Preparation of FeO@SW-MIL-101-NH for selective pre-concentration of chlorogenic acid metabolites in rat plasma, urine, and feces samples.

An innovative sandwich-structural Fe-based metal-organic framework magnetic material (FeO@SW-MIL-101-NH) was fabricated using a facile solvothermal method. The characteristic properties of the material were investigated by field emission scanning electron microscopy, transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy, Fourier transform infrared spectroscopy, X-ray powder diffraction, vibrating sample magnetometry, and Brunauer-Emmett-Teller measurements. FeO@SW-MIL-101-NH is associated with advantages, such as robust magnetic properties, high specific surface area, and satisfactory storage stability, as well as good selective recognition ability for chlorogenic acid (CA) and its metabolites via chelation, hydrogen bonding, and π-interaction.

A metal-organic framework@hydrogen-bond framework as a matrix for MALDI-TOF-MS analysis of small molecules.

A novel MOF@HOF composite that can serve as a matrix for analysis of small molecules by MALDI-TOF-MS was fabricated through a simple solvothermal method. Taking falvonoids as an example, this composite/matrix presents high desorption/ionization efficiency, low background interference, high salt tolerance, and satisfactory signal reproducibility for MALDI-TOF-MS analysis.

Debittering of lemon juice using surface molecularly imprinted polymers and the utilization of limonin.

In this work, surface molecularly imprinted polymers (SMIPs) were prepared as a specific sorbent to remove the limonin from the lemon juice for the first time, and then the MIPs containing limonin were directly made into a water-soluble gel to treat inflammation of mice. The resulting polymers were characterized by scanning electron microscopy, transmission electron microscopy and Fourier transform infrared spectrometer spectra. And the polymerization conditions and adsorption performances of the resultant nanomaterials were further investigated in detail.

Quality assessment of Penthorum chinense Pursh through multicomponent qualification and fingerprint, chemometric, and antihepatocarcinoma analyses.

An efficient method combined with fingerprint and chemometric analyses was developed to evaluate the quality of the traditional Chinese medicine plant Penthorum chinense Pursh. Nine samples were collected from different regions during different harvest periods, and 17 components in the form of extracts were simultaneously examined to assess quality by using high-performance liquid chromatography. The hepatoprotective effects of components were investigated by assessing the inhibition of SMMC-7721 cell growth.

[Adsorption and Desorption Characteristics of Endosulfan in Purple Soil].

In order to reveal the residual process of endosulfan in purple soil and protect soil ecological environment, the adsorption and desorption characteristics of endosulfan in purple soil were investigated, and effects of temperature, adsorbent amount, and initial pH of adsorption solution on the adsorption capacity were also examined by static adsorption and desorption experiments. The results showed that the adsorption kinetic process could be well described by the second-order kinetic equation with the initial rate constants of α-, β-endosulfan as 0. 157 and 0.

[Elution of endosulfan from contaminated soil by surfactants and their combination].

The elution efficiency and dynamic characteristic of endosulfan from the contaminated soil were studied using non-ionic surfactants and anionic/non-ionic surfactants in the presence or absence of Na2SiO3 with batch experiment and parallel desorption experiment. The results showed that the elution percents of alpha-, beta-endosulfan followed a decreasing order of Tween 80/SDS, Tween 80 and Triton X-100 in the absence of Na2SiO3, while that by Triton X-100/SDS at low concentration (100-500 mg x L(-1)) and high concentration (800-1000 mg x L(-1)) were lower and higher than those by the corresponding concentrations of Triton X-100, respectively. The elution efficiencies for four elution modes obviously increased in the presence of Na2SiO3, and the elution percents of alpha-, beta-endosulfan followed a decreasing order of Tween 80/SDS, Tween 80, Triton X-100/SDS and Triton X-100, and that of alpha-endosulfan were as 1.