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Articoli di riviste sul tema "Limit de detecció (limit of detection"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 3 febbraio 2022

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1

Camero Jiménez, José W., e Víctor A. Huamaní León. "IMPLEMENTACIÓN DE LA TÉCNICA ANALÍTICA BARIO EN AGUA RESIDUAL POR ESPECTROMETRÍA DE ABSORCIÓN ATÓMICA". Revista Cientifica TECNIA 24, n. 1 (6 febbraio 2017): 21. http://dx.doi.org/10.21754/tecnia.v24i1.28.

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La implementación de un método de ensayo asegura la confiabilidad analítica del resultado de ensayo, razón por la cual el presente trabajo aborda la implementación del método analítico descrito en el Standard Methods 3111 D - Direct Nitrous Oxide - Acetylene Flame Method para la determinación de bario, en la matriz de agua residual, utilizando un espectrómetro de absorción atómica. Está implementación tiene el enfoque del sistema de gestión de calidad de laboratorios de ensayo ISO/IEC 17025:2005, siendo los parámetros estadísticos evaluados: la exactitud (veracidad y precisión), límite de detección del método, límite de cuantificación, rango de trabajo, linealidad, sensibilidad y robustez. Palabras clave.- Espectrómetro de absorción atómica, Bario, Implementación, Exactitud, Límite de detección del método, Agua residual, ISO/IEC 17025. ABSTRACTThe implementation of a test method ensures the analytical reliability of the test result, reason why the present paper deals with the implementation of the analytical method described in the Standard Methods 3111 D - Direct Nitrous Oxide - Acetylene Flame Method for the determination of barium in the matrix of wastewater, using an atomic absorption spectrometer. It is implementation has the approach of the system of management of quality of testing laboratories ISO/IEC 17025: 2005, being evaluated statistical parameters: accuracy (trueness and precision), method detection limit, quantification limit, working range, linearity, sensitivity and robustness. Keywords.- Atomic absorption spectrometer, Barium, Implementation, Accuracy, Method detection limit, Wastewater, ISO/IEC 17025.

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Vergara, José Gabriel, Daniel Verbel-Vergara, Ana Milena Montesino, Alveiro Pérez-Doria e Eduar Elías Bejarano. "Estimation of time detection limit for human cytochrome b in females of Lutzomyia evansi". Biomédica 37 (29 marzo 2017): 187. http://dx.doi.org/10.7705/biomedica.v37i0.3396.

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Introducción. Las técnicas de biología molecular han permitido ampliar el conocimiento sobre las fuentes de ingestión de sangre de los insectos vectores. Sin embargo, la utilidad de estas técnicas depende de la cantidad de sangre ingerida y del proceso de digestión en el insecto.Objetivo. Determinar el tiempo límite de detección del gen citocromo b (Cyt b) de humanos en hembras de Lutzomyia evansi alimentadas experimentalmente.Materiales y métodos. Se evaluaron ocho grupos de hembras de L. evansi alimentadas con sangre humana, las cuales fueron sacrificadas en intervalos de 24 horas desde el momento de la ingestión sanguínea. Se extrajo el ADN total de cada hembra y se amplificó un segmento de 358 pb del gen Cyt b. Los productos amplificados fueron sometidos a un análisis de polimorfismos en la longitud de los fragmentos de restricción (Restriction Fragment Length Polymorphism, RFLP), con el fin de descartar falsos positivos.Resultados. El segmento del gen Cyt b de humanos fue detectado en 86 % (49/57) de las hembras de L. evansi a partir de las 0 horas y hasta 168 horas después de la ingestión de sangre. En 7 % (4/57) de los individuos se amplificó el ADN del insecto y en el 7 % restante no se amplificó la banda de interés. No se encontraron diferencias estadísticas en cuanto a la amplificación del segmento del gen Cyt b de humanos ni al número de muestras amplificadas entre los grupos de hembras sacrificadas a distintas horas después de la ingestión.Conclusión. El segmento del gen Cyt b de humanos fue detectable en hembras de L. evansi hasta 168 horas después de la ingestión de sangre.

