Rezaei Behzad, Meghdadi Soraia, Bagherpour Saeid
Department of Chemistry, Isfahan University of Technology, Isfahan 84156-83111, Islamic Republic of Iran.
J Hazard Mater. 2009 Jan 30;161(2-3):641-8. doi: 10.1016/j.jhazmat.2008.04.005. Epub 2008 Apr 6.
A synthesized bis(dibenzoylmethanato)Co(II) complex (Co(DBM)(2)), has been used as a ionophore for the preparation of a new perchlorate ion-selective electrode. The electrode exhibits a Nernstian response over the perchlorate concentration range of 8.0x10(-7)-1.0x10(-1)M with a slope of 60.3+/-0.5 mV per decade of concentration. The limit of detection as determined from the intersection of the extrapolated linear segments of the calibration plot is 5.6x10(-7)M. The electrode shows good selectivity towards perchlorate with respect to many common anions. The response time of the sensor is very fast (< or = 5s), and can be used for at least 2 months in the pH range of 2.0-9.0. The electrode was used to determine perchlorate in water and human urine. The interaction of the ionophore with perchlorate ions was demonstrated by UV-vis spectroscopy.
一种合成的双（二苯甲酰甲烷）钴（II）配合物（Co(DBM)₂）已被用作离子载体来制备一种新型高氯酸根离子选择性电极。该电极在8.0×10⁻⁷ - 1.0×10⁻¹ M的高氯酸根浓度范围内呈现能斯特响应，浓度每变化十倍斜率为60.3±0.5 mV。根据校准曲线外推线性段的交点确定的检测限为5.6×10⁻⁷ M。该电极对高氯酸根相对于许多常见阴离子具有良好的选择性。传感器的响应时间非常快（≤5秒），并且在2.0 - 9.0的pH范围内至少可使用2个月。该电极用于测定水和人尿中的高氯酸根。通过紫外 - 可见光谱法证明了离子载体与高氯酸根离子之间的相互作用。
