Lg Chem, Ltd

Lg Energy Solution, Ltd.

Yeu Young Youn

Young Hee Lim

Yongjin Bae

Hye Sung Cho

Hyun Sik You

Kyoungjoo Jin

Byoung Hyoun Kim

Su Youn Han

Dae Hun Kim

Seonyoung Jegal

Yeon Hwa Lee

Ye Hoon Im

Won Jong Kwon

In Young Kim

Kwon Nam Sohn

Byung Hyun Park

Jong Chan Kim

Jun Won Choi

Kil Sun Lee

Rin Jang

Mi Ra Hong

Sooyoung Kwak

Hee Yong Park

Junwon Choi

Bomee Jang

Joo Eun Jung

Daeki Lee

An electrolyte extraction system and a method for extracting electrolyte from a battery using the same are provided. The electrolyte extraction system comprises a first transfer unit transferring a lower jig having an upper surface on which a battery is mounted; a loading unit accommodating the lower jig together with the battery in a freezing tank filled with liquid nitrogen; a cutting unit cutting the battery inside the freezing tank; an unloading unit taking out the lower jig together with the battery from the freezing tank and accommodating the same in an electrolyte extraction tank; and a second transfer unit transferring the electrolyte extraction tank in which the battery is accommodated.

Electrolyte extraction system and method

An on-line system that performs concentration and solvent exchange in order to improve a detection level of analytes by a liquid chromatograph (LC) is provided. The on-line system comprises: a first pump and a second pump for supplying a solvent; a liquid chromatograph (LC) including a separation column (SC) connected to the first pump; a trapping column (TC) for collecting the analytes separated from the separation column; a concentration column (CC) for concentrating the analytes collected in the trapping column (TC); a detector; and first to third switching valves that communicate fluid with at least one of the first or second pumps. An analysis method using the same is also provided.

On-line system for improving detection level of analytes by liquid chromatography and analysis method using same

The present invention relates to an interface unit which can be used in a laser ablation-direct analysis in real time-mass spectrometry (LA-DART-MS) system, and more particularly, provides an interface unit which can be disposed between a DART unit and an MS unit to improve detection sensitivity of a sample laser-ablated by a laser beam.

Interface unit

A method for relative quantitative analysis of a polymer using MALDI mass spectrometry, the method comprising the steps of preparing a plurality of polymer specimens having a thickness variation of 30% or less by electrospraying a solution including a polymer sample, a monomeric internal standard material, and a matrix through a mask for each different concentration of the polymer sample; obtaining MALDI mass spectra by irradiating laser beams to each of the plurality of polymer specimens, and calculating a signal intensity ratio of the polymer sample to the small molecule internal standard from peak results of the spectra; and depicting the calculated signal intensity ratio according to the concentration of the polymer sample to prepare a quantitative calibration curve, and the method capable of providing MALDI mass spectra with reduced overlapping peaks and thereby providing the relative quantitative analysis of a polymer with improved accuracy.

Method for relative quantitative analysis of polymer using MALDI mass spectrometry

A method for analyzing the structure of an insoluble pigment compound is disclosed. In some embodiments, a method comprise determining a molecular weight of the pigment compound, the insoluble pigment compound by ultrasonic treatment in a solvent to form partial structural compounds, analyzing the elemental composition and the structure of partial structural compounds by liquid chromatography/mass spectrometry and nuclear magnetic resonance, respectively and determining the structure of the insoluble pigment compound from the analysis of the partial structural compounds and the molecular weight of the insoluble pigment compound. In some embodiments, a method comprises determining molecular weight of the pigment compound using matrix assisted laser desorption ionization-time of flight mass spectrometry, selecting a parent mass, fragmenting the parent mass and determining the molecular weight of each fragment, and determining the structure of the insoluble pigment compound from the molecular weight of the insoluble pigment compound and that of the fragments.

