ZIF-9-Derived Cobalt and Nitrogen-Doped Carbon Nanocomposites for Sensitive Electrochemical Nitrite Determination. - Li, Yuan; Jia, Shaoqian; Shi, Yuxin; Kong, Lingxin; Su, Yichun; Zhang, Guangxun; Yan, Bingyi; Pang, Huan; Yu, Feng (Molecules, 2026)