摘要:
A separation analyzer for transferring solutions, while changing mixing ratios of the solutions, wherein a flow passage from a first pump, a flow passage from a second pump, and a passage for sample introduction section, the flow passages being connected, which further comprises a flow switching means for temporarily storing the solutions, whereby the flow switching means alternatively makes a first state for pushing out the solutions in a second sampling loop to the sample introduction section by the second pump, while transferring the solutions to the first sampling loop; and a second state for pushing out the solutions in the first sampling loop by the second pump, while transferring the solutions from the first pump to the second sampling loop.
摘要:
A separation analyzer for transferring solutions, while changing mixing ratios of the solutions, wherein a flow passage from a first pump, a flow passage from a second pump, and a passage for sample introduction section, the flow passages being connected, which further comprises a flow switching means for temporarily storing the solutions, whereby the flow switching means alternatively makes a first state for pushing out the solutions in a second sampling loop to the sample introduction section by the second pump, while transferring the solutions to the first sampling loop; and a second state for pushing out the solutions in the first sampling loop by the second pump, while transferring the solutions from the first pump to the second sampling loop.
摘要:
A separation analyzer for transferring solutions, while changing mixing ratios of the solutions, wherein a flow passage from a first pump, a flow passage from a second pump, and a passage for sample introduction section, the flow passages being connected, which further comprises a flow switching means for temporarily storing the solutions, whereby the flow switching means alternatively makes a first state for pushing out the solutions in a second sampling loop to the sample introduction section by the second pump, while transferring the solutions to the first sampling loop; and a second state for pushing out the solutions in the first sampling loop by the second pump, while transferring the solutions from the first pump to the second sampling loop.
摘要:
A separation analyzer for transferring solutions, while changing mixing ratios of the solutions, wherein a flow passage from a first pump, a flow passage from a second pump, and a passage for sample introduction section, the flow passages being connected, which further comprises a flow switching means for temporarily storing the solutions, whereby the flow switching means alternatively makes a first state for pushing out the solutions in a second sampling loop to the sample introduction section by the second pump, while transferring the solutions to the first sampling loop; and a second state for pushing out the solutions in the first sampling loop by the second pump, while transferring the solutions from the first pump to the second sampling loop.
摘要:
A separation analyzer for transferring solutions, while changing mixing ratios of the solutions, wherein a flow passage from a first pump, a flow passage from a second pump, and a passage for sample introduction section, the flow passages being connected, which further comprises a flow switching means for temporarily storing the solutions, whereby the flow switching means alternatively makes a first state for pushing out the solutions in a second sampling loop to the sample introduction section by the second pump, while transferring the solutions to the first sampling loop; and a second state for pushing out the solutions in the first sampling loop by the second pump, while transferring the solutions from the first pump to the second sampling loop.
摘要:
Both a column having high-pressure resistance and capable of performing high-speed separation and analysis even with a small flow rate and a liquid chromatograph apparatus using the column are provided. A separation column according to the present invention has a monolithic rod being arranged in the center, being made of a porous material, and having a circular cross section, a filler layer arranged such that it encircles a circumferential surface of the monolithic rod, and a cylindrical support medium arranged outside the filler layer. The filler layer is formed by filling a tube-like gap between the monolithic rod and the support medium with particles or beads.
摘要:
In a liquid chromatograph, the disulfide adsorption of iron atoms in a filter for a column is avoided and thus peak tailing in a chromatogram is prevented to thereby prevent a lowering in the sample recovery rate. A liquid chromatograph column comprising a hollow tubular column body, a bead-shaped packing material which is packed in the hollow part of the column body, a filter provided with a mesh which has a mesh size smaller than the particle diameter of the packing material, and a cap which presses the filter against the packing material to thereby enclose the packing material within the column body, characterized in that the main component of the filter is nickel or hastelloy.
摘要:
In a liquid chromatography apparatus, a separation column of intermediate stage is additionally connected between a separation column of first stage and a separation column of second stage. Preferably, a switching unit and a liquid feed unit for mixing and feeding a plurality of solutions are added to improve a separation capability. A three-dimensional liquid chromatography apparatus capable of avoiding the “solution interference” can be realized. Even a complex sample containing a hydrophilic component and a hydrophobic component in a mixed state can be separated and analyzed satisfactorily on-line.
摘要:
A method for analyzing a multi-channel chromatogram is realized for accurately resolving overlapping peaks on a multi-channel chromatogram to permit analysis of the composition of a sample. First, components of overlapping peaks are specified. A data matrix Dij is determined, and compressed in the wavelength direction to obtain a data matrix vector Di. Next, the two-dimensional data is deconvoluted, final standard deviation s0 is registered, and the deconvoluted two-dimensional data is reconvoluted to a retention intensity matrix. A quantitative spectral intensity matrix is computed, components are identified, and the identified components are quantified. Subsequently, an eigenvalue problem is solved, and the number n of components is estimated. The deconvolution and computation of the eigenvalue problem are iteratively executed until the peaks are isolated. Then, elution profiles are calculated, the components are identified, and the identified components are quantified.
摘要:
A method for analyzing a multichannel chromatogram is realized for accurately resolving overlapping peaks on a multichannel chromatogram to permit analysis of the composition of a sample. First, components of overlapping peaks are specified. A data matrix Dij is determined, and compressed in the wavelength direction to obtain a data matrix vector Di. By compressing three-dimensional data in the wavelength direction, noise components cancel with each other to obtain noise free two-dimensional data Di&bgr;. Next, the two-dimensional data is deconvoluted, final standard deviation s0 is registered, and the deconvoluted two-dimensional data is reconvoluted to a retention intensity matrix. A quantitative spectral intensity matrix is computed, components are identified, and the identified components are quantified. The quantified data is displayed on a screen. Since noise components cancel with each other, it is possible to realize an analyzing method which is capable of accurately resolving and analyzing the components. Also, overlapping peaks are specified, and a data matrix D is determined. Subsequently, an eigenvalue problem is solved, and the number n of components is estimated. The deconvolution and computation of the eigenvalue problem are iteratively executed until the peaks are isolated. Then, elution profiles are calculated, the components are identified, and the identified components are quantified.