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A detection method for polychlorinated biphenyl content in sewage

A polychlorinated biphenyl and detection method technology, applied in the detection field, can solve the problems of environmental safety hazards, low detection accuracy and precision, etc., achieve accurate quantitative analysis, meet the needs of research and production, and facilitate implementation

Active Publication Date: 2017-10-13
菏泽天鸿果蔬股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The problem of PCB residues in sewage has also attracted more and more attention. At present, research on the detection of PCB residues in sewage has been carried out, but the accuracy and precision of the detection are not high. For our Environmental safety brings hidden dangers

Method used

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  • A detection method for polychlorinated biphenyl content in sewage
  • A detection method for polychlorinated biphenyl content in sewage
  • A detection method for polychlorinated biphenyl content in sewage

Examples

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Embodiment 1

[0030] In the embodiment of the present invention, a method for detecting the content of polychlorinated biphenyls in sewage consists of configuring a polychlorinated biphenyl standard solution, drawing a standard curve, sample pretreatment, detecting the test solution and calculating the content of polychlorinated biphenyls in the sample. Concentration consists of four steps. Specific steps are as follows.

[0031] 1) Prepare the standard solution of PCBs: dilute the standard solution of PCBs with tetrahydrofuran to prepare 3 standard solutions of PCBs with different concentrations.

[0032] 2) draw standard curve: carry out HPLC analysis respectively to the polychlorinated biphenyl standard solution of 3 different concentrations described in step 1), computer calculates peak area according to the chromatogram drawn, and obtains polychlorinated biphenyl The standard curve between the concentration and the detection result, i.e. the peak area, wherein the chromatographic cond...

Embodiment 2

[0050] In the embodiment of the present invention, a method for detecting the content of polychlorinated biphenyls in sewage consists of configuring a polychlorinated biphenyl standard solution, drawing a standard curve, sample pretreatment, detecting the test solution and calculating the content of polychlorinated biphenyls in the sample. Concentration consists of four steps. Specific steps are as follows.

[0051] 1) Prepare standard solutions of PCBs: dilute the standard solutions of PCBs with tetrahydrofuran to prepare 10 standard solutions of PCBs with different concentrations.

[0052] 2) draw standard curve: carry out HPLC analysis respectively to the polychlorinated biphenyl standard solution of 10 different concentrations described in step 1), computer calculates peak area according to the chromatogram drawn, and obtains polychlorinated biphenyl The standard curve between the concentration and the detection result, i.e. the peak area, wherein the chromatographic cond...

Embodiment 3

[0070] In the embodiment of the present invention, a method for detecting the content of polychlorinated biphenyls in sewage consists of configuring a polychlorinated biphenyl standard solution, drawing a standard curve, sample pretreatment, detecting the test solution and calculating the content of polychlorinated biphenyls in the sample. Concentration consists of four steps. Specific steps are as follows.

[0071] 1) Prepare PCB standard solution: dilute the PCB standard solution with tetrahydrofuran to prepare 7 different concentrations of PCB standard solutions.

[0072] 2) draw standard curve: carry out HPLC analysis respectively to the polychlorinated biphenyl standard solution of 7 different concentrations described in step 1), computer calculates peak area according to the chromatogram drawn, and obtains polychlorinated biphenyl The standard curve between the concentration and the detection result, i.e. the peak area, wherein the chromatographic conditions during dete...

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Abstract

The invention discloses a detection method for the polychlorinated biphenyl content in sewage, wherein the detection method comprises four steps such as polychlorinated biphenyl standard solution preparing, standard curve drawing, sample pre-treatment, detection of a solution to be detected, and calculation of the polychlorinated biphenyl concentration in the sample. According to the present invention, the detection method can accurately, conveniently, rapidly and effectively detect the polychlorinated biphenyl content in the sewage, and can accurately perform the quantitative analysis, such that the detection method provides the reliable and easy-performing basis for the detection of the polychlorinated biphenyl content in the sewage, and can meet the requirements of research and production.

Description

technical field [0001] The invention relates to a detection method, in particular to a detection method for polychlorinated biphenyl content in sewage. Background technique [0002] English name: Polychlorinated biphenyls; Polychlorodiphenyls alias: chlorinated biphenyl; PCBs are labeled according to the number of chlorine atoms or the percentage of chlorine. In my country, it is customary to classify PCBs according to the number of chlorine-substituted biphenyls (regardless of their substitution positions). Divided into trichlorobiphenyl (PCB3), tetrachlorobiphenyl (PCB4), pentachlorobiphenyl (PCB5), hexachlorobiphenyl (PCB6), heptachlorobiphenyl (PCB7), octachlorobiphenyl (PCB8), Nonachlorobiphenyl (PCB9), Decachlorobiphenyl (PCB10). PCBs are carcinogens that tend to accumulate in adipose tissue, causing diseases of the brain, skin and internal organs, and affecting the nervous, reproductive and immune systems. [0003] PCBs are extremely difficult to dissolve in water but...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N30/88G01N30/06
Inventor 施绍安陈春雷
Owner 菏泽天鸿果蔬股份有限公司