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    • 4. 发明授权
    • Optical shutter assembly for trace element detector
    • 光学元件检测器的光学快门组件
    • US5953119A
    • 1999-09-14
    • US59133
    • 1998-04-13
    • Arie ZiglerJim GalambosLorrin ReddenMichael Nelson
    • Arie ZiglerJim GalambosLorrin ReddenMichael Nelson
    • G01J3/02G01J3/28
    • G01J3/02G01J3/0202G01J3/0232
    • A shutter assembly for a trace element detector includes a shutter wheel having at least one window, and a drive mechanism coupled to the shutter wheel, wherein the drive mechanism rotates the shutter wheel to move the window between at least an outlet port of the shutter assembly and a cleaning station of the shutter assembly. The cleaning station includes at least one cleaning jet positioned to apply a cleaning solution to the window when the window is located at the cleaning station. In the preferred embodiment, the shutter assembly further includes a drying station, and the drive mechanism rotates the shutter wheel to move the window to the drying station after the window has passed the cleaning station. The drying station includes at least one gas jet positioned to apply a gas stream to the window when the window is located at the drying station. A control mechanism controls the application of the cleaning fluid to the cleaning jet and the application of the gas stream to the gas jet, as either continuous flows or intermittent pulses. The cleaning station and the drying station are preferably isolated by the use of a base plate including a separating wall. The base plate is also provided with drain ports to allow excess cleaning solution to drain from the shutter assembly.
    • 用于微量元件检测器的快门组件包括具有至少一个窗口的快门轮和联接到快门轮的驱动机构,其中驱动机构旋转快门轮以在至少一个开闭器组件的出口端口之间移动窗口 以及快门组件的清洁站。 清洁站包括至少一个清洁喷射器,定位成当窗户位于清洁站时将清洁溶液施加到窗户。 在优选实施例中,闸门组件还包括干燥站,并且驱动机构旋转快门轮以在窗户通过清洁站之后将窗口移动到干燥站。 干燥站包括至少一个气体射流,定位成当窗口位于干燥站时将气流施加到窗户。 控制机构控制清洁流体对清洁射流的应用以及气流到气体射流的应用,作为连续流动或间歇脉冲。 清洁站和干燥站优选通过使用包括分隔壁的基板隔离。 基板还设置有排出端口,以允许多余的清洁溶液从活门组件排出。
    • 8. 发明授权
    • Method and apparatus for in situ detection of minute amounts of trace
elements
    • 用于原位检测微量元素的方法和装置
    • US5379103A
    • 1995-01-03
    • US57475
    • 1993-05-06
    • Arie Zigler
    • Arie Zigler
    • G01N21/71G01N21/00
    • G01N21/718
    • A mobile laboratory for in situ detection of organic and heavy metal pollutants in ground water is disclosed. Pulsed laser energy is delivered via fiber optic media to create a laser spark on a remotely located analysis sample, which is irradiated. In a first operational mode, laser energy emitted from an optical delivery system, e.g., a fiber optic media, is focused, for example by one or more lenses, on the surface of an analysis sample, thus generating a plasma. At high temperatures generated by the laser spark, dissociation occurs, allowing the emitted spectrum to be analyzed for the presence of trace elements, such as heavy metals. Because temperature changes after the end of the laser pulse result in a changing spectral characteristic of the sample, signals emitted from the recombining plasma can be used to identify the contents of the sample. In a second mode, the focusing of the laser energy is removed, so that organic molecules with an aromatic structure emit absorbed ultraviolet energy as fluorescence, which is transmitted via fiber optic media for further analysis. The measured wavelength and time characteristics of the emitted fluorescence can be compared against predetermined characteristics to identify the organic substances in the analysis sample.
    • 公开了一种用于地下水中有机和重金属污染物原位检测的移动实验室。 脉冲激光能量通过光纤介质传送,以在辐射的位于远处的分析样品上产生激光火花。 在第一操作模式中,从光学传送系统(例如光纤介质)发射的激光能量例如通过一个或多个透镜聚焦在分析样品的表面上,从而产生等离子体。 在由激光火花产生的高温下,发生解离,允许分析发射的光谱以存在微量元素,如重金属。 由于激光脉冲结束后的温度变化导致样品的光谱特性变化,所以可以使用从重组等离子体发射的信号来识别样品的内容物。 在第二模式中,消除激光能量的聚焦,使得具有芳族结构的有机分子作为荧光发射吸收的紫外线能量,其通过光纤介质传输以进行进一步分析。 可以将发射的荧光的测量波长和时间特性与预定特性进行比较,以鉴定分析样品中的有机物质。