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Noa-Pérez, Mario, Miriam Cortés-Marín, Patricia Landeros-Ramírez, Zoila Gómez-Cruz, Mario Real-Navarro, Ramón Reynoso-Orozco, Teresa de Jesús Jaime Ornelas e Carlos Juárez-Woo. "LÍMITES DE DETECCIÓN DE ALGUNOS MÉTODOS DE PRUEBA PARA ADULTERANTES E INHIBIDORES EN LECHE". e-CUCBA 15, n. 8 (21 gennaio 2021): 33–43. http://dx.doi.org/10.32870/e-cucba.v0i15.177.

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The Mexican Regulations on milk classifies a product as adulterated when it has either undergone treatment that conceals its alteration and/or defects in its process or in the sanitary quality of the raw materials, among other criteria. The principal, most widely known adulterants incorporated into milk, include those added to increase milk volume and mask acidification. Milk should also test negative for the presence of inhibitors,e.g. antibiotics or disinfectants. The objective of this work was to determine the LOD for starches, sucrose, gelatin, chlorinated disinfectants; oxidants, quaternary ammonium and 14 most widely used microbial growth inhibitors in milk. This is because although the prohibition of these substances is clearly established, the detection limits (LOD) are not declared in the current regulation. With this finality, qualitative chemical analytical methodologiesfor detection of adulterants described in the Mexican Standards were implemented, as well as for the Yogurt Inhibition Test. Microbiological quality skim milk powder was used as a negative control, and the commercial culture YO-MIX ™ was used for the Yogurt Inhibition Test. The following LOD were obtained by chemical methods for starches (125and250 mg/kg), gelatin (250 mg/kg), hydrogen peroxide (6 mg/kg), sodium hypochlorite (25 mg/kg), benzalkonium chloride (12 mg/kg), N-Alkyl (C12,16) -N, N-dimethyl-N-benzylammonium (6 mg/kg). The yogurt test showed higher LOD for the disinfectants: 25,000 mg/kg for sodium hypochlorite and 60 mg/kg for the quaternary ammonium compounds. On the other hand, although oxidants were not detectable the yogurt testwas sufficiently sensitive to detect the Maximum Residue Limits (MRLs) for the 14 antimicrobials tested. Carrying out both types of tests, chemical and yogurt, to determine disinfectants and inhibitors at the levels of interest in milk is recommended.

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4

Colina, Marinela, Jennifer Smith, Gilberto Colina e Brinolfo Montilla. "Desarrollo de un Método para la Especiación de Selenio en Muestras de Cerveza". Revista Bases de la Ciencia. e-ISSN 2588-0764 3, n. 1 (30 aprile 2018): 1. http://dx.doi.org/10.33936/rev_bas_de_la_ciencia.v3i1.1032.

