Zobrazeno 1 - 10
of 66
pro vyhledávání: '"Petra Spitzer"'
Autor:
Diana Jehnert, Barbara Werner, Andre Felgner, Carla Vogt, Daniel Hagedorn, Karin Hanheiser, Nadine Schiering, Thorsten Dziomba, Anja Dreyer, Petra Spitzer
Publikováno v:
Journal of Solid State Electrochemistry. 23:485-495
For primary pH measurements, a platinum hydrogen electrode and a silver chloride electrode are immersed in the same solution in a cell without transference (Harned cell). The platinum electrode is covered with dispersed platinum (platinum black) to i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f84e14b26c94ad71dc4a5c9c23f1d5cd
https://doi.org/10.1007/s10008-018-4144-3
https://doi.org/10.1007/s10008-018-4144-3
Publikováno v:
CHIMIA, Vol 63, Iss 10 (2009)
The metrological traceability concept links measurement results by a chain of calibrations to the quantity values of primary standards, which are realised by primary measurement procedures. These procedures undergo periodical international comparison
Externí odkaz:
https://doaj.org/article/f353b9bfebd74282adc2cd6c971f253f
Autor:
Bárbara Anes, Hugo Martins, Paola Fisicaro, Filomena Camões, Daniela Stoica, Cristina M. Oliveira, Petra Spitzer
Publikováno v:
Journal of Electroanalytical Chemistry. 764:88-92
pH measurements are used to assess both the free acidity of aqueous solutions and the concentrations, mi, of chemical species i related to hydrogen ion, H+, through chemical equilibrium, provided that measurements in reference solutions with well-kno
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::738a9c67200369621fc0a2b77b76f0b2
https://doi.org/10.1016/j.jelechem.2016.01.014
https://doi.org/10.1016/j.jelechem.2016.01.014
Autor:
Trevor J. McDougall, Olaf Hellmuth, Robert Wielgosz, Maria Filomena Camões, Martti Heinonen, Rainer Feistel, Steffen Seitz, Henning Wolf, H J Kretzschmar, P. S. Ridout, J. R. Cooper, Paola Fisicaro, A G Dickson, Daniela Stoica, P Dexter, Rich Pawlowicz, J W Lovell-Smith, Allan H. Harvey, S A Bell, Petra Spitzer
Publikováno v:
Metrologia, vol 53, iss 1
Feistel, R; Wielgosz, R; Bell, SA; Camoes, MF; Cooper, JR; Dexter, P; et al.(2016). Metrological challenges for measurements of key climatological observables: oceanic salinity and pH, and atmospheric humidity. Part 1: overview. METROLOGIA, 53(1), R1-R11. doi: 10.1088/0026-1394/53/1/R1. UC San Diego: Retrieved from: http://www.escholarship.org/uc/item/20p2k889
Feistel, R, Wielgosz, R, Bell, S A, Camões, M F, Cooper, J R, Dexter, P, Dickson, A G, Fisicaro, P, Harvey, A H, Heinonen, M, Hellmuth, O, Kretzschmar, H-J, Lovell-Smith, J W, McDougall, T J, Pawlowicz, R, Ridout, P, Seitz, S, Spitzer, P, Stoica, D & Wolf, H 2016, ' Metrological challenges for measurements of key climatological observables: Oceanic salinity and pH, and atmospheric humidity. Part 1: Overview ', Metrologia, vol. 53, no. 1, pp. R1-R11 . https://doi.org/10.1088/0026-1394/53/1/R1
Feistel, R; Wielgosz, R; Bell, SA; Camoes, MF; Cooper, JR; Dexter, P; et al.(2016). Metrological challenges for measurements of key climatological observables: oceanic salinity and pH, and atmospheric humidity. Part 1: overview. METROLOGIA, 53(1), R1-R11. doi: 10.1088/0026-1394/53/1/R1. UC San Diego: Retrieved from: http://www.escholarship.org/uc/item/20p2k889
Feistel, R, Wielgosz, R, Bell, S A, Camões, M F, Cooper, J R, Dexter, P, Dickson, A G, Fisicaro, P, Harvey, A H, Heinonen, M, Hellmuth, O, Kretzschmar, H-J, Lovell-Smith, J W, McDougall, T J, Pawlowicz, R, Ridout, P, Seitz, S, Spitzer, P, Stoica, D & Wolf, H 2016, ' Metrological challenges for measurements of key climatological observables: Oceanic salinity and pH, and atmospheric humidity. Part 1: Overview ', Metrologia, vol. 53, no. 1, pp. R1-R11 . https://doi.org/10.1088/0026-1394/53/1/R1
Water in its three ambient phases plays the central thermodynamic role in the terrestrial climate system. Clouds control Earth's radiation balance, atmospheric water vapour is the strongest "greenhouse" gas, and non-equilibrium relative humidity at t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9edaa6d7fbee525752e30553b4b4b374
https://doi.org/10.1088/0026-1394/53/1/r1
https://doi.org/10.1088/0026-1394/53/1/r1
Autor:
