作者机构：
[王国平; 王姗姗] School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China;[周武艺; 王姗姗] College of Science, South China Agricultural University, Guangzhou 510642, China
通讯机构：
School of Chemistry and Chemical Engineering, University of South China, China
作者机构：
[张红英; 颜雪明] College of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China;[张红英] Hengyang Finace Economics and Industry Polytechnic, Hengyang 421001, China
通讯机构：
College of Chemistry and Chemical Engineering, University of South China, China
期刊：
JOURNAL OF AOAC INTERNATIONAL,2013年96(4):897-901 ISSN：1060-3271
通讯作者：
Peng, Tao
作者机构：
[Nie, Chang-Ming; Xie, Jie; Zhang, Qing-Jie] Univ South China, Dept Chem & Chem Engn, Hengyang 421001, Hunan, Peoples R China.;[Peng, Tao; Chen, Dong-Dong] Chinese Acad Inspect & Quarantine, Agroprod Safety Res Ctr, Beijing 100123, Peoples R China.;[Wang, Xiong] Clover Technol Grp Ltd, Beijing 100044, Peoples R China.;[Wang, Guo-Min] Chongqing Entry Exit Inspect & Quarantine Bur, Chongqing 400020, Peoples R China.
通讯机构：
[Peng, Tao] C;Chinese Acad Inspect & Quarantine, Agroprod Safety Res Ctr, Beijing 100123, Peoples R China.
摘要：
A method based on HPLC with UV detection was developed for the quantitative determination of chloramphenicol (CAP) residues in aquatic products. The samples were extracted with ethyl acetate–ammonium hydroxide (98 + 2, v/v), followed by a cleanup step using an immunoaffinity column. The analytes were determined by HPLC-UV. Optimal conditions for the extraction and cleanup procedures are described. The linear regression equation was y = 91.47x – 8.60 with R2 = 0.9998 (y = peak area and x = CAP concentration) and showed a good reproducibility. The LOQ was 0.25 μg/kg for determining CAP spiked in the aquatic products. The mean recoveries of CAP from fish and shrimp samples fortified at 0.25–1.0 μg/kg were 88.7–93.1 and 92.0–97.3%, respectively; the repeatability RSDs were less than 8.1%. It was concluded that the method is simple, highly sensitive, and low cost for quantitatively measuring CAP residues in aquatic products. Analyte identification was confirmed by HPLC/MS/MS analysis.
作者机构：
[陈大俊; 王孟] College of Materials Science and Engineering, Donghua University, Shanghai 201620, China;[王孟] School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
通讯机构：
[Chen, D.] C;College of Materials Science and Engineering, Donghua University, China
摘要：
Graphene with highly flaky state has been successfully prepared through chemical reduction process with the assistance of potassium chloride (KCl) to enhance the ionic strength in the aqueous solution. The microstructure of graphene sheets (GS) prepared in different solutions was compared and the effect of the KCl on the dispersion of GS was investigated. The buoyancy and repulsive force from the ions in the solution were effective to prevent the graphene sheets from agglomerating with each other. SEM and TEM images showed that the graphene reduced in KCl solution has kept the highly flaky state whereas the graphene reduced in pure water has curled and re-stacked together. As for supercapacitor electrode application, the highly flaky graphene showed much higher specific capacitance than the agglomerated one in 1 M Li2SO4 electrolyte. The more accessible surface of the graphene reduced with KCl assistance effectively enhanced the electric double layer capacitance.
作者机构：
[Chen, Rixiong; Zhao, Yubao; Qin, Jun; Zhang, Na; Wu, Fengjiao] Univ South China, Sch Chem & Chem Engn, Hengyang 421001, Peoples R China.;[Wu, Zhaofeng] Chinese Acad Sci, Fujian Inst Res Struct Matter, Fuzhou 350002, Peoples R China.
通讯机构：
[Zhao, Yubao] U;Univ South China, Sch Chem & Chem Engn, Hengyang 421001, Peoples R China.
会议名称：
International Conference on Energy, Environment and Sustainable Development (ICEESD 2011)
会议时间：
OCT 21-23, 2011
会议地点：
Shanghai Univ Elect Power, Shanghai, PEOPLES R CHINA
会议主办单位：
Shanghai Univ Elect Power
会议论文集名称：
Advanced Materials Research
关键词：
Hydrothermal Ion Exchange;Li4Ti5O12;Nanostructure;Titanate
摘要：
Spinel Li4Ti5O12 nanostructures were synthesized by hydrothermal treatment of hydrogen titanate at 150 oC and further calcinated at 400~750 oC. Their physicochemical features were characterized by TG/DSC, XRD and TEM techniques. Results showed that the Li4Ti5O12 phase with its crystal size of tens of nanometers was likely produced by the reaction between Li2TiO3 and orthorhombic TiO2 upon thermal treatment, and such reaction would be exothermic.
