Laboratory of Instrumentation and Analytical Chemistry, Key Lab of Separation Science for Analytical Chemistry of CAS, Dalian Institute of Chemical Physics, CAS, Dalian, Liaoning 116023, PR China.
Talanta. 2013 Apr 15;108:103-8. doi: 10.1016/j.talanta.2013.02.073. Epub 2013 Mar 7.
A fluorometric paper-based sensor array has been developed for the sensitive and convenient determination of seven heavy-metal ions at their wastewater discharge standard concentrations. Combining with nine cross-reactive BODIPY fluorescent indicators and array technologies-based pattern-recognition, we have obtained the discrimination capability of seven different heavy-metal ions at their wastewater discharge standard concentrations. After the immobilization of indicators and the enrichment of analytes, identification of the heavy-metal ions was readily acquired using a standard chemometric approach. Clear differentiation among heavy-metal ions as a function of concentration was also achieved, even down to 10(-7)M. A semi-quantitative estimation of the heavy-metal ion concentration was obtained by comparing color changes with a set of known concentrations. The sensor array was tentatively investigated in spiked tap water and sea water, and showed possible feasibility for real sample testing.
已经开发出一种荧光纸质传感器阵列，用于灵敏、方便地测定七种重金属离子在其废水排放标准浓度下的含量。结合九个交叉反应的 BODIPY 荧光指示剂和基于阵列技术的模式识别，我们已经获得了七种不同重金属离子在其废水排放标准浓度下的区分能力。在指示剂的固定化和分析物的富集之后，使用标准的化学计量方法很容易获得重金属离子的识别。即使浓度低至 10(-7)M，也可以实现重金属离子浓度的清晰区分。通过将颜色变化与一组已知浓度进行比较，可以对重金属离子的浓度进行半定量估计。该传感器阵列在加标自来水和海水中进行了初步研究，显示出用于实际样品测试的可能可行性。
