公开(公告)号：US20040211906A1

公开(公告)日：2004-10-28

申请号：US10847161

申请日：2004-05-17

Applicant: INNOVATIONSAGENTUR GESELLSCHAFT M.B.H.

Inventor： Bernhard Lendl

IPC: G01N021/35

CPC classification number: G01N21/39 ,  G01N21/3577

Abstract: A method of infrared-optically determining the concentration of at least one analyte in a liquid sample, wherein the infrared absorption of the analyte(s) is measured and compared with a standard, which is characterized in that the liquid sample is sampled with an infrared radiation of high light density, wherein the infrared radiation has a sharp intensity peak at at least one wave length, as well as an arrangement for the infrared-optical transmission determination of the concentration of at least one analyte in a liquid sample, with a sample cuvette flowed through by the sample liquid, the sample cuvette being arranged in the radiation path between a radiation source for providing the infrared radiation and a detector for measuring the infrared absorption induced by the analyte in the sample cuvette.

Abstract translation: 一种红外光学测定液体样品中至少一种分析物的浓度的方法，其中测量分析物的红外吸收并与标准物进行比较，其标准物的特征在于，液体样品用红外 高光密度的辐射，其中红外辐射在至少一个波长处具有尖锐的强度峰值，以及用于红外光学透射测定液体样品中至少一种分析物的浓度的装置，其中样品 样品池通过样品液体流过，样品比色皿被布置在用于提供红外辐射的辐射源之间的辐射路径中，以及用于测量由样品比色皿中的分析物引起的红外吸收的检测器。

公开(公告)号：US20040164247A1

公开(公告)日：2004-08-26

申请号：US10769997

申请日：2004-02-02

Inventor： Claus Riehle ,  Marcus Brand ,  Frank Hilgers ,  Klaus Jager ,  Rainer Giesen ,  Heinz-Josef Hamacher ,  Udo Wolf

IPC: G01N021/35

CPC classification number: C07B43/02

Abstract: A process for monitoring and/or controlling a nitrating process, having the following steps: measuring inline infrared spectra of nitric acid content in a reaction mixture stream downstream of the nitration reaction, preferably near-infrared spectra, evaluating the measured spectra by means of a computer-assisted, matrix-specific calibration model for the purpose of determining the content of nitric acid, transmitting the results of spectrometric examination to a process control system, inputting the results of spectrometric examination for the purpose of specifying the content of nitric acid in the acid phase into a regulator (224) for control of the metering (207, 217) of nitric acid into a nitrating reactor.

Abstract translation: 一种用于监测和/或控制硝化过程的方法，具有以下步骤：测量在硝化反应下游的反应混合物流中的硝酸含量的在线红外光谱，优选近红外光谱，借助于 计算机辅助的基质特异性校准模型，用于确定硝酸含量，将光谱检测结果传输到过程控制系统，输入光谱检测结果，以确定硝酸的含量 酸相进入调节器（224），用于将硝酸的计量（207,217）控制到硝化反应器中。

公开(公告)号：US20040099806A1

公开(公告)日：2004-05-27

申请号：US10304627

申请日：2002-11-26

Inventor： Paul H. Shelley ,  Diane R. LaRiviere

IPC: G01N021/35

CPC classification number: G01N21/552 ,  G01N21/314 ,  G01N21/3563 ,  G01N21/8422

Abstract: Amount of coating cure or contamination is determined. An infrared beam is transmitted into a crystal. The beam reflects off an internal face at an angle higher than critical reflection angle to generate total reflection at the crystal face. The beam exits the crystal, is filtered at two wavelengths, and is detected to give values Io1 and Io2 of infrared energy reflected without coating. A coated sample contacts an outside face of the crystal. An evanescent wave penetrates the sample where the beam reflects from internal crystal face. The beam is partially absorbed by sample, exits the crystal, is filtered at two wavelengths, and is detected to give values Ic1 and Ic2 of infrared energy reflected with coating. Absorbance values A1 and A2 at two wavelengths are A1nullnulllog10(Ic1/Io1) and A2nullnulllog10(Ic2/Io2). Amount of cure or contamination is proportional to ratio or difference between A1 and A2.

