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Development method for phthalate standard substance in soil

A technology of phthalates and reference materials, which is applied in the field of research and development of phthalates reference materials in soil, can solve problems such as vacancies and achieve accurate detection results

Inactive Publication Date: 2020-02-21
ZHEJIANG MEASUREMENT SCI RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, domestic research on PAEs in soil is still in its infancy, and there are relatively few studies on standard methods, and corresponding national standards have not been established, especially the traceability research and corresponding reference materials related to the detection of PAEs content in soil are relatively vacant.

Method used

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  • Development method for phthalate standard substance in soil
  • Development method for phthalate standard substance in soil
  • Development method for phthalate standard substance in soil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Take a batch of soil reference materials as an example.

[0047] Uniformity Test

[0048] The experimental data and result analysis of the homogeneity test are shown in Table 1, and the statistical results of the uniformity data of the soil reference material are shown in Table 2.

[0049] The statistic F value of the soil standard substance measurement result is less than the critical value F of the homogeneity test α (10,22) = 2.297, indicating that there is no significant difference between the samples. Prove that the standard substance is homogeneous.

[0050] Table 1 The experimental data of soil standard substance homogeneity test

[0051]

[0052] Table 2 Statistical results of soil standard substance homogeneity data

[0053]

[0054] short-term stability test

[0055] See Table 3 and 4 for the short-term stability test results of storage at 25°C and 60°C for 7 days, and see Table 5 for the statistical results of the short-term stability test data for...

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Abstract

The invention relates to a development method for a phthalate standard substance in soil. The development method comprises the following steps: firstly, collecting and pre-treating a soil sample; secondly, determining a phthalate concentration standard value by utilizing a standard curve method and an internal standard method and utilizing a GC-MS / MS detection method with optimized conditions; sub-packaging and numbering the sample and carrying out uniformity and stability inspection; finally, establishing a measurement model according to a concentration determination principle and calculatinguncertainty. The development method provided by the invention has accurate qualitative property; the standard curve method and the internal standard method reduce system errors caused by a single value determination method; a uniformity, stability and uncertainty evaluation method is systematic and comprehensive, so that the accuracy, stability and traceability of a measured value are ensured andthe phthalate standard substance in the soil with an accurate determined value is obtained.

Description

technical field [0001] The invention relates to the field of environmental detection, in particular to a method for developing a standard substance of phthalates in soil, which is qualitatively accurate, ensures the accuracy, stability and uniformity of the value, and is used for traceability of the value in soil environment detection. Background technique [0002] Among the many soil pollutants, phthalates are not only persistent organic pollutants (Persistent Organic Pollutants, POPs), but also environmental endocrine disrupting compounds (Endocrine Disrupting Compounds, EDCs), which are harmful to humans and other organisms. underestimate. Phthalates are chemical additives with the largest output and widest uses in the world, mainly used to increase the toughness and plasticity of plastic products. According to incomplete statistics, the annual output of plastic products in the world has reached hundreds of millions of tons, and the quality of phthalates lost to various ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02G01N30/04G01N30/06G01N30/86G01N30/72G01N30/88
CPCG01N30/02G01N30/04G01N30/06G01N30/8634G01N30/72G01N30/88G01N2030/045G01N2030/062G01N2030/884
Inventor 张辉周文钊陈怡邓超
Owner ZHEJIANG MEASUREMENT SCI RES INST