Highly sensitive detection of urinary cadmium to assess personal exposure.
Highly sensitive detection of urinary cadmium to assess personal exposure.
复制标题
DOI：
10.1016/j.aca.2013.02.034
复制
发表时间：
2013-04-22
影响因子：
6.2
通讯作者：
Dweik BM
中科院分区：
文献类型：
--
作者：
Argun AA;Banks AM;Merlen G;Tempelman LA;Becker MF;Schuelke T;Dweik BM
制备了一系列掺硼金刚石（BDD）超微电极阵列，并对其作为电化学传感器检测镉等痕量金属的性能进行了研究。通过循环伏安法和电化学检测水和人尿中的镉，验证了传感器的稳态扩散行为，具有高灵敏度（>200 μA/ppb/cm2）和低背景电流（<4 nA）。当超微电极阵列以最佳间距放置时，这些BDD传感器表现出s型扩散行为。他们还证明了在美国国家标准与技术研究所（NIST）认证的参考河水样品以及添加0.25-1 ppb镉的人类尿液样品中镉的定量具有线性剂量依赖的高精度。
A series of Boron-Doped Diamond (BDD) ultramicroelectrode arrays were fabricated and investigated for their performance as electrochemical sensors to detect trace level metals such as cadmium. The steady-state diffusion behavior of these sensors was validated using cyclic voltammetry followed by electrochemical detection of cadmium in water and in human urine to demonstrate high sensitivity (>200 μA/ppb/cm2) and low background current (<4 nA). When an array of ultramicroelectrodes was positioned with optimal spacing, these BDD sensors showed a sigmoidal diffusion behavior. They also demonstrated high accuracy with linear dose dependence for quantification of cadmium in a certified reference river water sample from the National Institute of Standards and Technology (NIST) as well as in a human urine sample spiked with 0.25–1 ppb cadmium.
登录
查看更多内容
影响因子：
7.4
作者：
Colley, AL;Williams, CG;Macpherson, JV
通讯作者：
Macpherson, JV
影响因子：
7.4
作者：
Feeney, R;Kounaves, SP
通讯作者：
Kounaves, SP
影响因子：
4.5
作者：
Guo, Jidong;Lindner, Erno
通讯作者：
Lindner, Erno
影响因子：
4.1
作者：
Kuo, KP;Asmussen, J
通讯作者：
Asmussen, J
影响因子：
3
作者：
Babyak, C;Smart, RR
通讯作者：
Smart, RR