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Se desarrolló un método por cromatografía iónica (CI) para la especiación de selenio en muestras líquidas de cerveza, empleando H2O2 y luz UV como sistema oxidante. Las especies aniónicas de selenio fueron separadas utilizando una columna aniónica AS4A y un guarda columna AG4 Dionex, la fase móvil empleada fue de 1,7 mM NaHCO3/1,8 mMNa2CO3, para la cuantificación se empleó un detector de conductividad iónica. El tiempo de retención del ión Se(IV) fue de 7,8 min y para Se(VI) de 15,7 min. Los límites de detección obtenidos para Se(IV) y Se(VI) fueron de 0,15 y 0,28 mgL-1, respectivamente. Se establecieron las condiciones óptimas de análisis del proceso de oxidación de los compuestos puros de selenio: selenito y selenio-DL- metionina, mediante el estudio de diferentes parámetros como cantidad de peróxido adicionado, tiempo de digestión y pH. La separación de los iones Se(IV) y Se(VI) en muestras de cerveza se realizó empleando una fase móvil de 2,0 mM de carbonato de sodio y 1,0 mM de hidróxido de sodio, ésta mezcla separa los iones de selenio sin tener problemas de interferencias de nitrato, fosfato y sulfato. Los límites de detección determinados para Se(IV) y Se(VI) fueron 0,08 y 0,07 mgL-1, respectivamente. El método desarrollado se comparó con un método referencial ICP AES, obteniéndose excelentes resultados. Palabras clave: Especiación, selenio, cerveza, cromatografía iónica. ABSTRACT In this work, analytical methodologies were developed for the determination of mercury levels in blood and plasma samples of patients with leukemia registered at the Haematological Institute of the West, Maracaibo, evaluating the total concentration of Hg and its chemical species in blood samples from the patients studied (n = 34) and of control subjects (n = 5), by the HPLC-ICP-MS. The calculated limit of detection found for the determination of Hg in blood and plasma was 1.39 μg Hg/L and the limit of quantification was 1.39 μg Hg.L-1. The total mercury concentrations in blood and plasma of 16.89±8.76 μg Hg.L-1 [8.22-45 μg Hg.L-1] and 25.77±5.12 μg Hg.L-1 [10.6-40.87μg Hg.L-1] respectively and for the control population were 25.3637±11.4 [10.6-40.87 μg Hg.L-1] and 74.46±16.09 [64.38-102.82 μg Hg.L-1]. The mean of Hg-S of the group of males evaluated was 16.08±7.85 µg Hg.L-1, and in females were 18.68±10.05 μg.L-1, the mean of Hg-S in the females was significantly higher (P <0.05) than the mean Hg-S observed. The detection limits for the Hg chemical species studied in blood are: Hg+ (0,7 µg Hg.L-1), Hg+2 (0,53 µg Hg.L-1). The concentrations found for Hg+2 and CH3Hg+ in leukemia patients in blood and plasma were 8.16±1.67 [6.96-10.97], 9.85±6.22 μg Hg+2.L-1 [6.04-20.74], and 11.47±4.33 μg Hg+2.L-1 [7.28-18.63], 11.28±5.40 [6.24-18.63] respectively, while for the control population were 10.04±3.84 μg Hg+2.L-1 [5.41-15.86], 12.24±5.76 [6.00-21.37] and 33,48±8.62 μg Hg+2.L-1 [27.59-48.36], 28.44±13.13 [18.25-50.23]. Key words: leukemia, mercury, blood, plasma.

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Colina, Marinela, Carolina Sthormes, Rodolfo Salas, Jervis Navas, Víctor Granadillo e Brinolfo Montilla. "Determinación de los Niveles de Mercurio en Sangre y Plasma de Pacientes con Leucemia". Revista Bases de la Ciencia. e-ISSN 2588-0764 3, n. 1 (30 aprile 2018): 25. http://dx.doi.org/10.33936/rev_bas_de_la_ciencia.v3i1.1030.

