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Rapid quantitative detection method for polycyclic aromatic hydrocarbons in surface water

A quantitative detection method and polycyclic aromatic hydrocarbon technology, applied in the detection field, can solve the problems of limited application and long extraction time, and achieve the effects of improved accuracy, short extraction time and high detection accuracy

Inactive Publication Date: 2019-02-19
浙江环境监测工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although SBSE technology has the characteristics of high sensitivity, due to the limitation of its adsorption mechanism, the existing reported methods have the disadvantage of long extraction time, which limits its practical application.

Method used

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  • Rapid quantitative detection method for polycyclic aromatic hydrocarbons in surface water
  • Rapid quantitative detection method for polycyclic aromatic hydrocarbons in surface water
  • Rapid quantitative detection method for polycyclic aromatic hydrocarbons in surface water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0068] The difference from Example 1 is that the ultrasonic sealing stirring time in step ① in e of this example is 20 minutes.

Embodiment 3

[0070] The difference from Example 1 is that the ultrasonic sealing stirring time in step ① in e of this example is 25 minutes.

[0071] 2.4, Embodiment 4

[0072] The difference from Example 1 is that step ① of this example uses three 10 mm×0.5 mm PDMS-coated SPE stirring rods in b.

[0073] 2.5, Embodiment 5

[0074] A rapid quantitative detection method for polycyclic aromatic hydrocarbons in surface water, comprising the following steps:

[0075] ①, PAHs extraction

[0076] a. Accurately measure 500mL water sample and place it in a 1L conical flask;

[0077] b. Place two 10mm×0.5mm and one 20mm×0.5mm PDMS-coated solid phase extraction stirring rods in the thermal desorption tube of the thermal desorption module, and age at 280°C for 60 minutes;

[0078] c. Adsorb the aging solid phase extraction stirring rod in step b on the cleaned polytetrafluoroethylene magnetic stirring bar, then place it in the conical flask in step a and seal the conical flask with a rubber stopp...

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Abstract

The invention discloses a rapid quantitative detection method for polycyclic aromatic hydrocarbons in surface water, and relates to a detection method. The method comprises the following operation steps: PAHs extraction, high temperature thermal desorption, cold trapping, and GC-MS separation. The rapid quantitative detection method for polycyclic aromatic hydrocarbons in surface water adopts SBSEtechnology and TD-GC-MS, and simultaneously extracts and adsorbs the PAHs with multiple stir bars to establish a rapid detection method for 16 kinds of PAHs in water. The method can quickly determinethe content of ultra-trace PAHs in surface water, and has the characteristics of high sensitivity and high accuracy.

Description

technical field [0001] The invention relates to a detection method, in particular to a rapid quantitative detection method for polycyclic aromatic hydrocarbons in surface water. Background technique [0002] Polycyclic aromatic hydrocarbons (PAHs) are semi-volatile hydrocarbons produced during the incomplete combustion of coal and other organic matter, widely exist in water, soil, sediment and other environmental media, and have strong environmental endocrine disrupting effects Will cause harm to human health. In recent years, it has been widely concerned at home and abroad, and the content of such substances has been strictly limited in the environmental quality standards of surface water and environmental risk assessment in my country. [0003] At present, the determination methods of PAHs in surface water mainly include liquid-liquid extraction (LLE) and solid-phase extraction (SPE) combined with gas chromatography or liquid chromatography. These traditional pretreatmen...

Claims

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Application Information

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IPC IPC(8): G01N30/88G01N30/06
CPCG01N30/06G01N30/88G01N2030/062
Inventor 李沐霏朱国华冯利孙军军王玲
Owner 浙江环境监测工程有限公司
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