Abstract translation: 确定涂层固化或污染的量。 红外光束被传输到晶体中。 光束以高于临界反射角的角度反射出内表面，以在晶面产生全反射。 光束离开晶体，在两个波长处被过滤，并且被检测得到反射而不涂覆的红外能量的值Io1和Io2。 涂覆的样品接触晶体的外表面。 ev逝波穿透光束从内部晶面反射的样品。 光束被样品部分吸收，离开晶体，在两个波长处被过滤，并被检测到给出涂层反射的红外能量值Ic1和Ic2。 两个波长的吸光度值A1和A2分别为A1 = -log10（Ic1 / Io1），A2 = -log10（Ic2 / Io2）。 固化或污染的量与A1和A2之间的比例或差异成比例。

公开(公告)号：US20040065829A1

公开(公告)日：2004-04-08

申请号：US10264080

申请日：2002-10-03

Inventor： Gary Neil Burk ,  Thomas Michael Domin ,  Rodney Dale Maxson ,  Dennis Charles Daugherty ,  Steven Perry Sturm

IPC: G01N021/35

CPC classification number: G01N21/86 ,  G01N21/3563 ,  G01N33/346 ,  G01N2021/8917 ,  G02B26/04

Abstract: A single vane shutter flag is asynchronously controlled so that a measuring system light source is interrupted for a minimum necessary amount of time for standardization/calibration and normalization of InGaAs system detectors. Source/detector hemispheres or serially connected randomly oriented fiber bundles homogenize light passing to the detectors. Light source testing is performed by measuring spectral power distributions at a plurality of light source power levels and comparing the measurements to baseline characteristics established for the light source. Calibration sample life is extended indefinitely by controlling the shutter flag to block source light except for short calibration time periods during which standard light levels are provided.

Abstract translation: 单个叶片快门标志被异步地控制，使得测量系统光源在InGaAs系统检测器的标准化/校准和归一化所需的最短时间内被中断。 源/检测器半球或串联连接的随机取向纤维束均匀化通过检测器的光。 通过测量多个光源功率电平上的光谱功率分布并将测量值与为光源建立的基线特性进行比较来执行光源测试。 通过控制快门标志来阻止源光，校准采样寿命无限期，除了提供标准光级的短校准时间段外。

公开(公告)号：US20040056197A1

公开(公告)日：2004-03-25

申请号：US10251318

申请日：2002-09-19

Inventor： James R. Davidson ,  Judy K. Partin

IPC: G01N021/35

CPC classification number: G01N21/359 ,  G01N21/3577

Abstract: An optical measurement system is presented that offers precision on-line monitoring of the quality of steam. Multiple wavelengths of radiant energy are passed through the steam from an emitter to a detector. By comparing the amount of radiant energy absorbed by the flow of steam for each wavelength, a highly accurate measurement of the steam quality can be determined on a continuous basis in real-time. In an embodiment of the present invention, the emitter, comprises three separate radiant energy sources for transmitting specific wavelengths of radiant energy through the steam. In a further embodiment, the wavelengths of radiant energy are combined into a single beam of radiant energy for transmission through the steam using time or wavelength division multiplexing. In yet a further embodiment, the single beam of radiant energy is transmitted using specialized optical elements.

Abstract translation: 提供了一种提供精度在线监测蒸汽质量的光学测量系统。 多个波长的辐射能量通过蒸汽从发射器传递到检测器。 通过比较每个波长的蒸汽流吸收的辐射能量，可以实时地连续地确定蒸汽质量的高精度测量。 在本发明的一个实施例中，发射器包括三个独立的辐射能源，用于通过蒸汽传输特定波长的辐射能。 在另一个实施例中，辐射能的波长被组合成单个辐射能量束，以便通过使用时间或波分复用的蒸汽传输。 在另一个实施例中，使用专门的光学元件传输单个辐射能量束。

