Jina Ding1,2, Dongwei Zhang1,2, Yang Liu1,2, Xuejia Zhan1,2, Yitong Lu1,2, Pei Zhou1,2, Dan Zhang1,2. 1. School of Agriculture and Biology, Shanghai Jiaotong University, Shanghai 200240, China. 2. Key Laboratory of Urban Agriculture, Ministry of Agriculture and Rural Affairs of the People's Republic of China, Shanghai Jiao Tong University, Shanghai 200240, China.
Abstract
A new double-shelled carbon nanocages material was synthesized and developed an aptasensor for determining Pb2+ in aqueous solution. Herein, nanoporous carbon materials derived from core-shell zeolitic imidazolate frameworks (ZIFs) demonstrated excellent electrochemical activity, stability, and high specificity surface area, consequently resulting in the strong binding with aptamers. The aptamer strands would be induced to form G-quadruplex structure when Pb2+ was introduced. Under optimal conditions, the aptasensor exhibited a good linear relationship of Pb2+ concentration ranging from 0.1 to 10 μg L-1 with the detection limits of 0.096 μg L-1. The feasibility was proved by detecting Pb2+ in spiked water samples and polluted soil digestion solution. The proposed aptasensor showed excellent selectivity and reproducibility, indicating promising applications in environmental monitoring.
A new double-shelled carbonnanocages material was synthesized and developed an aptasensor for determining n class="Chemical">Pb2+ in aqueous solution. Herein, nanoporous carbon materials derived from core-shell zeolitic imidazolate frameworks (ZIFs) demonstrated excellent electrochemical activity, stability, and high specificity surface area, consequently resulting in the strong binding with aptamers. The aptamer strands would be induced to form G-quadruplex structure when Pb2+ was introduced. Under optimal conditions, the aptasensor exhibited a good linear relationship of Pb2+concentration ranging from 0.1 to 10 μg L-1 with the detection limits of 0.096 μg L-1. The feasibility was proved by detecting Pb2+ in spiked water samples and polluted soil digestion solution. The proposed aptasensor showed excellent selectivity and reproducibility, indicating promising applications in environmental monitoring.
Authors: Hang Zhou; Wen-Tao Yang; Xin Zhou; Li Liu; Jiao-Feng Gu; Wen-Lei Wang; Jia-Ling Zou; Tao Tian; Pei-Qin Peng; Bo-Han Liao Journal: Int J Environ Res Public Health Date: 2016-03-04 Impact factor: 3.390