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[Chemical Knowledge]：Detection Method and Analysis Technology of Terephthalic Ether

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Detection method

of terephthalic ether

Polyethylene ethers (PBDEs) are a class of organic pollutants that are widely found in the environment. They are mainly used as flame retardants and are added to many consumer products, such as electronic equipment, plastic products and building materials. Long-term exposure to PBDEs may cause harm to human health and the environment, so accurate and efficient detection of PBDEs is essential.

1. gas chromatography-mass spectrometry (GC-MS)

Gas chromatography-mass spectrometry (GC-MS) is one of the commonly used methods for the detection of PBDEs. The PBDEs in the sample were extracted and concentrated, then separated by gas chromatography, and then analyzed qualitatively and quantitatively by mass spectrometry. GC-MS has the advantages of high sensitivity, good resolution and strong reliability, and can accurately and quickly detect the existence and content of PBDEs in samples, so it is widely used in environmental monitoring, food safety and other fields.

2. high performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS)

High performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS) is another commonly used method for the detection of PBDEs. In this method, PBDEs in the sample were extracted, separated by high performance liquid chromatography, and then analyzed qualitatively and quantitatively by tandem mass spectrometry. HPLC-MS/MS has the advantages of high sensitivity, good selectivity and simple sample pretreatment, which can effectively detect the presence and content of PBDEs in samples, so it has been widely used in food, aquatic products and other fields.

3. immunoassay

Immunoassay is a rapid and simple method for the detection of PBDEs. The method uses specific antibodies to bind to PBDEs to form antigen-antibody complexes, which are then detected and quantified by optical or electrochemical methods. Immunoassay has the advantages of simple operation, short detection cycle and low cost, and is suitable for rapid screening and preliminary quantitative analysis of large-scale samples, but its sensitivity and selectivity are relatively low, and it is usually used as a preliminary screening method or auxiliary means.

The several PBDEs detection methods described above have their own characteristics, and the appropriate methods can be selected for detection and analysis according to specific needs and actual conditions. In practical applications, it is usually necessary to comprehensively consider the sensitivity, accuracy, cost and other factors of detection, and select the most suitable detection method to ensure the accuracy and reliability of the detection results, thereby ensuring the safety of the environment and human health.

Analytical techniques

for terephthalic ether

In addition to the detection method, the analysis technology of terephthalic ether is also an important part of related research and application. Through the in-depth analysis of the distribution and transformation law of PBDEs in the environment, we can better understand its source, migration and removal mechanism, and provide scientific basis and technical support for environmental protection and health safety.

1. environmental behavior and bioaccumulation research

The behavior and bioconcentration of terephthalic ether in the environment is one of the focuses of the study. By collecting different environmental media and biological samples, analyzing the content and composition characteristics of PBDEs, it can reveal the distribution law and migration and transformation process in the environment, and provide a scientific basis for the formulation of environmental management and pollution prevention measures.

2. biomarker research

Biomarkers refer to biological molecules or biological effect indicators that can reflect the exposure level of specific pollutants in vivo or in vitro. The study of PBDEs biomarkers can evaluate the exposure level and potential harm of PBDEs in the environment by monitoring the content of PBDEs and the formation of metabolites in organisms, and provide reference for environmental monitoring and health risk assessment.

3. degradation and removal technology research

The research on the degradation and removal technology of PBDEs is the key to solve the problem of pollution in the environment. Degradation or removal of PBDEs by biological, chemical or physical methods can effectively reduce their residues and accumulation in the environment,

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