Integrated ion imprinted polymers-paper composites for selective and sensitive detection of Cd(II) ions.
Paper-based sensor is a new alternative technology to develop a portable, low-cost, and rapid analysis system in environmental chemistry. In this study, ion imprinted polymers (IIPs) using cadmium ions as the template were directly grafted on the surface of low-cost print paper based on the reversible addition-fragmentation chain transfer polymerization. It can be applied as a recognition element to selectively capture the target ions in the complex samples. The maximum adsorption capacity of IIPs composites was 155.2mgg-1and the imprinted factor was more than 3.0. Then, IIPs-paper platform could be also applied as a detection element for highly selective and sensitive detection of Cd(II) ions without complex sample pretreatment and expensive instrument, due to the selective recognition, formation of dithizone-cadmium complexes and light transmission ability. Under the optimized condition, the linear range was changed from 1 to 100ngmL-1and the limit of detection was 0.4ngmL-1. The results were in good agreement with the classic ICP-MS method. Furthermore, the proposed method can also be developed for detection of other heavy metals by designing of new IIPs.
State Key Laboratory of Environment Health (Incubation), Key Laboratory of Environment and Health, Ministry of Education, Key Laboratory of Environment and Health Wuhan, Ministry of Environmental Protection, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, #13 Hangkong Road, Hubei, 430030, Wuhan, China.
Kai
K
Huang
Hubei Center for Disease Control and Prevention, No. 6 ZhuoDao Quan North Road, 430079, Wuhan, China.
Ying
Y
Chen
State Key Laboratory of Environment Health (Incubation), Key Laboratory of Environment and Health, Ministry of Education, Key Laboratory of Environment and Health Wuhan, Ministry of Environmental Protection, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, #13 Hangkong Road, Hubei, 430030, Wuhan, China.
Feng
F
Zhou
Hubei Entry-Exit Inspection and Quarantine Bureau of PRC, No.588 Qingtaidadao Road, Hubei, 430022, Wuhan, China.
Xiaoya
X
Zhao
Hubei Center for Disease Control and Prevention, No. 6 ZhuoDao Quan North Road, 430079, Wuhan, China.
Jiafa
J
Liu
State Key Laboratory of Environment Health (Incubation), Key Laboratory of Environment and Health, Ministry of Education, Key Laboratory of Environment and Health Wuhan, Ministry of Environmental Protection, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, #13 Hangkong Road, Hubei, 430030, Wuhan, China.
Surong
S
Mei
State Key Laboratory of Environment Health (Incubation), Key Laboratory of Environment and Health, Ministry of Education, Key Laboratory of Environment and Health Wuhan, Ministry of Environmental Protection, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, #13 Hangkong Road, Hubei, 430030, Wuhan, China.
Yikai
Y
Zhou
State Key Laboratory of Environment Health (Incubation), Key Laboratory of Environment and Health, Ministry of Education, Key Laboratory of Environment and Health Wuhan, Ministry of Environmental Protection, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, #13 Hangkong Road, Hubei, 430030, Wuhan, China. Electronic address: jingtao@hust.edu.cn.
Tao
T
Jing
Cadmium ions; Colorimetric detection; Ion-imprinted polymers; Paper sensor; Water monitoring