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Updated: Feb 6, 2026

Sediment Core Extrusion Method at Millimeter Resolution Using a Calibrated, Threaded-rod
Published on: August 17, 2016
Selective separation and purification of β-estradiol from marine sediment using an optimized core-shell molecularly
Xiuping He1,2,3, Ziru Lian4, Jiangtao Wang1
1Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, P. R. China.
Abstract:
The core-shell molecularly imprinted polymers were optimized to provide reliable connections that allow molecularly imprinted polymers to be fixed on SiO2 surface for the efficient separation and purification of β-estradiol from marine sediment for the first time. To achieve the goal, different preparation methods were used and finally the polymer using 3-methacryloxypropyltrimethoxysilane as coupling agent exhibited the best result, which further confirmed that 3-methacryloxypropyltrimethoxysilane played an indispensable role on improving the inter-particle connections. An offline molecularly imprinted solid-phase extraction with high-performance liquid chromatography method was successfully applied to the isolation and enrichment of β-estradiol from marine sediment samples with high adsorption capacity, excellent clean-up efficiency, and great enrichment effect as well as high recovery (>90%) and accuracy (RSD < 8.5%, n = 3). It proved the successful grafting of molecularly imprinted polymers on SiO2 surface and the applicability of the offline molecularly imprinted solid-phase extraction method in the selective extraction and enrichment of β-estradiol from marine sediment.
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