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A liquid sampling bottle and liquid sampling method for micro-area X-ray fluorescence spectrometer
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A fluorescence spectrometer and sampling bottle technology, applied in the field of sampling bottle and sampling, can solve the problems of focusing difficulty, liquid level fluctuation, and liquid level inequality, achieve balanced force, expand the application field and scope of application, and solve stable problems. Effects of sex and focus problems
Active Publication Date: 2020-05-26
INSPECTION & QUARANTINE TECH CENT OF NINGBO ENTRY EXIT INSPECTION & QUARANTINE BUREAU
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Problems solved by technology
[0006] There are many problems in the direct measurement of liquid samples by micro-area X-ray fluorescence spectrometer, such as uneven liquid surface caused by liquid surface tension, focusing difficulties caused by too small or too large reflection, liquid level fluctuation caused by protective gas, etc.
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Embodiment 1
[0047] Such as Figure 1-5 As shown, this embodiment utilizes the liquid sampling bottle and the liquid sampling method of the micro-area X-ray fluorescence spectrometer to detect the bath salt solid sample.
[0048] 1. Instruments and measurement conditions
[0049] MIDEX SD focused small-focus X-ray fluorescence spectrometer (Germany Spike Analytical Instruments Co., Ltd.), analysis range Na ~ U, upper irradiation structure, Mo target X-ray tube, maximum power 30W, maximum voltage 48kV, Si drift detector, detection The distance is 2mm.
[0050] 2. Solid sample detection
[0051] Solid sample detection process of X-ray fluorescence spectrometer:
[0052] Step 1: Pre-processing
[0053] After dissolving the bath salt sample with water, record the specific gravity of the sample and water, and let it stand for later use;
[0054] Step 2: Sample loading
[0055]Put the sample liquid processed in step 1 into the liquid sampling bottle, fill the liquid sampling bottle with th...
Embodiment 2
[0062] Such as Figure 1-5 As shown, in this embodiment, the liquid sampling bottle and the liquid sampling method of the micro-area X-ray fluorescence spectrometer are used to detect the content of Pb and As in the water and emulsion samples.
[0063] 1. Instruments and measurement conditions
[0064] MIDEX SD focused small-focus X-ray fluorescence spectrometer (Germany Spike Analytical Instruments Co., Ltd.), analysis range Na ~ U, upper irradiation structure, Mo target X-ray tube, maximum power 30W, maximum voltage 48kV, Si drift detector, detection The distance is 2mm.
[0065] 2. Liquid sample detection
[0066] The liquid sample detection process of the X-ray fluorescence spectrometer in this embodiment:
[0067] step one:
[0068] Check whether there are bubbles or liquid stratification in the sample to be tested, and use an ultrasonic cleaner for defoaming and homogenization;
[0069] Step two:
[0070] Put the sample liquid processed in step one into the liquid ...
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Abstract
The invention discloses a liquid sample feeding bottle used for a microcell X-ray fluorescence spectrometer, which comprises a bottle body and a bottle cover, wherein a circular center hole is formed in the bottle cover; a transparent membrane is sandwiched between the bottom cover and the bottle body of the liquid sample feeding bottle. The invention further discloses a liquid sample feeding method. By adopting the method, a liquid can be directly measured, the problems of stability and focusing of a test sample are solved, batch-processing capabilities are maintained, problems such as liquid surface tension, accurate focusing, batch focusing, helium interference and the like in measurement of the microcell X-ray fluorescence spectrometer are solved, the liquid sample feeding bottle is directly applicable to detection of solid and liquid samples, the microcell X-ray fluorescence spectrometer additionally has the capability of direct liquid (water aqua, emulsions and oil agents) quantitative analysis and the batch processing capability on the basis of the conventional direct solid quantitative analysis capability and the batch processing capability and thus is applicable to detection and analysis on cosmetics or other water solutions, and the application range of the microcell X-ray fluorescence spectrometer is greatly widened.
Description
technical field [0001] The invention relates to a sampling bottle and a sampling method, in particular to a liquid sampling bottle and a liquid sampling method for a micro-area X-ray fluorescence spectrometer. Background technique [0002] Micro-area X-ray fluorescence spectrometer is a special type of product in the field of X-ray fluorescence spectroscopy (XRF). It obtains the element composition and distribution characteristics of small areas of the sample through flexible structure and non-destructive detection. The application range includes environment, archaeology , criminal investigation, materials, industrial quality control, biology and other research fields are currently the hotspots in the field of X-ray spectroscopy in the world. [0003] At present, as far as the application status of X-ray fluorescence spectroscopy is concerned, most of them are concentrated on solid samples. In addition to the direct measurement of oil products in the field of petrochemical ...
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