In amperometric glucose sensors, which species is oxidized at the electrode to generate the current signal?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $9.99Unlock all

Prepare for the Ciulla Clinical Chemistry Test with comprehensive flashcards and detailed multiple-choice questions. Each question includes helpful hints and explanations. Boost your confidence and excel in your test!

Multiple Choice

In amperometric glucose sensors, which species is oxidized at the electrode to generate the current signal?

Explanation:
In amperometric glucose sensing with glucose oxidase, glucose is first oxidized by the enzyme, which reduces oxygen to hydrogen peroxide. The hydrogen peroxide then diffuses to the electrode and is oxidized there, producing the measurable current. The electrode reaction is H2O2 → O2 + 2H+ + 2e−, so the current corresponds to the amount of H2O2 formed, linking it to the glucose concentration.

In amperometric glucose sensing with glucose oxidase, glucose is first oxidized by the enzyme, which reduces oxygen to hydrogen peroxide. The hydrogen peroxide then diffuses to the electrode and is oxidized there, producing the measurable current. The electrode reaction is H2O2 → O2 + 2H+ + 2e−, so the current corresponds to the amount of H2O2 formed, linking it to the glucose concentration.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy