Simultaneous determination of ultra-trace lead and cadmium at a hydroxyapatite-modified carbon ionic liquid electrode by square-wave stripping voltammetry

Yonghong Li, Xiaoying Liu, Xiandong Zeng, Yong Liu, Xiaotao Liu, Wanzhi Wei and Shenglian Luo

Sensors and Actuators B: Chemical 139 ( 2 ): 604 - 610 , 2009