rus
Competent opinion
Analysis and control: Technologies, instrumentation, solutions
A.Makarov
Mass spectrometers thermo fisher scientific. Orbitrap – 10 years of progress Orbital ion trap, Orbitrap, considered one of the most modern and advanced mass analyzers in mass spectrometry. The company Thermo Fisher Scientific has released the first instrument to use it only in 2005. The design of mass spectrometers based on Orbitrap continuously improved over the past decade, and their ability to expand. Total was created about fifteen models of spectrometers, belonging to the three main families: LTQ Orbitrap, Q Exactive/Exactive and Orbitrap Fusion. This review is devoted to the consideration of their properties and capabilities.
Mass spectrometers thermo fisher scientific. Orbitrap – 10 years of progress Orbital ion trap, Orbitrap, considered one of the most modern and advanced mass analyzers in mass spectrometry. The company Thermo Fisher Scientific has released the first instrument to use it only in 2005. The design of mass spectrometers based on Orbitrap continuously improved over the past decade, and their ability to expand. Total was created about fifteen models of spectrometers, belonging to the three main families: LTQ Orbitrap, Q Exactive/Exactive and Orbitrap Fusion. This review is devoted to the consideration of their properties and capabilities.
H.Sato
Detailed structural characterization of polymers by MALDI-TOFMS with a spiral ion trajectory Detailed structural characterization of polymers is important because molecular properties of polymers strongly influence the material properties. However, characterization of industrial complicated polymers such as copolymers and polymer blends are difficult by conventional MALDI-TOFMS, because a mass of polymer chains within complex polymeric materials increases the likelihood of isobaric interference, in which the peaks of different chemical compositions with the same nominal mass overlap. Peak separation of isobaric components requires high-resolution mass spectrometry. This report first describes brief features of high-resolution MALDI-TOFMS with a spiral ion trajectory, termed "MALDI spiral-TOFMS", and then some applications of MALDI spiral-TOFMS for a detailed structural characterization of complicated polymers are presented.
Detailed structural characterization of polymers by MALDI-TOFMS with a spiral ion trajectory Detailed structural characterization of polymers is important because molecular properties of polymers strongly influence the material properties. However, characterization of industrial complicated polymers such as copolymers and polymer blends are difficult by conventional MALDI-TOFMS, because a mass of polymer chains within complex polymeric materials increases the likelihood of isobaric interference, in which the peaks of different chemical compositions with the same nominal mass overlap. Peak separation of isobaric components requires high-resolution mass spectrometry. This report first describes brief features of high-resolution MALDI-TOFMS with a spiral ion trajectory, termed "MALDI spiral-TOFMS", and then some applications of MALDI spiral-TOFMS for a detailed structural characterization of complicated polymers are presented.
Tags: complicated polymers maldi spiral-tofms mass spectrometry масс-спектрометрия сложные полимеры спиральный малди-вп-мс
K.Gordeev, S.Zhokhov
The current mass spectrometry: the latest technology and equipment Mass spectrometry (MS) is one of the most informative and is actively developing methods of chemical analysis. Today can not do without the use of MS nor the most advanced research in the field of materials science and life sciences, or routine analyzes: from environmental monitoring and food analysis to medical diagnostics. The world's leading manufacturers showcased analytica 2016 its latest developments in the field of mass spectrometry.
The current mass spectrometry: the latest technology and equipment Mass spectrometry (MS) is one of the most informative and is actively developing methods of chemical analysis. Today can not do without the use of MS nor the most advanced research in the field of materials science and life sciences, or routine analyzes: from environmental monitoring and food analysis to medical diagnostics. The world's leading manufacturers showcased analytica 2016 its latest developments in the field of mass spectrometry.