Toshiaki Asakai, C.S. Oliveira, M. Roziková, Paul J. Brewer, M. Arce, L Vyskocil, Kenneth W. Pratt, A. Tromans, Beatrice Sander, Petra Spitzer, Emrah Uysal, A Reyes, Daniela Stoica, Michal Máriássy, Paola Fisicaro, Alena Vospelova, D. Panagoulia, Maria Filomena Camões, P T Jakobsen, Richard J. C. Brown, I. Godinho
Publikováno v:
Measurement. 66:131-138
The first practical comparison of the characteristics of Ag|AgCl electrodes prepared at different National Metrology Institutes (NMIs) has been carried out as a pilot study organised by the Consultative Committee for Amount of Substance (CCQM). Each
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e9171a572e370fb7ee4fafb85b607661
https://doi.org/10.1016/j.measurement.2015.01.029
https://doi.org/10.1016/j.measurement.2015.01.029
Autor:
Maria Filomena Camões, Petra Spitzer
Publikováno v:
ECS Transactions. 61:31-37
The free acidity of an aqueous solution is expressed in terms of its pH, a measure of the hydrogen ions activity. Being the most often measured chemical parameter, pH is used in the assessment of other chemical species and in comparative exercises. T
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4037eb88f47905cd6e38b47e47d765a1
https://doi.org/10.1149/06115.0031ecst
https://doi.org/10.1149/06115.0031ecst
Autor:
L Vyskocil, Kenneth W. Pratt, Nongluck Tangpaisarnkul, Akiharu Hioki, Petra Spitzer, Chainarong Cherdchu, Michal Máriássy, Masaki Ohata, David L. Duewer
Publikováno v:
Accreditation and Quality Assurance. 19:329-342
The key comparison (KC) studies of the Consultative Committee for Amount of Substance—Metrology in Chemistry help ensure the reliability of chemical and biochemical measurements relevant to international trade and environmental-, health-, and safet
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b84beef3037f2ec166e81671ede447fc
https://doi.org/10.1007/s00769-014-1076-1
https://doi.org/10.1007/s00769-014-1076-1
Autor:
Ralf Eberhardt, Alena Vospělová, Sirinapha Srithongtim, Olivier Brunschwig, Fabiano Barbieri Gonzaga, Wiler Batista da Silva Junior, Hanspeter Andres, Petra Spitzer, Beatrice Adel, Samuel Wunderli, Frank Bastkowski, Paulo Paschoal Borges, Caspar Demuth, Martina Vičarová, Michal Máriássy, Daniel Berdat, Roger Fehér
Publikováno v:
Accreditation and Quality Assurance. 18:469-479
Metrological comparability as well as reliability of ion activity results measured with ion-selective electrodes (ISE) was investigated within the framework of an interlaboratory comparison between eight partners from national metrology institutes an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b01354372a5c9d4fa659a9d6b96dc356
https://doi.org/10.1007/s00769-013-1016-5
https://doi.org/10.1007/s00769-013-1016-5
Autor:
Paola Fisicaro, Daniela Stoica, A G Dickson, Maria Filomena Camões, Rich Pawlowicz, Petra Spitzer, Rainer Feistel
Publikováno v:
Dickson, AG; Camoes, MF; Spitzer, P; Fisicaro, P; Stoica, D; Pawlowicz, R; et al.(2016). Metrological challenges for measurements of key climatological observables. Part 3: Seawater pH. METROLOGIA, 53(1), R26-R39. doi: 10.1088/0026-1394/53/1/R26. UC San Diego: Retrieved from: http://www.escholarship.org/uc/item/3wp1b3nr
Metrologia, vol 53, iss 1
METROLOGIA, vol 53, iss 1
Metrologia, vol 53, iss 1
METROLOGIA, vol 53, iss 1
Water dissolves many substances with which it comes into contact, leading to a variety of aqueous solutions ranging from simple and dilute to complex and highly concentrated. Of the multiple chemical species present in these solutions, the hydrogen i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::21fa431cfa699120a610cee9438b23d1
http://www.escholarship.org/uc/item/3wp1b3nr
http://www.escholarship.org/uc/item/3wp1b3nr
Publikováno v:
Ocean Science, Vol 7, Iss 1, Pp 45-62 (2011)
Consistency of observed oceanographic salinity data is discussed with respect to contemporary metrological concepts. The claimed small uncertainty of salinity measurement results traceable to the conductivity ratio of a certified IAPSO Standard Seawa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dec306498edc5fafbd3d415cbadfac49
https://doi.org/10.5194/os-7-45-2011
https://doi.org/10.5194/os-7-45-2011