Selective and sensitive detection of nitrite based on NO sensing on a polymer-coated rotating disc electrode

Preparation of hexagonal BN whiskers synthesized at low temperature and their application in fabricating an electrochemical nitrite sensor

“…On the one hand, most nitrite anions are protonated in acidic solutions because the pK a of HNO 2 is 3.3. 42 Protonation was proven to be involved in the catalytic reaction process. Thus, in this case the electrochemically active species should be HNO 2 rather than NO 2 .…”

Electrochemical detection of nitrite based on glassy carbon electrode modified with gold–polyaniline–graphene nanocomposites

“…On the other hand, most nitrite anions are protonated in acidic solutions because the pK a of HNO 2 is 3.3. 38 Protonation was proven to be involved in the catalytic reaction process. Thus, in this case the electrochemically active species should be HNO 2 rather than NO 2 À .…”

Construction of Au nanoparticles on choline chloride modified glassy carbon electrode for sensitive detection of nitrite

“…On the other hand, since the pK a of HNO 2 was 3.3, most nitrite anions were protonated in acidic solution (Guo et al, 2005;Milczarek, 2007). Protonation was proved to involve in the catalytic reaction process, and the active species should be HNO 2 instead of NO 2 − (Salimi et al, 2006;Huang et al, 2008).…”