摘要：
Uranium is toxic to human body with mechanisms not fully understood. The structural and functional consequences of uranyl ions (UO22+) interacting with an axial mutant of cytochrome b5, His39Ser (cyt b5 H39S), were investigated by both spectroscopic and molecular modeling methods. Although slightly disturbs protein folding, UO22+ binding to cyt b5 H39S leads to a decrease of peroxidase activity. A uranyl binding site was further proposed in the heme-binding domain at Glu37 and Glu43. The impacts of UO22+ binding to cyt b5 H39S studied herein provide valuable insights into the toxicity mechanism of UO22+ towards membrane heme proteins.
期刊：
Journal of Materials Chemistry,2012年22(33):17019-17026 ISSN：0959-9428
通讯作者：
Shi, Wei-Qun
作者机构：
[Yuan, Li-Yong; Li, Zi-jie; Chai, Zhi-Fang; Shi, Wei-Qun; Lan, Jian-Hui; Feng, Yi-Xiao] Chinese Acad Sci, Inst High Energy Phys, Key Lab Nucl Analyt Tech, Beijing 100049, Peoples R China.;[Liu, Ya-Lan; Yuan, Ya-Li] Univ S China, Sch Chem & Chem Engn, Dept Analyt Chem, Hengyang 421001, Peoples R China.;[Zhao, Yu-Liang] Chinese Acad Sci, Inst High Energy Phys, Key Lab Biomed Effects Nanomat & Nanosafety, Beijing 100049, Peoples R China.
通讯机构：
[Shi, Wei-Qun] C;Chinese Acad Sci, Inst High Energy Phys, Key Lab Nucl Analyt Tech, Beijing 100049, Peoples R China.
摘要：
Due to the rapid development of the nuclear power industry, and consequently, the nuclear accident in Fukushima, much attention has been paid to novel materials for the efficient and rapid separation, removal and recovery of nuclear fuel associated radionuclides from aqueous solutions. Herein, a novel mesoporous material, dihydroimidazole functionalized SBA-15 (DIMS), was synthesized via a post-grafting method and used as an efficient sorbent for the extraction of U(VI) from aqueous solution. The synthesized material was found to possess highly ordered mesoporous structures with a large surface area and a uniform pore diameter. The sorption tests under various conditions demonstrated that the sorption of U(VI) by DIMS was fast, with an equilibrium time of less than 10 min. Additionally, the maximum sorption capacity reached 268 mg g−1 at pH 5.0 ± 0.1. Changes in the solid-to-liquid ratio (msorbent/Vsolution) did not have any remarkable effect on the U(VI) sorption. Besides, the sorbed U(VI) can be easily desorbed by 0.01 mol L−1 or more concentrated HNO3 solution, resulting in a U(VI) solution with a concentration factor of 300 at a solid–liquid ratio as low as 0.013 g L−1. The reclaimed sorbent can be reused with no obvious decrease in the sorption capacity. The selectivity of the DIMS sorbent for U(VI) ions was found to be fairly desirable by the sorption tests with the solutions containing a range of competing metal ions.
摘要：
A wireless sensing method for the measurement of gamma radiation dose has been developed based on the fact that gamma rays can initiate the polymerization of acrylamide, which causes an increase in solution viscosity that can be detected with a wireless magnetoelastic sensor. The magnetoelastic sensor is able to wirelessly detect the resonance frequency shifts of a magnetoelastic foil in response to changes in solution viscosity. There is a linear relationship between the resonance frequency shift and gamma radiation dose in the range of 0–50 Gy (under optimal conditions) with a detection limit of 0.25 Gy. This method has the advantage of providing real-time, continuous measurement in situ. The method has been used successfully to determine the gamma radiation dose in real exposure scenarios, with satisfactory results.
作者：
Wang, X. -F.*;Chen, Z. -Q.;Yang, P. -F.;Wang, Y. -F.
期刊：
Russian Journal of Coordination Chemistry,2012年38(12):733-737 ISSN：1070-3284
通讯作者：
Wang, X. -F.
作者机构：
[Wang, Y. -F.; Wang, X. -F.; Chen, Z. -Q.; Yang, P. -F.] Univ S China, Sch Chem & Chem Engn, Hengyang 421001, Peoples R China.
通讯机构：
[Wang, X. -F.] U;Univ S China, Sch Chem & Chem Engn, Hengyang 421001, Peoples R China.
关键词：
Pyridyl;Nitroxide;Oxyl;Cobalt Atom;Nitronyl
摘要：
A new cobalt coordination compound with nitronyl nitroxide and benzonate, Co(PyNIT)2(PhCOO)2(H2O)2, where PyNIT = 2-(p-pyridyl)-4,4′,5,5′-tetramethylimidazoline-1-oxyl-3-oxide, was synthesized and its X-ray diffraction analysis was carried out. The crystals were triclinic: a = 6.7749(4), b = 11.3472(7), c = 12.9066(8) Å, α = 87.906(1)°, β = 88.631(1)°, γ = 79.080(1)°, V = 973.45(10) Å3, space group P
$$
\bar 1
$$
, Z = 1, ρcalcd = 1.375 mg/m3, R = 0.0316. The environment of the cobalt atom is distorted octahedral formed by two oxygen atoms of two carboxylate groups of benzoate, two oxygen atoms of waters and two nitrogen atoms from two pyridyl nitronyl nitroxide molecules.