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Se desarrollaron metodologías analíticas para la determinación de los niveles de mercurio en muestras de sangre completa y plasma de pacientes con leucemia registrados en el instituto Hematológico de Occidente, Maracaibo, evaluando la concentración total de Hg y sus especies químicas en muestras sanguíneas de los pacientes estudiados (n=34) y de sujetos controles (n=5), a través de HPLC-ICP-MS. El límite de detección obtenido calculado para la determinación de Hg en sangre completa y plasma fue de 1,39 µg HgL-1 y el límite de cuantificación fue 1,39 µg HgL-1. Las concentraciones totales de mercurio en sangre y plasma fueron 16,89±8,76 µg HgL-1 [8,22-45 µg HgL-1] y 25,77±5,12 µg HgL-1 [10,6-40,87µg HgL-1] respectivamente, mientras que para la población control fueron de 25,36±11,4 [10,6-40,87 µg HgL-1] y 74,46±16,09 [64,38-102,82 µg HgL-1]. La media de Hg-S del grupo de los varones evaluado fue 16,08±7,85 µg HgL-1 y en las hembras 18,68±10,05 µgL-1, la media de Hg-S en las hembras fue significativamente superior (P<0,05) que la media de Hg-S observada. Los límites de detección para las especies químicas de Hg estudiadas en sangre resultaron: CH3Hg+ (0,7 µg HgL-1), Hg+2 (0,53 µg HgL-1). Las concentraciones encontradas de Hg+2 y CH3Hg+ en los pacientes de leucemia en sangre completa y plasma fueron 8,16±1,67 [6,96 – 10,97], 9,85±6,22 µg Hg+2.L-1 [6,04 – 20,74], y 11,47±4,33 µg Hg+2.L-1 [7,28 – 18,63], 11,28±5,40 [6,24 – 18,63] respectivamente, mientras que para la población control fueron 10,04±3,84 µg Hg+2.L-1 [5,41 – 15,86], 12,24±5,76 [6,00 – 21,37] y 33,48±8,62 µg Hg+2.L-1 [27,59 – 48,36], 28,44±13,13 [18,25 – 50,23]. Palabras clave: leucemia, mercurio, sangre, plasma. ABSTRACT: In this work, analytical methodologies were developed for the determination of mercury levels in blood and plasma samples of patients with leukemia registered at the Haematological Institute of the West, Maracaibo, evaluating the total concentration of Hg and its chemical species in blood samples from the patients studied (n = 34) and of control subjects (n = 5), by the HPLC-ICP-MS. The calculated limit of detection found for the determination of Hg in blood and plasma was 1.39 μg Hg/L and the limit of quantification was 1.39 μg Hg.L-1. The total mercury concentrations in blood and plasma of 16.89±8.76 μg Hg.L-1 [8.22-45 μg Hg.L-1] and 25.77±5.12 μg Hg.L-1 [10.6-40.87μg Hg.L-1] respectively and for the control population were 25.3637±11.4 [10.6-40.87 μg Hg.L-1] and 74.46±16.09 [64.38-102.82 μg Hg.L-1]. The mean of Hg-S of the group of males evaluated was 16.08±7.85 µg Hg.L-1, and in females were 18.68±10.05 μg.L-1, the mean of Hg-S in the females was significantly higher (P <0.05) than the mean Hg-S observed. The detection limits for the Hg chemical species studied in blood are: Hg+ (0,7 µg Hg.L-1), Hg+2 (0,53 µg Hg.L-1). The concentrations found for Hg+2 and CH3Hg+ in leukemia patients in blood and plasma were 8.16±1.67 [6.96-10.97], 9.85±6.22 μg Hg+2.L-1 [6.04-20.74], and 11.47±4.33 μg Hg+2.L-1 [7.28-18.63], 11.28±5.40 [6.24-18.63] respectively, while for the control population were 10.04±3.84 μg Hg+2.L-1 [5.41-15.86], 12.24±5.76 [6.00-21.37] and 33,48±8.62 μg Hg+2.L-1 [27.59-48.36], 28.44±13.13 [18.25-50.23]. Key words: leukemia, mercury, blood, plasma.

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6

Peinado Lorca, Manuel. "Población, cambio climático y huella ambiental // Population, Climate Change and Environmental Footprint". Ecozon@: European Journal of Literature, Culture and Environment 9, n. 1 (28 aprile 2018): 11–36. http://dx.doi.org/10.37536/ecozona.2018.9.1.2172.

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Resumen En 1679 Anthony van Leeuwenhoek fue el primero en especular acerca del número de seres humanos que podría albergar la Tierra. Desde entonces y, sobre todo, desde que Thomas Malthus publicó en 1798 su célebre ensayo, el debate demográfico –particularmente exacerbado en la segunda mitad del siglo pasado, cuando la tasa de crecimiento poblacional duplicaba a la actual- se estableció en dos frentes, el de los boomsters, que sostienen que no hay límites para la explotación de los recursos terrestres, y el de los doomsters, para los que los recursos del planeta tienen unos límites que estamos a punto de desbordar. La detección en la década de 1990 de los primeros síntomas del calentamiento global ha marginado a unos y otros. Hoy, el debate no se centra en los límites de los recursos, sino en los excesos de emisiones de gases de efecto invernadero con los que nuestro sistema económico consumista está alterando el equilibrio global de la Tierra. La superpoblación sigue siendo el problema, pero la unidad de medida de hoy es nuestra huella ambiental evaluada en términos de producción de gases de efecto invernadero, los responsables de la aceleración del cambio climático global. Abstract In 1679 Anthony van Leeuwenhoek was the first person speculating about the number of human beings that the Earth could harbour. Since then and, above all, since Thomas Malthus published his famous essay in 1798, the demographic debate—especially exacerbated in the second half of the last century, when the population growth rate doubled the current one—was established on two fronts, that of boomsters, who argue that there are no limits to the exploitation of the Erath resources; and that of doomsters, for whom the Earth resources have a limit that we are about to overflow. The detection in the 1990s of the first symptoms of global warming has marginalised ones and the others. Nowadays, the debate is not focused on the limits of resources, but on the excessive emissions of greenhouse gases with which our consumer economic system is altering the global balance of the Earth. Overpopulation is still the problem, but the current unit of measure is our environmental footprint assessed in terms of the production of greenhouse gases, which are responsible for the global climate change.

