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Liquid sample feeding bottle and liquid sample feeding method used for microcell 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 problems such as liquid level fluctuation, uneven liquid level, and difficulty in focusing, achieve balanced force, expand application field and scope of application, and solve stable problems. Effects of sex and focus problems
Active Publication Date: 2017-11-24
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] like 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 solid sample of bath salt.
[0048] 1. Instrument and measurement conditions
[0049] MIDEX SD type focusing small focus X-ray fluorescence spectrometer (Germany Speck 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 2mm distance.
[0051] Solid sample detection process of X-ray fluorescence spectrometer:
[0052] Step 1: Preprocessing
[0053] After dissolving the bath salt sample in water, record the specific gravity of the sample and water, and let it stand for later use;
[0054] Step 2: Load the sample
[0055]The sample liquid processed in step 1 is loaded into the liquid injection bottle, the sample liquid is filled with t...
Embodiment 2
[0062] like 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. Instrument and measurement conditions
[0064] MIDEX SD type focusing small focus X-ray fluorescence spectrometer (Germany Speck 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 2mm distance.
[0065] 2. Liquid sample detection
[0066] The liquid sample detection process of the X-ray fluorescence spectrometer of the present embodiment:
[0067] step one:
[0068] Check whether the sample to be tested has bubbles or liquid stratification, and use an ultrasonic cleaner for defoaming and homogenization;
[0069] Step 2:
[0070] The sample liquid processed in step 1 is put into the liquid sampling b...
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Abstract
The invention discloses a liquid sample feeding bottle used for a microcell X-rayfluorescencespectrometer, 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-rayfluorescencespectrometer are solved, the liquid sample feeding bottle is directly applicable to detection of solid and liquid samples, the microcell X-rayfluorescencespectrometer 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 kind of product in the field of X-ray fluorescence spectroscopy (XRF) analysis. It obtains the element composition and distribution characteristics of small areas of the sample through flexible structure and non-destructive testing. The application range includes environmental, archaeological , 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, in terms of the application status of X-ray fluorescence spectroscopy, most of them are concentrated on solid samples. In addition to the direct measurement of oil products in the petrochemical field, t...
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