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Method for measuring sodium in sodium humate

A determination method, sodium humate technology, applied in the direction of material excitation analysis, thermal excitation analysis, etc., can solve the problems of high detection limit and low sensitivity, and achieve the effects of fast analysis speed, simple operation, high precision and accuracy

Inactive Publication Date: 2014-11-26
HUBEI FORBON TECH
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  • Abstract
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Problems solved by technology

At present, flame photometry is mainly used for the determination of sodium, but the sensitivity of this method is low and the detection limit is high.

Method used

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  • Method for measuring sodium in sodium humate
  • Method for measuring sodium in sodium humate
  • Method for measuring sodium in sodium humate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0021] Embodiment: a kind of assay method of sodium in sodium humate

[0022] Weigh 0.1000g (accurate to 0.0001g) of 3 kinds of humic acid samples into the digestive tube, add 5ml H 2 SO 4 , digested in a temperature-controlled far-infrared digestion furnace, first heated at 80-100°C, then raised the temperature, and added 30g / L H 2 o 2 10 drops, shake well, continue heating for 10 minutes, remove and cool for 2 minutes, add 30g / L H 2 o 2 Shake 10 drops, heat on a far-infrared digestion furnace for 10 minutes, repeat this process until the solution is clear, cool to room temperature, transfer to a 100ml volumetric flask with pure water, filter after constant volume; prepare Na standard solution, set ICP-AES instrument working parameters: RF power is 1150w, flushing pump speed is 100rpm, analysis pump speed is 50rpm, pump delay time is 5 seconds, atomizer gas flow is 0.70L / min, auxiliary gas flow is 0.50L / min, the sodium spectral line is 588.9nm, and the number of repetit...

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Abstract

The invention discloses a method for measuring sodium in sodium humate. By carrying out pretreatment with H2SO4-H2O2 in a temperature control type infrared digestion furnace and optimizing ICP-AES measurement parameters, the method for measuring the content of sodium in sodium humate by ICP-AES is established. The method has the advantages of being small in acid consumption, high in analysis speed, simple to operate and being relatively high in precision and accuracy and being suitable for analytic detection on the content of sodium in daily sodium humate.

Description

technical field [0001] The invention relates to a method for determining sodium in sodium humate. Background technique [0002] Humic acid is mainly the remains of animals and plants. It is a kind of complex natural organic substance formed and accumulated through a series of processes of microbial decomposition and transformation and geochemistry. Humic acid has been widely used in various fields such as agriculture, forestry, animal husbandry, petroleum, and chemical industry, spanning dozens of industries. Especially the current promotion of ecological agriculture construction, pollution-free agricultural production, green food, pollution-free environmental protection products, etc., makes humic acid highly respected. Facts have proved that human life and survival are inseparable from humic acid. [0003] At present, humic acid mainly exists in the market in two forms: humic acid and humate. Sodium humate is a kind of humate. It is chemically refined from high-quality l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/73
Inventor 蔚霞王仁宗刘裕
Owner HUBEI FORBON TECH
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