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Detection method of heavy metals Pb, Cd, Cr and Hg in solid surfacing material

A detection method and heavy metal technology, which is applied in the detection of Cd, Hg, Cr, and heavy metal Pb in solid surface materials, can solve the problems of no detection basis and no research for detection requirements, and achieve strong applicability, guidance, and legitimate rights and interests Guaranteed effect

Inactive Publication Date: 2015-06-17
NANJING INST OF PROD QUALITY INSPECTION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no research on the detection method of heavy metal elements in solid surface materials in China, and there is no detection basis for the corresponding detection needs of the market and relevant government supervision. Therefore, it is urgent to develop corresponding detection methods for the healthy development of related industries and safer use of consumers. products and services

Method used

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  • Detection method of heavy metals Pb, Cd, Cr and Hg in solid surfacing material
  • Detection method of heavy metals Pb, Cd, Cr and Hg in solid surfacing material
  • Detection method of heavy metals Pb, Cd, Cr and Hg in solid surfacing material

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Experimental program
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Effect test

Embodiment 1

[0031] (1) Weigh 0.5g of the solid surface material sample, accurate to 0.0001g, add 3.0g of sodium hydroxide, slowly raise the temperature to 550°C, react at this temperature for 0.5h, take out and shake well during the period;

[0032] (2) After the reaction, take out the reactant and place it in a beaker containing 100mL of water, heat it to boiling, and add 15mL of concentrated hydrochloric acid; rinse the silver crucible with dilute hydrochloric acid, put the reactant in it, continue to boil for 3min, and then cool to At room temperature, transfer to a 250mL volumetric flask for constant volume;

[0033] (3) Pipette 6 equal portions of the test solution in step (2) into 6 sample tubes for testing, and the test solution in each sample tube is 9 mL;

[0034] (4) Measure the standard solution containing Pb, Cd, Cr, Hg elements, dilute it step by step with water, and prepare a mixed standard solution with a concentration of 0.25ppm, 0.5ppm, 1ppm, 2ppm, 4ppm and 8ppm, for the ...

Embodiment 2

[0042] (1) Weigh 0.5g of each of the two solid surface samples, accurate to 0.0001g, add 1.0g and 3.0g of sodium hydroxide, slowly raise the temperature to 620°C, react at this temperature for 0.5h, take out and shake well during the period;

[0043] (2) After the reaction, take out the reactant and place it in a beaker containing 100mL of water, heat it to boiling, and add 15mL of concentrated hydrochloric acid; rinse the silver crucible with dilute hydrochloric acid, put the reactant in it, continue to boil for 3min, and then cool to At room temperature, transfer to a 250mL volumetric flask for constant volume;

[0044](3) Pipette 6 equal portions of the test solution in step (2) into 6 sample tubes for testing, and the test solution in each sample tube is 9 mL;

[0045] (4) Measure the standard solution containing Pb, Cd, Cr, and Hg elements, dilute it step by step with Milli-Q water, and prepare a mixed standard solution whose concentration is successively 0.25ppm, 0.5ppm,...

Embodiment 3

[0053] (1) Weigh 1.0g and 3.0g of sodium hydroxide and place them in a beaker respectively, add Milli-Q water to dissolve it;

[0054] (2) Then add 5.0mL and 15.0mL of concentrated hydrochloric acid to the above two beakers respectively, stir evenly, transfer to a 250mL volumetric flask and set the volume to the mark, to be used for the construction of the standard addition method calibration curve;

[0055] (3) Pipette 6 equal portions of 9mL of the above two solutions, place them in 6 containers in turn, measure the standard solution containing Pb, Cd, Cr, Hg, and dilute to 10mL step by step with Milli-Q water , prepared into a mixed standard solution with concentrations of 0.25ppm, 0.5ppm, 1ppm, 2ppm, 4ppm, and 8ppm in turn, to be tested and used to draw a standard working curve, and use the working curve to determine the content of the target test element in the sample to be tested;

[0056] (4) adopt the calibration solution of method configuration standard curve method i...

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Abstract

The invention discloses a detection method of heavy metals Pb, Cd, Cr and Hg in a solid surfacing material; the detection method comprises the steps: under the condition of the temperature of 500-650 DEG C, adopting an appropriate amount of sodium hydroxide for alkali melting treatment on a sample, followed by neutralizing the sample with hydrochloric acid, and determining the contents of the heavy metals Pb, Cd, Cr and Hg in the sample by an inductively coupled plasma emission spectrometric technique. At present, no research method for detection of the heavy metals in the solid surfacing material exists in China, and also no clear basis exists; the detection method disclosed by the invention can quickly and accurately detect the contents of the heavy metal elements Pb, Cd, Cr and Hg in the solid surfacing material, so that the solid surfacing material and other relevant industries have standards which can be depended on, besides, service is provided for healthy development of the relevant industries, and a guarantee is provided for legitimate rights and interests of consumers. The method has a highly strong applicability and guidance.

Description

technical field [0001] The invention relates to a detection method for heavy metals in solid surface materials, in particular to a detection method for heavy metals Pb, Cd, Cr and Hg in solid surface materials. Background technique [0002] With the acceleration of China's infrastructure construction, the demand for building decoration has also increased, and the environmental pollution caused by interior decoration and the impact on human health have gradually attracted people's attention. Solid surface material products have many excellent properties, such as: high hardness, strong toughness, not easy to crack, break, etc. Therefore, most of the home kitchen, bathroom and other decoration will use this type of product, and it is very popular in the decoration market. favored by those. Solid surface material products are made of resin: such as polymethyl methacrylate, unsaturated polyester resin, etc. as matrix adhesives, inorganic materials: aluminum hydroxide, quartz sto...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/73G01N1/28G01N1/38
Inventor 王金砖毛敏明刘琨梁峙黄臻杨徳维夏前峰
Owner NANJING INST OF PROD QUALITY INSPECTION