used in electrothermal atomizers

Bass, Dean A.; Holcombe, James A.

doi:10.1021/ac00134a011

Cited by 73 publications

(31 citation statements)

References 18 publications

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“…Determination of primary products of decomposition by quadrupole mass spectrometry allowed the observation of low-volatility metal oxide molecules in the gas phase. The appearance of PbO molecules in the thermal decomposition of lead nitrate was first reported by Sturgeon et al [8] and was subsequently confirmed by Bass and Holcombe [9]. Later, Holcombe and co-workers revealed the presence of NiO [10], CuO and Cu 2 O [11], CdO [12] and CrO and Cr 2 O 3 [13] molecules during the thermal decomposition of nickel, copper, cadmium and chromium nitrates.…”

Section: Basic Discoveries By Atomic Absorption Spectrometry and Quadmentioning

confidence: 72%

Kinetics and mechanism of solid decompositions — From basic discoveries by atomic absorption spectrometry and quadrupole mass spectroscopy to thorough thermogravimetric analysis

Львов

2008

Spectrochimica Acta Part B: Atomic Spectroscopy

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Section: Basic Discoveries By Atomic Absorption Spectrometry and Quadmentioning

confidence: 72%

Kinetics and mechanism of solid decompositions — From basic discoveries by atomic absorption spectrometry and quadrupole mass spectroscopy to thorough thermogravimetric analysis

Львов

2008

Spectrochimica Acta Part B: Atomic Spectroscopy

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“…The existence of such a mechanism was found as a result of direct observation of low-volatile decomposition products (molecules and atoms) in the gas phase by ET quadrupole mass spectrometry (QMS) by Sturgeon et al [35] and Holcombe et al [36,37]. The story of this discovery was outlined in [38].…”

Section: Identification Of Two Modes Of Evaporationmentioning

confidence: 99%

On the way from the activation model of solid decomposition to the thermochemical model

Львов

2015

Reac Kinet Mech Cat

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The development of the technology and the theory of electrothermal atomization, which began in atomic absorption spectrometry about 60 years ago, led to a confrontation between the two alternative models used in the kinetics of heterogeneous chemical reactions: the activation model proposed by Arrhenius (Z Phys Chem 4:226-248, 1889) and based on the effect of activation, and the thermochemical model (TM) proposed by Langmuir (Phys Rev 2:329-342, 1913), which excludes the existence of this effect. An analysis of the events surrounding the creation and evolution of both models and a comparison of their fundamental principles and their application to the solution of actual problems show the shortcomings of the activation model and fundamental limitations in its applicability. The TM for the first time in the history of these studies allowed a quantitative estimation and a prediction of the lifetime for substances depending on the environment and temperature of their storage. It allows the calculation of the rate of reaction and the Arrhenius parameters taking into account the composition, stoichiometry and thermochemical characteristics of the reaction, the excess pressure of the gaseous product in the reactor and the physical properties of the reactant (sample size and the density of the reactant). Within the TM, it was possible to solve many of the accumulated problems, including the physical nature of the parameters of the Arrhenius equation, the effect of autocatalysis, the kinetic compensation effect and the Topley-Smith effect. To overcome the lasting crisis in the kinetics of heterogeneous reactions, it is necessary to advance the public discussion of the current situation and search for appropriate ways to replace the activation model by the TM.

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“…In the 1980s, quadrupole mass spectrometry (QMS) was used for the first time for these purposes [1][2][3][4][5]. In most cases [2][3][4][5], the objects under investigation were solutions of metal nitrates.…”

Section: Mass-spectrometry Studiesmentioning

confidence: 99%

History of one discovery

Львов

2015

Spectrochimica Acta Part B: Atomic Spectroscopy

View full text Add to dashboard Cite

Mass spectral investigation of mechanisms of lead vaporization from a graphite surface used in electrothermal atomizers

Cited by 73 publications

References 18 publications

Kinetics and mechanism of solid decompositions — From basic discoveries by atomic absorption spectrometry and quadrupole mass spectroscopy to thorough thermogravimetric analysis

Kinetics and mechanism of solid decompositions — From basic discoveries by atomic absorption spectrometry and quadrupole mass spectroscopy to thorough thermogravimetric analysis

On the way from the activation model of solid decomposition to the thermochemical model

History of one discovery

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