A spectroscopic analysis device includes a detector and a processor. The detector detects measurement light obtained by irradiating, with irradiation light, a sample that contains a contained substance disposed on a film on which surface plasmons are generated. The measurement light includes information on an optical spectrum of the sample, and the information includes a resonance spectrum of the surface plasmons and an absorption spectrum of the sample. The processor calculates: a peak wavelength in a wavelength band in which the resonance spectrum and the absorption spectrum are generated; a peak absorbance of the contained substance based on an absorption band of the contained substance; and a ratio of the contained substance to the sample based on the peak wavelength and the peak absorbance.

A method includes determining whether a variation in probe radiation intensity meets a stability criterion; directing the probe radiation through a probe, when the probe is disposed at a first position, defining a first path length L.sub.1 of the probe radiation through the fluid sample; measuring a transmitted intensity I.sub.1 of the probe radiation after passing through the fluid sample when the probe is disposed at the first position; directing the probe radiation through the probe when the probe is disposed at a second position, defining a second path length L.sub.2 of the probe radiation through the fluid sample; measuring a transmitted intensity I.sub.2 of the probe radiation after passing through the fluid sample when the probe is disposed at the second position; and determining a concentration C of a material in the fluid sample based upon L.sub.1, I.sub.1, L.sub.2, and I.sub.2, when the stability criterion is met.

This disclosure relates to methods of characterizing a urine sample from a subject.

Systems for protein quantitation using a Fabry-Perot interferometer. In one arrangement, a quantitation device includes an infrared source, a sample holder, and a Fabry-Perot interferometer positioned to receive infrared radiation from the source passing through a sample on the sample holder. A band pass optical filter sets the working range of the interferometer, and radiation exiting the interferometer falls on a detector that produces a signal indicating the intensity of the received radiation. A controller causes the interferometer to be tuned to a number of different resonance wavelengths and receives the intensity signals, for determination of an absorbance spectrum.

A quality inspection method for a chemical liquid used for manufacturing a semiconductor substrate includes: a step W of preparing a first container and washing at least a portion of a liquid contact portion by using a portion of the chemical liquid, a step A of performing concentration of a portion of the chemical liquid by using the washed first container so as to obtain c liquid, a step B of performing measurement of a content of a specific component in c liquid, and a step C of comparing the content of the specific component with a preset standard value. At least the step W and the step A are performed in a clean room having cleanliness equal to or higher than class 4 specified in ISO14644-1:2015, the concentration is performed in inert gas or under reduced pressure, and the measurement is performed by a predetermined measurement method.

A gas detection system includes a sensor unit that outputs a signal corresponding to a concentration of a specific gas, a concentration unit having therein an adsorbent that adsorbs a gas to be detected, a supply unit capable of supplying a sample gas and a purge gas to the concentration unit, a heater capable of heating the adsorbent, and a control unit. The control unit controls the supply unit so that the sample gas passes through the concentration unit, and then controls the supply unit so that the purge gas passes through the concentration unit while controlling the heater so that a temperature of the adsorbent increases.

A light emitting apparatus has a plurality of light emitting units, and each of them emits a light with a light emission peak wavelength and a wavelength range. The wavelength ranges of the two light emitting units with the two adjacent light emission peak wavelengths are partially overlapped or non-overlapped. Each of the light emitting units discontinuously emits a light with a lighting frequency. The present disclosure further provides the spectrometer, a light emitting method and a spectrum detection method, and all of them utilizes the light emitting apparatus, a background noise is discarded and a frequency domain signal of an optical spectrum signal of a tested object is reserved, so as to have a filtering effect and achieve high test accuracy, which can replace conventional spectrometer for wavelength resolution characteristics.

Method for detecting colon or colorectal cancer by measuring heavy metal concentrations in colon or colorectal tissue using laser-induced breakdown spectroscopy (LIBS).

A nebulizer having a gas capillary and a liquid capillary that are aligned in the same direction within a nebulizer housing is disclosed. The nebulizer includes a nebulizer tip that is substantially parallel to a cross-section of the liquid capillary and to a cross-section of the gas capillary. The tip includes a liquid opening and a gas orifice. The gas capillary may have a non-tapered body and a tapered end. The tip has a roughened surface that allows wetting of the tip with liquid that exits from the liquid opening to form a thin film. The nebulizer may be formed from glass, quartz, one or more polymers, metals, or alloys, or a combination thereof. The nebulizer is capable of handling high solid content samples, and it also offers precision and sensitivity comparable to concentric nebulizers. Methods of introducing a sample into an instrument using the disclosed nebulizer are also disclosed.

The present disclosure relates to spectroscopy with light emitting components including, e.g., UV and/or visible wavelength light, for various applications, including, e.g., chromatography, and more particularly, for a sampling device that facilitates spectroscopic measurements with a variable pathlength and methods for such a device. In an aspect, a device for measuring light absorbance of a sample may include a fluid conduit comprising a first portion, a midportion substantially perpendicular to the first portion, and a second portion substantially perpendicular to the midportion. A first probe may be within the midportion and substantially parallel with the midportion. The first probe may comprise a distal end. A light source may be operably coupled to the first probe. A detector may be aligned with the distal end of the first probe substantially perpendicular to the first probe at a pathlength from the distal end of the first probe.