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Automatic sample ashing pretreatment method for organic matter sample component analysis

A component analysis and organic matter technology, which is applied in the field of analysis and detection, can solve the problems of large influence of human factors and difficulty in ensuring high precision in the ashing process, and achieve the effects of avoiding volatilization loss, avoiding errors, and low ashing temperature

Active Publication Date: 2014-12-10
西安西北有色地质研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, the pretreatment process is manually operated by analysts, and human factors are greatly affected, so it is difficult to guarantee the high precision of the ashing process.

Method used

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  • Automatic sample ashing pretreatment method for organic matter sample component analysis
  • Automatic sample ashing pretreatment method for organic matter sample component analysis
  • Automatic sample ashing pretreatment method for organic matter sample component analysis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The sample tube is composed of a detachable inner tube 22 and an outer tube 21, and the inner tube 22 is provided with a quartz sand core sample plate 23; weigh 0.20 g of wheat (GBW10011), and evenly spread it on the quartz sand core sample plate of the inner tube 22 23 above. The inner tube 22 of the sample tube is inserted into the outer tube 21 , and then placed in the sample tube rack 2 , and the sample tube rack 2 is placed in the sampling position 13 of the sample rack. Then start the ashing automatic working program by computer 10 . After that, the manipulator 1 automatically grabs the sample rack 2 and places it in the heating furnace 3, then the manipulator 1 places the ozone injection assembly 7 above the sample tube rack 2 and inserts the inner sample tube 22, and the manipulator 1 injects the ozone assembly 7 from the A downward pressure is applied from above, so that the ozone gas needle in the ozone injection assembly 7 and the upper opening of the sample...

Embodiment 2

[0026]The sample tube is composed of a detachable inner tube 22 and an outer tube 21, and the inner tube 22 is provided with a quartz sand core sample plate 23; weigh 0.20 g of tea leaves (GBW10016), and evenly spread them on the quartz sand core sample plate of the inner tube 22 23 above. The inner tube 22 of the sample tube is inserted into the outer tube 21 , and then placed in the sample tube rack 2 , and the sample tube rack 2 is placed in the sampling position 13 of the sample rack. Then start the ashing automatic working program by computer 10 . After that, the manipulator 1 automatically grabs the sample rack 2 and places it in the heating furnace 3, then the manipulator 1 places the ozone injection assembly 7 above the sample tube rack 2 and inserts the inner sample tube 22, and the manipulator 1 injects the ozone assembly 7 from the A downward pressure is applied from above, so that the ozone gas needle in the ozone injection assembly 7 and the upper opening of the ...

Embodiment 3

[0028] The sample tube is composed of a detachable inner tube 22 and an outer tube 21. The inner tube 22 is provided with a quartz sand core sample plate 23; weigh 0.20 g of human hair (GBW07601a), and evenly spread the quartz sand core sample on the inner tube 22. plate 23 above. The inner tube 22 of the sample tube is inserted into the outer tube 21 , and then placed in the sample tube rack 2 , and the sample tube rack 2 is placed in the sampling position 13 of the sample rack. Then start the ashing automatic working program by computer 10 . After that, the manipulator 1 automatically grabs the sample rack 2 and places it in the heating furnace 3, then the manipulator 1 places the ozone injection assembly 7 above the sample tube rack 2 and inserts the inner sample tube 22, and the manipulator 1 injects the ozone assembly 7 from the A downward pressure is applied from above, so that the ozone gas needle in the ozone injection assembly 7 and the upper opening of the sample tu...

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Abstract

The invention relates to an automatic sample ashing pretreatment method for organic matter sample component analysis. The sample pretreatment process comprises steps of ashing, dissolving, volume fixation and homogenization which are automatically completed through chips according to preset programs. According to the automatic sample ashing pretreatment method, an ozone auxiliary oxidation technique is adopted to reduce the ashing temperature, shorten the ashing time and reduce the element volatilization. A cooling technique is adopted to trap volatile elements. An ultrasonic technique is adopted to dissolve and homogenize ash content. The sample ashing pretreatment process is automatically performed through chips according to preset programs, so that errors caused by manual operation are avoided, the labor cost is lowered, the accuracy and the precision of the method are improved, and the working efficiency is improved.

Description

technical field [0001] The invention belongs to the field of analysis and detection, and relates to an automatic sample ashing pretreatment method for component analysis of organic matter samples, and the whole process is automatically completed through a preset control program. Background technique [0002] Food and environmental safety issues caused by frequent heavy metal pollution in recent years have aroused great concern from the whole society on the content of heavy metals. Real-time, fast and accurate understanding of the heavy metal content of inspection materials is an urgent need of the current society and the public. Therefore, the establishment of rapid and accurate detection methods for inorganic heavy metal pollutants in food, environmental and biological samples is the goal that analysts have been pursuing for a long time. Currently, for food, environment, and biological samples, which are mainly based on organic matrices, before using analytical instruments...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28
Inventor 张尼沈坤李中玺周团坤杨晓明张莹
Owner 西安西北有色地质研究院有限公司