公开(公告)号：US20040021077A1

公开(公告)日：2004-02-05

申请号：US10392016

申请日：2003-03-19

Inventor： Jack Ambuel

IPC: G01N021/35

CPC classification number: G01N21/359 ,  G01N21/3563

Abstract: The present invention relates to an instrument for measuring in relatively short periods of time concentrations of constituents in optically dense materials using the spectra near infrared radiation transmitted through thick samples of the material while the material is either stationary or flowing. The invention uses a broadband incandescent intensity stabilized light source combined with collimating optics to transmit a parallel beam of light through the material under test. The light transmitted through the material is then collected by a focusing lens and imaged onto a rectangular entrance slit of a special purpose spectrometer. This spectrometer has no moving parts and employs a fixed diffraction grating to physically spread the image of the entrance slit into a continuous range of wavelengths. A portion of the diffracted slit images covering the selected portion of the near infrared range is focused onto an array of individual rectangular photodiodes. By using relatively large area photodiodes and a relatively small number of photodiodes, high sensitivity is achieved and low intensity radiation levels can be measured quickly. By using a relatively narrow spectral range, medium resolution can be achieved. The outputs of each photodiode, or the outputs of a selected number of the photodiodes, are fed into current to voltage converters: either resistive (instantaneous) or preferred capacitive (integrating). Thus the outputs of all photodiodes are measured in parallel, which reduces the time to acquire the spectra. The gain of these current to voltage converters is programmable so that both high intensity and low intensity near infrared radiation levels can be measured without reducing the intensity of the radiation incident on the material under test and thereby eliminating the need for moving parts in the spectrometer. After the spectra are acquired, they are operated on by models developed to predict the percentages of various constituents in the material. These models are pre-calibrated using spectra obtained from materials of known concentrations and developed using chemometric, neural net, and/or genetic algorithms.

公开(公告)号：US20030213911A1

公开(公告)日：2003-11-20

申请号：US10425909

申请日：2003-04-29

Inventor： John William Fulmer ,  Andrey Vladimirovich Zinenkov ,  Arkady Samuilovich Dyckman ,  Randall Todd Bishop

IPC: G01N021/35

CPC classification number: G01N21/274 ,  C07C37/08 ,  G01N21/3577 ,  G01N21/359 ,  G01N21/79 ,  G01N21/8507 ,  C07C39/04

Abstract: A method for measuring a concentration of a hydroperoxide of an alkylaromatic hydrocarbon in a process stream comprises immersing a probe into the process stream; wherein the probe is coupled to a spectrometer; collecting absorption data with the spectrometer at a wavelength of 13,000 cmnull1 to 4,000 cmnull1; and calculating a concentration of the hydroperoxide of the alkylaromatic hydrocarbon in the process stream. In another embodiment, samples are withdrawn from the process stream and analyzed spectrometrically to determine the concentration of the hydroperoxide of the alkylaromatic hydrocarbon in the sample.

Abstract translation: 用于测量工艺流中烷基芳烃的氢过氧化物浓度的方法包括将探针浸入工艺流中; 其中所述探针耦合到光谱仪; 用分光计在13000cm -1至4000cm -1的波长处收集吸收数据; 并计算工艺流中烷基芳烃的氢过氧化物浓度。 在另一个实施方案中，将样品从工艺流中取出并进行光谱测定，以确定样品中烷基芳族烃的氢过氧化物的浓度。

公开(公告)号：US20030178569A1

公开(公告)日：2003-09-25

申请号：US10319409

申请日：2002-12-12

Inventor： Bernhard B. Sterling ,  James R. Braig ,  Daniel S. Goldberger ,  Philip C. Hartstein ,  Robert D. Gaffney

IPC: G01N021/35

CPC classification number: A61B5/1455 ,  A61B5/14532 ,  A61B5/14546 ,  A61B2562/0295 ,  G01N21/274 ,  G01N21/314 ,  G01N21/35 ,  G01N27/3271

Abstract: A method uses spectroscopy to determine an analyte concentration in a sample. The method includes producing an absorbance spectrum of the sample. The method further includes shifting the absorbance spectrum to zero in a wavelength region. The method further includes subtracting a water or other substance contribution from the absorbance spectrum.

