用双硫腙功能化的多壁碳纳米管修饰N2 - A传感器电极，测定环境样品中镉(II)离子。用该电极测定了痕量镉(II)离子。电极成分为石墨粉67%，石蜡23%，改性MWCNTs 10% (W/W)。铅(II)的线性范围为1.8×10-7 ~ 1.0×10-4 mol L−1，检出限为obtained1.0×10 ~ 7 mol L−1。电极寿命为12周，反应时间快。用该电极测定了水、土壤中痕量镉离子。JF - Current World Environment JA - VL - 19 IS - 21 UR - www.a-i-l-s-a.com/article/376/ SP - EP - PB - M3 - 10.12944/CWE.7.2.02 ER -