Synthesis of dual fluorescent emission probe and its selective detection of trivalent metallic ions
Metal ions are one of the main pollutants in industrial wastewater,and the trivalent metal ions,including Fe3+,Al3+,Cr3+,and Ce3+,are harmful to the environment.Schiff base probes are often used for metal ion detection,but fluorescence quenching oc-curs in high concentration of metal ions.In order to solve this problem and detect trivalent metal ions accurately and quickly,we de-signed and synthesized a dual-fluorescent Schiff base probe E starting from 2-aminoanthracene with green fluorescence and 1-pyren-ecarboxaldehyde with blue fluorescence.The probe has no fluorescence itself,and shows green fluorescence with low concentration of trivalent metal ions,as well as blue fluorescence with high concentration of trivalent metal ions,which improves the situation by in-creasing the detection upper limit more than 2 times than traditional anthracene Schiff base probes.The probe E has the advantages of simple synthesis,good selectivity,high sensitivity,strong anti-interference ability,short response time and wide pH application range(5～10),which can realize the specific real-time detection of Fe3+,Al3+,Cr3+and Ce3+trivalent metal ions.Finally,the test strips are successfully prepared for convenient detection of trivalent metals.
NETL
NSTL
万方数据
维普
