School of Environmental Science and Engineering, Donghua University, Shanghai 201620, PR China.
Talanta. 2010 Sep 15;82(4):1612-5. doi: 10.1016/j.talanta.2010.07.038. Epub 2010 Jul 23.
A centrifugal microfluidic device was developed for the rapid sequential determination of two critical environmental species, nitrate and nitrite, in water samples. The nitrate is reduced to nitrite and the nitrite is derivatized. The analytes are determined spectrophotometrically through the disc with a 1.4mm pathlength. The detection limits are 0.05 and 0.16 mg L(-1) for nitrite and nitrate respectively. The use of powdered reagents, the 100 microL sample required and the design of the device suggest that it would be suitable for field use.
一种离心微流控装置被开发出来，用于快速顺序测定水样中的两种关键环境物种，硝酸盐和亚硝酸盐。硝酸盐被还原为亚硝酸盐，然后亚硝酸盐被衍生化。通过带有 1.4mm 光程的圆盘，分光光度法测定这些分析物。亚硝酸盐和硝酸盐的检测限分别为 0.05 和 0.16mg/L。使用粉末试剂、100μL 样品量和装置的设计表明，它将适用于现场使用。
