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Rapid detection method for waste oil

A detection method, the technology of waste oil, which is applied in the detection field, can solve the problems of time-consuming, cumbersome operation, and judgment of waste oil, etc., and achieve the effect of simple equipment, easy operation and control, and mild conditions

Inactive Publication Date: 2013-08-07
XUZHOU KAIMIKE NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is difficult to judge the existence of waste oil in a short time according to the detection method of conventional edible oil
The Chinese invention patent whose document application number is 201210262743.7 provides a method for detecting waste oil by biotracing technology, and the Chinese invention patent whose document application number is 201210320081.4 proposes a method for identifying waste oil by detecting hydroxyl groups. These methods are cumbersome to operate and consume too long

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1: A kind of rapid detection method of waste oil

[0027] Weigh and dissolve 1.2711g of sodium chloride burned at 600°C and shake it up to 500mL to obtain a sodium ion stock solution. The concentration of the sodium ion stock solution is 1.0000g / mL, draw 1mL of the stock solution, transfer it into a 1000mL volumetric flask, and dilute to the mark to obtain a standard working solution; weigh 1g of cesium nitrate and dissolve it in water, and dilute to 100mL; measure 2mL of hydrochloric acid and mix with water Dilute to 100mL; draw standard working solution 0.0mL, 1.0mL, 2.0mL, 3.0mL, 4.0mL, 5.0mL respectively into 1000mL volumetric flask, add 3mL of 1% cesium nitrate respectively, dilute to the mark with 2% hydrochloric acid, shake well , to obtain a series of sodium standard solutions with concentrations of 0.0μg / L, 1.0μg / L, 2.0μg / L, 3.0μg / L, 4.0μg / L and 5.0μg / L; after the selected instrument parameters are input into the atomic absorption Ignite the acetyle...

Embodiment 2

[0028] Embodiment 2: a kind of rapid detection method of waste oil

[0029] Weigh and dissolve 1.2711g of sodium chloride burned at 650°C, shake well and set the volume to 500mL to obtain a sodium ion stock solution. The concentration of the sodium ion stock solution is 1.0000g / mL, draw 1mL of the stock solution, transfer it into a 1000mL volumetric flask, and dilute to the mark to obtain a standard working solution; weigh 1g of cesium nitrate and dissolve it in water, and dilute to 100mL; measure 2mL of hydrochloric acid and mix with water Dilute to 100mL; draw standard working solution 0.0mL, 1.0mL, 2.0mL, 3.0mL, 4.0mL, 5.0mL into 1000mL volumetric flask, respectively add 3mL of 1% cesium nitrate, dilute to the mark with 2% hydrochloric acid, shake well , to obtain a series of sodium standard solutions with concentrations of 0.0μg / L, 1.0μg / L, 2.0μg / L, 3.0μg / L, 4.0μg / L and 5.0μg / L; after the selected instrument parameters are input into the atomic absorption Ignite the acety...

Embodiment 3

[0030] Embodiment 3: A kind of rapid detection method of waste oil

[0031] Weigh and dissolve 1.2711g of sodium chloride burned at 700°C, shake well and set the volume to 500mL to obtain a sodium ion stock solution. The concentration of the sodium ion stock solution is 1.0000g / mL, draw 1mL of the stock solution, transfer it into a 1000mL volumetric flask, and dilute to the mark to obtain a standard working solution; weigh 1g of cesium nitrate and dissolve it in water, and dilute to 100mL; measure 2mL of hydrochloric acid and mix with water Dilute to 100mL; draw standard working solution 0.0mL, 1.0mL, 2.0mL, 3.0mL, 4.0mL, 5.0mL respectively into 1000mL volumetric flask, add 1% cesium nitrate 3mL respectively, dilute to the mark with 2% hydrochloric acid, shake well , to obtain a series of sodium standard solutions with concentrations of 0.0μg / L, 1.0μg / L, 2.0μg / L, 3.0μg / L, 4.0μg / L and 5.0μg / L; after the selected instrument parameters are input into the atomic absorption Ignite...

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Abstract

The invention discloses a rapid detection method for waste oil, belonging to the analysis technical field. The method comprises the steps of: 1)preparation of a sodium ion standard solution; 2) preparation of a cesium nitrate solution (1%); 3) preparation of a hydrochloric acid solution (2%); 4) drawing of a working curve; 5) sample measurement and calculation. By using 1[mu]g / L as a sodium ion concentration standard, whether a tested oil sample is waste oil or mixed with waste oil can be quickly and efficiently determined. The method of the present invention requires simple equipment, is environment friendly, and simple and easy to control, provides further convenience for application in the edible oil quality inspection technical field, and is of great practical value.

Description

technical field [0001] The invention relates to a detection method, in particular to a rapid detection method of waste oil. Background technique [0002] Waste oil refers to the leftovers of the kitchen cabinet after cooking and eating, and the leftover oil extracted by methods such as filtration, layering, and decolorization. It is difficult to distinguish this oil from the cooking oil on the market in appearance. However, due to high-temperature cooking processing and long-term contact with air, its chemical properties have changed greatly compared with edible oil. According to the statistics of relevant departments, there are more than 30 million tons of waste oil or swill produced from the catering industry in my country every year, and part of the waste oil flows back to the dining table one after another, resulting in many "waste oil" incidents, which have brought great harm to the health of the people. harm. It is difficult to judge the existence of waste oil in a s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/31
Inventor 蔡佩君谭静萍李荣赵云李成军
Owner XUZHOU KAIMIKE NEW MATERIALS
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