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A method for the enrichment and detection of BPA based on a stable porous silicon electrode

A technology of porous silicon and electrodes, applied in the direction of material electrochemical variables, etc., can solve the problems of high cost of analysis, environmental pollution, difficulty in adapting to a large number of samples and on-site testing, etc.

Inactive Publication Date: 2017-10-10
NANJING NORMAL UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this type of analysis method needs to separate and extract the analyte from the sample, and remove impurity interference and other pre-treatments. These pre-treatments are very complicated, require high levels of laboratory and instrumentation, and the analysis cost is expensive. A large number of organic reagents will pollute the environment, which is not conducive to widespread use, and it is difficult to adapt to the requirements of a large number of samples and on-site testing

Method used

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  • A method for the enrichment and detection of BPA based on a stable porous silicon electrode
  • A method for the enrichment and detection of BPA based on a stable porous silicon electrode
  • A method for the enrichment and detection of BPA based on a stable porous silicon electrode

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Embodiment 1

[0032] Cut plastic bottles, beverage paper cups, and food packaging materials purchased on the market into pieces, accurately weigh 1g of the sample, add 20mL of methanol, ultrasonically soak in an ultrasonic cleaner for 24 hours, filter, concentrate the extract, volatilize naturally, and then buffer with phosphate The solution was dilute to 100mL and used as a standard standby solution.

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Abstract

The invention relates to a method for enriching and detecting BPA based on a stable porous silicon electrode. The method utilizes a stable porous silicon-carbon-nano-gold film electrode with a large aperture to directly enrich and electrochemically detect BPA in a sample. An electrochemical signal for direct quantitative and qualitative detection of BPA. The detection limit of this method for BPA is 3.459×10‑8mol / L, and the linear detection range is 5.0×10‑8mol / L~1.0×10‑5mol / L.

Description

technical field [0001] The invention relates to a rapid, high-sensitivity and low-cost detection technology method for BPA in the environment and various food packaging materials. Specifically, the BPA in the sample is enriched by the prepared porous silicon-carbon-nano-gold film electrode, and then the electrochemical high-sensitivity detection is directly carried out. Background technique [0002] Bisphenol A, also known as BPA, is used industrially to synthesize materials such as polycarbonate (PC) and epoxy resin. Since the 1960s, it has been used to make plastic (milk) bottles, suction cups for children, and coating the inside of food and beverage (milk powder) cans. BPA is ubiquitous. Bisphenol A is contained in beverage bottles and various food packaging materials. Animal experiments have proved that bisphenol A is a kind of estrogen, which can affect the normal hormone levels in organisms and cause normal metabolic disorders in animals. In addition Bisphenol A also...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/48G01N27/31
Inventor 李建林陈宇李玮郑铁松
Owner NANJING NORMAL UNIVERSITY