An automatic sample ashing pretreatment device
An ashing and sample technology, applied in the field of automatic sample pre-processing devices, can solve the problems of large manual operation error in pre-processing, slow sample pre-processing speed, and difficult to control accuracy, so as to avoid the loss of volatile elements, avoid errors, The effect of improving the recovery rate
Active Publication Date: 2016-02-10
西安西北有色地质研究院有限公司
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[0005] In order to overcome the shortcomings of the existing sample pretreatment process such as large manual operation errors, element volatilization loss, slow sample pretreatment speed, pretreatment precision and accuracy, etc., the present invention provides a Automatic sample ashing pretreatment device for elemental analysis
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[0038] 1) The sample tube is composed of a separable inner tube and an outer tube, and a quartz sand core sample disc is arranged in the inner tube. Weigh 0.2-0.5 g of the organic matter sample, and evenly spread it on the quartz sand core sample disk of the inner tube of the quartz sample. Insert the inner sample tube into the outer sample tube and put it into the sample holder H. Place the sample rack H in the rack B of the equipment to be processed. Open the oxygen valve, exhaust, and connect the power supply.
[0039] 2) Press the device start switch, input parameters, the air gripper A3 automatically grabs the sample rack H and places it in the sample ashing mechanism C, and then moves the ozone generation air inlet needle mechanism G to the top of the sample tube and inserts it into the sample inner tube , by pressing down the cylinder A5 to automatically apply pressure to the ozone generating inlet needle mechanism G for sealing. Next, the cooling and trapping device...
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The invention relates to an automatic sample ashing pretreatment device which comprises a bottom plate, wherein a sample conveying mechanism is arranged behind the bottom plate; a to-be-treated sample stand bracket, a sample ashing mechanism, an ultrasonic dissolving and washing mechanism, a multi-position feeding needle mechanism, a multi-way injection pump mechanism and a treated sample stand bracket are sequentially arranged before the sample conveying mechanism on the bottom; an ozone generation inlet needle mechanism is arranged at the upper part of the ultrasonic dissolving and washing mechanism; a sample stand is arranged on the to-be-treated sample stand bracket. By adopting the automatic sample ashing pretreatment device, a sample can be subjected to rapid low-temperature ozone ashing, volatile elements can be automatically cooled and captured, and under the action of ultrasonic waves, automatic sizing, dissolution and homogenization can be completed simultaneously, and full-automatic high-efficiency rapid pretreatment on a sample is achieved. In the ashing pretreatment process, the time for ashing is shortened to 20-60 minutes, the volatile elements are prevented from being lost, and the recycling rate is increased to be greater than 90%. The sample ashing process is automatically completed, and the precision is ensured. Unattended operation is achieved, and the working efficiency is greatly improved.
Description
technical field [0001] The invention relates to an automatic sample pretreatment device for analyzing inorganic heavy metal elements in organic matter samples. The special equipment involves a rapid low-temperature ozone ashing of samples, automatic cooling and capture of volatile elements, and automatic constant volume, dissolution, and homogenization under the action of ultrasonic waves to achieve automatic, efficient and rapid pretreatment of samples. a device. Background technique [0002] The detection of heavy metal elements in organic matter samples in food, environment, life science and other fields has attracted more and more attention from the whole society. Before the determination of heavy metals by analytical instruments, most of the samples must be pre-treated to make the heavy metal elements inorganic and transferred into a liquid solution. According to data reports, samples are collected, pre-treated, analyzed, and data processed, among which sample pre-pro...
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IPC IPC(8): G01N35/00G01N35/04G01N35/10G01N1/28
Inventor 杨晓明周团坤李中玺张尼张莹沈坤吴随周
Owner 西安西北有色地质研究院有限公司