Microwave-assisted synthesis graphite-supported Pd nanoparticles for detection of nitrite

- A microwave-assisted method is employed for synthesis palladium/graphite (Pd/Grp).
- Pd nanoparticles are uniformly and the diameter was about 5-15 nm.
- The Pd/Grp can be used to determine nitrite concentration in a wide linear range.
- The limit of detection is 0.071 μM at a signal-to-noise ratio = 3.
- The sensitivity was 0.29 μA μM−1 cm−2 by amperometric response method.