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Porter, P. Steven, Robert C. Ward e Harry F. Bell. "The detection limit". Environmental Science & Technology 22, n. 8 (agosto 1988): 856–61. http://dx.doi.org/10.1021/es00173a001.

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Chambless, Donald A., Stephanie S. Dubose e Edwin L. Sensintaffar. "Detection Limit Concepts". Health Physics 63, n. 3 (settembre 1992): 338–40. http://dx.doi.org/10.1097/00004032-199209000-00010.

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Elston, Harry J. "Detection Limit Creep". Chemical Health and Safety 12, n. 4 (luglio 2005): 4. http://dx.doi.org/10.1016/j.chs.2005.05.004.

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Demertzis, Mavroudis A. "Low detection limit spectrophotometry". Analytica Chimica Acta 505, n. 1 (marzo 2004): 73–76. http://dx.doi.org/10.1016/s0003-2670(03)00512-9.

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Fortunato, S., e M. Barthelemy. "Resolution limit in community detection". Proceedings of the National Academy of Sciences 104, n. 1 (26 dicembre 2006): 36–41. http://dx.doi.org/10.1073/pnas.0605965104.

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Garner, Forest C., e Gary L. Robertson. "Evaluation of detection limit estimators". Chemometrics and Intelligent Laboratory Systems 3, n. 1-2 (febbraio 1988): 53–59. http://dx.doi.org/10.1016/0169-7439(88)80066-2.

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Ferŕus, Ricard, e Maria Rosa Egea. "Limit of discrimination, limit of detection and sensitivity in analytical systems". Analytica Chimica Acta 287, n. 1-2 (marzo 1994): 119–45. http://dx.doi.org/10.1016/0003-2670(94)85109-3.

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Raychev, Nikolay. "Fundamental Limit for Universal Entanglement Detection". Journal of Applied Mathematics and Physics 04, n. 08 (2016): 1567–77. http://dx.doi.org/10.4236/jamp.2016.48166.

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Ungerer, Jacobus P. J. "Limit of detection – A contrarian's view". Pathology 48 (febbraio 2016): S17. http://dx.doi.org/10.1016/j.pathol.2015.12.047.

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Winkler, S., L. K. Fifield, S. G. Tims e C. R. Morton. "Improving the detection limit for 182Hf". Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms 259, n. 1 (giugno 2007): 256–59. http://dx.doi.org/10.1016/j.nimb.2007.01.168.

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Krouwer, J. S. "The CV at the detection limit." Clinical Chemistry 35, n. 5 (1 maggio 1989): 901. http://dx.doi.org/10.1093/clinchem/35.5.901a.

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Proctor, Charles H. "A simple definition of detection limit". Journal of Agricultural, Biological, and Environmental Statistics 13, n. 1 (marzo 2008): 99–120. http://dx.doi.org/10.1198/108571108x273476.

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Antonsen, S., P. Hyltoft Petersen e C. G. Fraser. "6.1.1.6 Quality Specifications for Detection Limit". Upsala Journal of Medical Sciences 98, n. 3 (gennaio 1993): 317–21. http://dx.doi.org/10.3109/03009739309179326.

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Bernal, D., E. Memarzadeh e M. Ulriksen. "Limit cycle periods in damage detection". Mechanical Systems and Signal Processing 162 (gennaio 2022): 108037. http://dx.doi.org/10.1016/j.ymssp.2021.108037.

