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Detecting method for simultaneously analyzing a plurality of heavy metals in seed coating

A detection method, heavy metal technology, applied in the field of analytical chemistry, to achieve the effect of promoting the progress of seed technology, simple method and ensuring safety

Active Publication Date: 2015-02-25
YUNNAN ACAD OF TOBACCO AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Coating agent is an essential raw material for the production of crop coated seeds, which contains a certain amount of heavy metal elements. At present, there is no relevant report on the detection method of heavy metals in coating agent. It is very necessary to analyze the detection methods of various heavy metal elements in the coating agent, which is of great practical significance to ensure the safety of crop production from the source, strengthen the control of crop safety and quality, and promote the progress of seed technology

Method used

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  • Detecting method for simultaneously analyzing a plurality of heavy metals in seed coating
  • Detecting method for simultaneously analyzing a plurality of heavy metals in seed coating
  • Detecting method for simultaneously analyzing a plurality of heavy metals in seed coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] A. Pretreatment: Accurately weigh 0.1~0.3g of tobacco coating agent sample, put it into a 150 mL quartz conical flask, add 10~20ml of digestion solution, heat and digest at 70~90℃ for 0.5~3h until the foam disappears, continue Control the temperature at 70~90°C for 0.4~0.6h, raise the temperature to 140~160°C and heat for 1.5~2.5h, then continue to raise the temperature to 280~320°C and control the temperature for 10~40min to remove the acid solution to the wet salt state, use 8 Rinse the small funnel and the wall of the quartz triangular flask with ~12ml of water, add 1~2ml of nitric acid, heat to a slight boil at a temperature of 90~100°C, cool to room temperature, transfer to a 50 mL plastic volumetric flask to constant volume, and filter to obtain the sample solution; Prepare reagent blank solution by the same procedure.

[0066] B. Determination: Use tuning solution (1 μg / L, beryllium, cerium, iron, indium, lithium, magnesium, lead, uranium in 1% nitric acid soluti...

Embodiment 2

[0071] A. Pretreatment: Accurately weigh 0.1~0.3g of tobacco coating agent sample, put it into a 150 mL quartz conical flask, add 10~20ml of digestion solution, heat and digest at 70~90℃ for 0.5~3h until the foam disappears, continue Control the temperature at 70~90°C for 0.4~0.6h, raise the temperature to 140~160°C and heat for 1.5~2.5h, then continue to raise the temperature to 280~320°C and control the temperature for 10~40min to remove the acid solution to the wet salt state, use 8 Rinse the small funnel and the wall of the quartz triangular flask with ~12ml of water, add 1~2ml of nitric acid, heat to a slight boil at a temperature of 90~100°C, cool to room temperature, transfer to a 50 mL plastic volumetric flask to constant volume, and filter to obtain the sample solution; Prepare reagent blank solution by the same procedure.

[0072] B. Determination: Use tuning solution (1 μg / L, beryllium, cerium, iron, indium, lithium, magnesium, lead, uranium in 1% nitric acid soluti...

Embodiment 3

[0077] A. Pretreatment: Accurately weigh 0.1~0.3g of tobacco coating agent sample, put it into a 150 mL quartz conical flask, add 10~20ml of digestion solution, heat and digest at 70~90℃ for 0.5~3h until the foam disappears, continue Control the temperature at 70~90°C for 0.4~0.6h, raise the temperature to 140~160°C and heat for 1.5~2.5h, then continue to raise the temperature to 280~320°C and control the temperature for 10~40min to remove the acid solution to the wet salt state, use 8 Rinse the small funnel and the wall of the quartz triangular flask with ~12ml of water, add 1~2ml of nitric acid, heat to a slight boil at a temperature of 90~100°C, cool to room temperature, transfer to a 50 mL plastic volumetric flask to constant volume, and filter to obtain the sample solution; Prepare reagent blank solution by the same procedure.

[0078] B. Determination: Use tuning solution (1 μg / L, beryllium, cerium, iron, indium, lithium, magnesium, lead, uranium in 1% nitric acid soluti...

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Abstract

The invention discloses a detecting method for simultaneously analyzing a plurality of heavy metals in seed coating. The detecting method comprises pretreatment and measurement and particularly comprises the following steps: accurately weighing a sample, dissolving the sample, flushing a dissolving container through water, adding 1-2ml nitric acid, controlling the temperature to 90-100 DEG C, heating the solution to micro-boiling, cooling the solution to room temperature, transferring the solution into a volumetric flask to determine the volume, and filtering the solution to obtain a sample solution; setting instrument measuring conditions, and meanwhile, preparing a standard working solution and a standard blank solution, zero setting, creating a working curve under the set instrument conditions by utilizing contents of heavy metal element to be measured as horizontal ordinates and utilizing mass-to-charge ratio strength of the heavy metal element to be measured as longitudinal coordinates, performing linear regression on correction data, figuring out a regression equation of concentration relation of the heavy metal elements, and calculating. The method disclosed by the invention is simple, quick, high in sensitivity and capable of simultaneously analyzing a plurality of heavy metals in seed coating, and the method also has important practical significance for ensuring the crop production safety from headstream, reinforcing the crop safety quality control and prompting the seed technical progress.

Description

technical field [0001] The invention belongs to the technical field of analytical chemistry, and in particular relates to a detection method for simultaneously analyzing multiple heavy metals in a seed coating agent. Background technique [0002] Seeds are the source and basis of crop production, and are closely related to crop quality and safety. Heavy metal elements are listed as harmful substances in crops. The detection methods of heavy metals in crops and crop products have been reported. Coating agent is an essential raw material for the production of crop coated seeds, which contains a certain amount of heavy metal elements. At present, there is no relevant report on the detection method of heavy metals in coating agent. It is very necessary to analyze the detection methods of various heavy metal elements in the coating agent, which is of great practical significance to ensure the safety of crop production from the source, strengthen the control of crop safety and qua...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/64
Inventor 逄涛李勇师君丽郑昀烨马文广
Owner YUNNAN ACAD OF TOBACCO AGRI SCI
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