Method for qualitatively analyzing insoluble pigment compound

The present invention relates to a method for producing test pieces in which the thickness of the samples of homogeneous water-insoluble material is uniform, and to a method for quantitative analysis of water-insoluble material by analyzing such test pieces using MALDI mass spectrometry. Specifically, the test pieces can be produced by: adding a volatile solvent to a mixture of water-insoluble material and matrix; placing, in a pellet cup made of water-soluble material, and pressing, with even pressure, the sample obtained by mixing the mixture of water-insoluble material and matrix until the solvent has evaporated; and melting the pellet cup with water.

Method for producing test pieces of water-insoluble material for MALDI mass spectrometry and method for quantitative analysis of water-insoluble material using MALDI mass spectrometry

A pretreatment method for analyzing dioxin compounds and an analytical method using the same, in which a column packed with polymer beads that are capable of selectively adsorbing dioxin compounds is used in a purification step during pretreatment, thereby remarkably reducing a time required for pretreatment and improving a recovery rate of an internal standard for purification, are provided.

Pretreatment method for analyzing dioxin compounds and analytical method using the same

The present invention provides a solid phase extraction method using a micro device having a dam forming portion including a dam, the solid phase extraction method comprising the steps of: (i) injecting a solvent and a filler into the micro device, moving the solvent to the dam forming portion, the dam allowing the solvent to flow therethrough and preventing the filler from passing therethrough, and adsorbing a material to be separated onto the filler in the dam forming portion; and (ii) extracting, from the filler, the adsorbed material, wherein the micro device is rotated with respect to a central axis during one of steps (i) and (ii), and the rotation of the micro device is performed at an angular velocity defined by equation 1.

Solid phase extraction method using micro device

The present invention provides a method for relative quantitative analysis of a polymer using MALDI mass spectrometry, the method comprising the steps of: (S1) electro-spraying a solution containing a polymer sample and a matrix through a mask to prepare a plurality of polymer specimens with a thickness variation of 30% or less according to the concentration of the polymer sample; (S2) irradiating the respective plurality of polymer specimens with laser to obtain MALDI mass spectra; and (S3) creating a quantitative calibration curve from peak results of the MALDI mass spectra by using a signal of the polymer sample.

The present disclosure relates to a method of manufacturing a specimen of a poorly water-soluble material having a uniform thickness by using a sample plate comprising a substrate and a plurality of protrusions located on one surface of the substrate, the protrusion having a flat surface for receiving a force when pressed from the top, and a method for quantitative analysis of a poorly water-soluble material through MALDI mass spectrometry for the specimen.

Method of preparing specimen of poorly water-soluble material for MALDI mass spectrometry and sample plate used therein

The present invention relates to a micro device for solid phase extraction and more particularly provides a micro device which is configured to perform solid phase extraction by injecting a filler and a solvent and producing a uniform flow of the solvent.

Micro device for solid phase extraction

The present invention provides a method enabling a quantitative analysis of a polymer by MALDI mass spectrometry, and a method for manufacturing a sample for MALDI mass spectrometry for a quantitative analysis of a polymer. To that end, the methods can increase reproducibility of a MALDI spectrum by making uniform the thickness of a sample affecting the pattern in a polymer MALDI spectrum. The sample according to the present invention is applicable also to a commercial MALDI-TOF instrument, and, thus, can quantitatively analyze a polymer in a more efficient and faster manner.

Method for quantitative analysis of polymer using MALDI mass spectrometry, and method for manufacturing sample for MALDI mass spectrometry for quantitative analysis of polymer

The present invention relates to a novel dispersing agent capable of uniformly dispersing a variety of carbon-based materials in different media including aqueous solvents and a preparation method thereof, and a carbon-based material-dispersed composition including the same. The dispersing agent is a mixture of a plurality of polyaromatic hydrocarbon oxides, and the mixture includes polyaromatic hydrocarbon oxide having a molecular weight of 300 to 1000 in an amount of 60% by weight or more.

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Daejeon, South Korea

Yeu Young Youn