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Klembt, Sebastian. "Light detection nears its quantum limit". Nature 597, n. 7877 (22 settembre 2021): 483–84. http://dx.doi.org/10.1038/d41586-021-02489-4.

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HORIKOSHI, Gen'ichi, e Kazuhisa KAKIHARA. "Leak-detection Limit by Counter Flow Type Leak Detector. A Proposal How to lmprove Detection Limit." SHINKU 38, n. 3 (1995): 195–98. http://dx.doi.org/10.3131/jvsj.38.195.

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Ferguson, Megan A., Diego P. Fernandez e Janet G. Hering. "Lowering the detection limit for arsenic: implications for a future practical quantitation limit". Journal - American Water Works Association 99, n. 8 (agosto 2007): 92–98. http://dx.doi.org/10.1002/j.1551-8833.2007.tb08010.x.

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Malon, Adam, Aleksandar Radu, Wei Qin, Yu Qin, Alan Ceresa, Magdalena Maj-Zurawska, Eric Bakker e Ernö Pretsch. "Improving the Detection Limit of Anion-Selective Electrodes: An Iodide-Selective Membrane with a Nanomolar Detection Limit". Analytical Chemistry 75, n. 15 (agosto 2003): 3865–71. http://dx.doi.org/10.1021/ac026454r.

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Pirela, Danis, Gleidy Vivas, Ligbel Sánchez e Hendrik Avila. "Determinación de F-, CL-, NO3- y SO42- en muestras de agua, por cromatografía iónica y métodos tradicionales". Revista Bases de la Ciencia. e-ISSN 2588-0764 2, n. 2 (31 agosto 2017): 39. http://dx.doi.org/10.33936/rev_bas_de_la_ciencia.v2i2.893.

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RESUMEN El análisis químico debe generar resultados correctos y confiables, siendo importante la validación del método para la realización de servicios científicos técnicos, con calidad de los resultados. Se determinó la concentración de los F-, Cl-, NO3- y SO42- por métodos tradicionales y cromatografía iónica. Se evaluó la precisión en término de repetibilidad y la exactitud en porcentaje de recuperación utilizando patrones certificados. Se obtuvieron desviaciones estándar relativas en un intervalo de 0,70 a 4% y porcentajes de recuperación entre 98 y 99% para el análisis por cromatografía iónica. El límite de detección para el método de cromatografía iónica se encontró entre 0,005 y 0,1391 mg/L y mostró una linealidad de 0,999. Los resultados demuestran que el método de cromatografía iónica es más sensible y rápido al ser comparado con los métodos tradicionales, con comportamientos similares para la determinación de los iones de fluoruro y sulfato, pero diferentes en la determinación de los iones de cloruro y nitrato. Palabras clave: Cromatografía iónica, fluoruro, cloruro, sulfato, nitrato, comparación de métodos. ABSTRACT Chemical analysis must generate correct and reliable results, method validation for scientific-technical services with quality results, to be important. Comparing the results obtained by traditional methods and ion chromatography in the determination of F-, Cl-, NO3- and SO42-- was conducted. Was evaluated in terms of repeatability precision and for accuracy tests of recovery using certified patterns were carried out. Relative standard deviations in a range from 0.70 to 4% and recovery rates between 98 and 99% for analysis by ion chromatography were. The limit of detection for ion chromatography method was found between 0.005 and 0.1391 mg/L and showed a linearity of 0.999. The results show that the ion chromatography method is more sensitive and faster when compared with the methods traditional, with similar behaviors for the determination of fluoride and sulfate ions, but different in the determination of the chloride and nitrate ions. Key words: Ion chromatography, fluoride, chloride, sulfate, nitrate, comparison of methods

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Zorn, Michael E., Robert D. Gibbons e William C. Sonzogni. "Evaluation of Approximate Methods for Calculating the Limit of Detection and Limit of Quantification". Environmental Science & Technology 33, n. 13 (luglio 1999): 2291–95. http://dx.doi.org/10.1021/es981133b.