Tags: chromatography inductively coupled plasma ion mobility spectrometry mass spectrometry индуктивно-связанная плазма масс-спектрометрия спектрометрия ионной подвижности хроматография
A.Amorin, M.Melnik
Analysis of nickel alloys by the Agilent 4210 atomic emission spectrometry with microwave plasma direct analysis of the concentrations of Al, B, Co, Cr, Mo, Ti, V and Zr in the nickel alloy, dissolved in HNO3-HCL-HF, without prior neutralization of hydrof Nickel alloys are used when good high- and low-temperature strength and corrosion resistance are needed. The additive elements in the nickel alloy and their concentrations are carefully selected in order to obtain the desired material properties. A slight change in composition can adversely affect the properties of the alloy. Therefore, accurate elemental analysis of nickel alloys is extremely important from the metallurgical and engineering point of view. In this study, a method to determine the concentrations of Al, B, Co, Cr, Mo, Ti, V and Zr in a nickel alloy using the Agilent 4210 MP-AES, is presented.
Analysis of nickel alloys by the Agilent 4210 atomic emission spectrometry with microwave plasma direct analysis of the concentrations of Al, B, Co, Cr, Mo, Ti, V and Zr in the nickel alloy, dissolved in HNO3-HCL-HF, without prior neutralization of hydrof Nickel alloys are used when good high- and low-temperature strength and corrosion resistance are needed. The additive elements in the nickel alloy and their concentrations are carefully selected in order to obtain the desired material properties. A slight change in composition can adversely affect the properties of the alloy. Therefore, accurate elemental analysis of nickel alloys is extremely important from the metallurgical and engineering point of view. In this study, a method to determine the concentrations of Al, B, Co, Cr, Mo, Ti, V and Zr in a nickel alloy using the Agilent 4210 MP-AES, is presented.
Tags: analysis detection limits dynamic range nickel alloy nitrogen plasma азотная плазма анализ динамический диапазон никелевый сплав предел обнаружения
Экономика и бизнес
Information technology
V.Kulagin, A.Ivanov, A.Gazin, B.Akhmetov
Cyclic-continuum quantum computing: power amplification chi-squared test on small samples The article shows that the output of the chi-squared test on small samples can not be regarded as continuous. These data are discrete in nature (have a finite number of states). The latter allows you to switch from using classical statistical tests continuum hypothesis testing to analyze the discrete version of the chi-square test. Examples of discrete spectra of the chi-square test for the proper and uniform value distribution laws. We evaluated the growth of power discrete chi-square-test relative to its continuous version. There fractal (granularity) of the degree of freedom chi-squared test on small samples. We estimate the number of cycles of continuous-quantum computer, amplifying power chi-square test of Pearson.
Cyclic-continuum quantum computing: power amplification chi-squared test on small samples The article shows that the output of the chi-squared test on small samples can not be regarded as continuous. These data are discrete in nature (have a finite number of states). The latter allows you to switch from using classical statistical tests continuum hypothesis testing to analyze the discrete version of the chi-square test. Examples of discrete spectra of the chi-square test for the proper and uniform value distribution laws. We evaluated the growth of power discrete chi-square-test relative to its continuous version. There fractal (granularity) of the degree of freedom chi-squared test on small samples. We estimate the number of cycles of continuous-quantum computer, amplifying power chi-square test of Pearson.
Tags: power amplification chi-square test quantum computing spectral analysis statistical hypothesis testing квантовые вычисления спектральный анализ статистическая проверка гипотез усиление мощности критерия хи-квадрат
Historic chapters
A.Kessenikh
As we have in the USSR to conquer NMR. Development of analytical techniques of NMR in the USSR and Russia. Part 3. The third part of the historical review on development of analytical methods of a NMR in the USSR and Russia in second half of 20th centurie deals with the problems associated with an increase in sensitivity and resolution NMR spectrometers. Russian scientists individual specimens and small series of NMR spectrometers, quite successfully used for a long time have been created. The author analyzes the causes of the failure, ways of development of domestic NMR instrumentation and the introduction in the USSR spectrometers of foreign production.
As we have in the USSR to conquer NMR. Development of analytical techniques of NMR in the USSR and Russia. Part 3. The third part of the historical review on development of analytical methods of a NMR in the USSR and Russia in second half of 20th centurie deals with the problems associated with an increase in sensitivity and resolution NMR spectrometers. Russian scientists individual specimens and small series of NMR spectrometers, quite successfully used for a long time have been created. The author analyzes the causes of the failure, ways of development of domestic NMR instrumentation and the introduction in the USSR spectrometers of foreign production.