Abstract translation: 一种方法使用光谱学来确定样品中的分析物浓度。 该方法包括产生样品的吸收光谱。 该方法还包括在波长区域中将吸收光谱移动到零。 该方法还包括从吸收光谱中减去水或其它物质的贡献。

公开(公告)号：US20030094573A1

公开(公告)日：2003-05-22

申请号：US10299848

申请日：2002-11-20

Inventor： Yaomin Lin ,  Hau-Wei Wang ,  Ying-Cheun Spring Yeh

IPC: G01N021/35 ,  G01N021/64 ,  G01N021/65

CPC classification number: G01J3/44 ,  G01J3/42 ,  G01J3/4406 ,  G01N21/35 ,  G01N21/64 ,  G01N21/65

Abstract: A spectrum measuring apparatus for measuring infrared, Raman and fluorescence spectra. The spectrum measuring apparatus includes an infrared source, a laser source, an infrared up-conversion object lens, an object lens, a dual color lens, an ocular, a narrow band filter, a visible light image capturing device and a sample pedestal. The infrared spectrum is measured by the infrared up-conversion object lens. The Raman and fluorescence spectra are measured by the object lens.

Abstract translation: 用于测量红外，拉曼和荧光光谱的光谱测量装置。 光谱测量装置包括红外源，激光源，红外上变换物镜，物镜，双色透镜，眼睛，窄带滤光器，可见光图像捕获装置和样品台。 红外光谱由红外上变换物镜测量。 通过物镜测量拉曼和荧光光谱。

公开(公告)号：US20030057374A1

公开(公告)日：2003-03-27

申请号：US10197426

申请日：2002-07-18

Applicant: Bruker Optik GmbH

Inventor： Reiner Schuebel ,  Arno Simon ,  Michael Juette

IPC: G01N021/35

CPC classification number: G01N21/35 ,  G01J3/453 ,  G01N2021/3595

Abstract: A switchable infrared radiation method and device provides for optical analysis of a sample using a Fourier transform spectrometer for illumination thereof. A housing accommodates an optical delineation means mounted therein which transmits infrared radiation following interaction with the sample. The radiation is passed through an optical switch mounted in the housing having a first switching position and a second switching position for reflecting infrared radiation transmitted by the optical delineation means. A single element detector is mounted in the housing for detecting infrared radiation transmitted by the optical switch in its first switching position. An array detector is also mounted in the housing to accept radiation from the optical switch in the second switching position. The array detector comprises a plurality of pixel-like infrared sensors for two-dimensional detection of the radiation. A signal analyzer communicates with both the single element detector and the array detector for analyzing single element detector signals as well as for analyzing array detector signals. The analysis system of the invention incorporates the advantages of both the single element detector system as well those of the array detector system, in a single device, thereby allowing the user to avoid the disadvantages of both systems. In this manner samples can be examined in a minimum amount of time with a desirable degree of spectral sensitivity and spatial precision.

Abstract translation: 可切换的红外辐射方法和装置提供使用傅里叶变换光谱仪对样品进行光学分析以进行照明。 壳体容纳安装在其中的光学描绘装置，其在与样品相互作用之后透射红外辐射。 辐射通过安装在壳体中的光学开关，其具有用于反射由光学描绘装置传输的红外辐射的第一切换位置和第二切换位置。 单元检测器安装在壳体中，用于检测由光开关在其第一切换位置中传输的红外辐射。 阵列检测器也安装在壳体中以在第二切换位置接收来自光开关的辐射。 阵列检测器包括用于辐射的二维检测的多个像素状红外传感器。 信号分析仪与单个元件检测器和阵列检测器通信，用于分析单个元件检测器信号以及用于分析阵列检测器信号。 本发明的分析系统在单个装置中结合了单个元件检测器系统以及阵列检测器系统的优点，从而允许用户避免两个系统的缺点。 以这种方式，可以在最小量的时间内以期望的光谱灵敏度和空间精度来检查样品。