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Fitzgerald, Richard. "Nanoelectromechanical system approaches the quantum detection limit". Physics Today 59, n. 11 (novembre 2006): 19–21. http://dx.doi.org/10.1063/1.2435633.

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Anderson, D. J. "Determination of the lower limit of detection." Clinical Chemistry 35, n. 10 (1 ottobre 1989): 2152–53. http://dx.doi.org/10.1093/clinchem/35.10.2152.

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Rudy, J. L. "Differentiating between sensitivity and limit of detection." Clinical Chemistry 35, n. 3 (1 marzo 1989): 509. http://dx.doi.org/10.1093/clinchem/35.3.509.

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30

Yu, Lee L., John D. Fassett e William F. Guthrie. "Detection Limit of Isotope Dilution Mass Spectrometry". Analytical Chemistry 74, n. 15 (agosto 2002): 3887–91. http://dx.doi.org/10.1021/ac011254l.

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31

Lozano, Diego, e Miguel Cantero. "Difference Between Analytical Sensitivity and Detection Limit". American Journal of Clinical Pathology 107, n. 5 (1 maggio 1997): 619.2–619. http://dx.doi.org/10.1093/ajcp/107.5.619a.

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32

Osborn, Kenneth E. "WHY YOU DON'T NEED DETECTION LIMIT STUDIES". Proceedings of the Water Environment Federation 2005, n. 10 (1 gennaio 2005): 5459–64. http://dx.doi.org/10.2175/193864705783856965.

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33

Liu, Benjamin, Seong-Ho Yoo e Seung-Ki Chae. "Lower Detection Limit of Aerosol Particle Counters". Journal of the IEST 38, n. 4 (31 luglio 1995): 31–37. http://dx.doi.org/10.17764/jiet.2.38.4.k87234q1lq4513h4.

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Abstract (sommario):

Aerosol particle counters based on light-scattering have a broad range of applications including cleanroom monitoring, air pollution research, and pharmaceutical studies. Each application may deal with particle materials having various refractive indices. The effect of the particle refractive index on the lower detection limit of aerosol particle counters was investigated using the Mie theory. Counting efficiency measurements were made to verify the theoretical results. Measurements were performed with PSL (polystyrene latex), silicon, silicon nitride, and silicon dioxide particles. Two commercial aerosol counters and a condensation nucleus counter were used in the study. The theoretical study showed that both the real and the imaginary parts of the particle refractive index play an important role in the lower detection limit of an aerosol counter. For transparent particles, as the absolute difference between the particle and medium refractive index increases, the lower detection limit of a counter is decreased. Light-absorbing particles generally showed a smaller lower detection limit than transparent particles. Experimental measurements agree well with the theoretical results. Among the test particles used, silicon had the largest refractive index, followed by silicon nitride, PSL, and silicon dioxide. The lower detection limit of the counters studied showed a decreasing trend with an increasing real part of the refractive index as the particle material is changed from silicon dioxide to PSL, silicon nitride, and silicon. The difference between the theoretically calculated and experimentally determined lower detection limits were found to be less than 10 percent.

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34

Longford, Nicholas T. "Handling the limit of detection by extrapolation". Statistics in Medicine 31, n. 26 (25 aprile 2012): 3133–46. http://dx.doi.org/10.1002/sim.5373.

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35

Zhang, Donghui, Chunpeng Fan, Juan Zhang e Cun-Hui Zhang. "Nonparametric methods for measurements below detection limit". Statistics in Medicine 28, n. 4 (26 novembre 2008): 700–715. http://dx.doi.org/10.1002/sim.3488.

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36

Horikawa, Muneyuki, Hajime Harada e Masaru Yarita. "Detection Limit in Low-amplitude EEG Measurement". Journal of Clinical Neurophysiology 20, n. 1 (febbraio 2003): 45–53. http://dx.doi.org/10.1097/00004691-200302000-00006.

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37

Méray, L., e O. Demény. "Detection Limit and Decision Thresholds in Spectrometry". Applied Spectroscopy 55, n. 8 (agosto 2001): 1102–8. http://dx.doi.org/10.1366/0003702011953036.

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38

Otterson, David, e Tom S. Nobes. "Tech Talk: (9) Lower Limit of Detection". Measurement and Control 48, n. 5 (giugno 2015): 147–48. http://dx.doi.org/10.1177/0020294014553324.

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39

Brown, Lisanne, Nikki L. Rider, David K. Lirette e James H. Diaz. "Response to Detection Limit and Statistical Results". Nicotine & Tobacco Research 16, n. 11 (8 ottobre 2014): 1533. http://dx.doi.org/10.1093/ntr/ntu130.

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40

Rukhin, Andrew L., e Daniel V. Samarov. "Limit of detection determination for censored samples". Chemometrics and Intelligent Laboratory Systems 105, n. 2 (febbraio 2011): 188–94. http://dx.doi.org/10.1016/j.chemolab.2011.01.001.

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41

Lütkenhöner, Bernd, e Annemarie Seither-Preisler. "Auditory Brainstem Response at the Detection Limit". Journal of the Association for Research in Otolaryngology 9, n. 4 (14 agosto 2008): 521–31. http://dx.doi.org/10.1007/s10162-008-0131-1.

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42

Starks, Elizabeth R., Lucas Swanson, T. Roderick Docking, Ian Bosdet, Sarah Munro, Richard A. Moore e Aly Karsan. "Assessing Limit of Detection in Clinical Sequencing". Journal of Molecular Diagnostics 23, n. 4 (aprile 2021): 455–66. http://dx.doi.org/10.1016/j.jmoldx.2020.12.010.

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43

Ramsay, Lauren M., Jane A. Dickerson, Oluwatosin Dada e Norman J. Dovichi. "Femtomolar Concentration Detection Limit and Zeptomole Mass Detection Limit for Protein Separation by Capillary Isoelectric Focusing and Laser-Induced Fluorescence Detection". Analytical Chemistry 81, n. 5 (marzo 2009): 1741–46. http://dx.doi.org/10.1021/ac8025948.

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44

Alfthan, Henrik, Ulla-Maj Björses, Aila Tiitinen e Ulf-Hakan Stenman. "Specificity and Detection Limit of Ten Pregnancy Tests". Scandinavian Journal of Clinical and Laboratory Investigation 53 (1993): 105–13. http://dx.doi.org/10.3109/00365519309086911.

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45

Park, Jong-Yong, Nakwan Kim e Yong-Ku Shin. "Design of Pitch Limit Detection Algorithm for Submarine". Journal of Ocean Engineering and Technology 30, n. 2 (30 aprile 2016): 134–40. http://dx.doi.org/10.5574/ksoe.2016.30.2.134.

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46

Skafte-Pedersen, Peder, Pedro Nunes, Sanshui Xiao e Niels Mortensen. "Material Limitations on the Detection Limit in Refractometry". Sensors 9, n. 11 (26 ottobre 2009): 8382–90. http://dx.doi.org/10.3390/s91108382.

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47

ISHIKAWA, Masaaki, Rieko MATSUDA, Yuzuru HAYASHI, Kumiko SASAKI e Masatake TOYODA. "Comparison of the limit of detection in HPLC." Bunseki kagaku 47, n. 5 (1998): 267–71. http://dx.doi.org/10.2116/bunsekikagaku.47.267.

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48

Montville, D. "Statistical properties of limit of detection test statistics". Talanta 59, n. 3 (1 marzo 2003): 461–76. http://dx.doi.org/10.1016/s0039-9140(02)00574-x.

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49

Reichart, P., G. Dollinger, A. Bergmaier, G. Datzmann, A. Hauptner, H. J. Körner e R. Krücken. "3D hydrogen microscopy with sub-ppm detection limit". Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms 219-220 (giugno 2004): 980–87. http://dx.doi.org/10.1016/j.nimb.2004.01.200.

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50

Horn, Joe, Anthony J. Calise e J. V. R. Prasad. "Flight Envelope Limit Detection and Avoidance for Rotorcraft". Journal of the American Helicopter Society 47, n. 4 (2002): 253. http://dx.doi.org/10.4050/jahs.47.253.

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