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Identification and degradation effect of two oil degrading bacteria screened from oily wastewater
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LIU Hong, GAO Peng fei, CONG Weiyi, Wang Mingchao, Wen Gang, Tian Zhen
Journal of Jilin Institute of Chemical Technology, 2018, 35(7): 21-25.
doi:10.16039/j.cnki.cn22-1249.2018.07.005
Two strains screened from oil wastewanter were identified using 9 physiological and biochemical tests,16s rDNA technology and degradation effect of petroleum hydrocarbons components by two single strain were studied. Results showed that the two strains were:L2-Ochrobactrum ciceri sp.and L3-Serratia marcescens sp. The effect of 2 strains of single bacteria on petroleum hydrocarbon degradation was very efficient,It revealed that petroleum hydrocarbons degradation rate of L4 was up to 97.37% and 98.98% after incubated in a rotary shaker at 30℃ and 120 r/min for 6 days and initial concentration of petroleum hydrocarbons was 4000 mg/L. Two kinds of bacteria on the first 3 days of the oil degradation rate was faster, and then enter the stationary phase, the growth rate was slow until zero.
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Fluorescence Method for Determination of Mercury(II) Ions Based on DNA and Monolayer Tungsten disulfide
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Yanan Guan, Hao Zhang, Xiaoshuang Li, Lili Lian, Xiyue Wang, Wenxiu Gao, Bo Zhu, Dawei Lou
Journal of Jilin Institute of Chemical Technology, 2018, 35(7): 36-38.
doi:10.16039/j.cnki.cn22-1249.2018.07.008
Fluorescence was used to detect mercury (II) ions (Hg2+). The feasibility of this method was discussed and the effect of tungsten disulfide (WS2) concentration on the experiment was studied. Different concentrations of Hg2+ ions were detected, followed by their selectivity, and whether other metal ions interfered with the detection of Hg2+ ions. The experimental results show that this method has the advantages of simple operation, low cost and good selectivity.
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Study on the Isolation of Protopanaxatriol Type Saponins based on D101C Macroporous Adsorption Resin
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Cheng Le-qin, Zhang Yue-wei, Li Yan-chun, Li Ling, Sun Shuo
Journal of Jilin Institute of Chemical Technology, 2018, 35(7): 48-52.
doi:10.16039/j.cnki.cn22-1249.2018.07.011
Protopanaxatriol group (PPT) is one of the two major tetracyclic triterpenoid saponins, responsible for anti-fatigue, anti-stress effects. This report studied the influence on adsorption of total PPT and PPD on D101C macroporous resin, by factors including concentration of total ginsenosides in stem and leaf, temperature and time of adsorption. In addition, influence of ethanol percentage was evaluated for desorption. Experimental results demonstrates that D101C microporous adsorption resin can adsorb 15 mg/mL of total ginsenosides at 15 ℃ after 14 hours, with PPT content further elevated to 86.8% from 27.2% and increased ratio of PPT to PPD (185:1 from 1.1:1) by desorption of 45% ethanol at 25 ℃ for 14 hours, indicating a better extraction and purification method of isolation and purification.
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Microwave synthesis of imidazole ionic liquids containing biphenyl group
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Yunxia Jiang, Bailing Xu, Lina Chen, Jie Xu
Journal of Jilin Institute of Chemical Technology, 2018, 35(7): 53-56.
doi:10.16039/j.cnki.cn22-1249.2018.07.012
Two imidazole inoic liquids containing biphenyl group [Cph-phC-Min]Br and [Cph-phC-Min-C]Br), were synthesized from 4,4'-biphenol, 1-bromododecane, 1,10-dibromodecane, N-methylimidazolium, and imidazole with microwave irradiation and the optimal conditions have been studied. The results showed that the yield of two products is 24.4% and 33.1% when N-alkyl imidazole and bromothane molar ratio 2:1 with microwave power is 80 W and reaction time 5 min, respectively. Compared with traditional methods, the reaction conditions in this study are easy to implement without inert gas protection, and the reaction time is shortened from 24 h to 5 min. The structure of ionic liquids containing biphenyl group was verified by IR and 1H NMR.
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Synthesis and crystal structure of Cu(C10H14N4)(C7H4O3)2·3H2O: A coordination polymer with fish bone-like 1D chain
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QU Xiao-shu, SHI Dan, LI Yan, YANG Yan-yan
Journal of Jilin Institute of Chemical Technology, 2018, 35(7): 57-60.
doi:10.16039/j.cnki.cn22-1249.2018.07.013
A novel coordination polymer ofCu(C10H14N4)(C7H4O3)2·3H2O (1) (C10H14N4 = 1,1'-(1,4-butanediyl) bis (imidazole) (bbi); C7H4O3= p-hydroxybenzoic acid) has been synthesized by convenient aqueous solution method and structurally characterized by single-crystal X-ray diffraction, powder X-ray diffraction, IR spectra and TG analysis. Single-crystal X-ray analysis reveals that the title compound is crystallized in the monoclinic system, space group R-3c with a = 20.614(19)?, b = 12.349(11)?, c = 12.003(11)?, α = 90°, β = 116.840(14)°, γ = 90°, V = 2726(4)?3, Z = 4, F(000) = 1892, S = 1.054, R1 = 0.1044, wR2 = 0.2062 [I>2σ(I)].
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The Quantitative Analysis of amaranth in candy by Using Graphene Quantum Dots as a Fluorescence-Quenching Probe
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JIN Li, WANG Ying, LIU Fang-tong, ZHANG Ke-shi, ZHANG Jian-po
Journal of Jilin Institute of Chemical Technology, 2018, 35(7): 61-65.
doi:10.16039/j.cnki.cn22-1249.2018.07.014
A fluorescence quenching method was used to quantitative analysis amaranth in candy based on the fluorescent quenching of graphene quantum dots. In order to obtain reliable results, effect of pH and reaction time on fluorescent quenching of graphene quantum dots by amaranth was studied. Under the optimized conditions, the fluorescence quenching of graphene quantum dots F0/F had a linear relationship with the concentration of amaranth between 0.5 - 3 μg/L. Temperature-dependent experiment, absorbance spectra and dynamic fluorescence quenching rate constant were used to discuss the quenching mechanism, all results indicated that it was a static quenching process based on the formation of complex between graphene quantum dots and amaranth through hydrogen bond. Particularly, this method was used to quantitative analysis candy sample, indicated that this method could be applied for practical food samples.
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Preparation and Electrochromic Property of Vanadium Substituted Phosphotungstate/Congo Red Nanocomposite
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FENG Su-yang, ZHONG Jian-qiang, TAN Jia-ning, QU Xiao-shu, YANG Yan-yan
Journal of Jilin Institute of Chemical Technology, 2018, 35(7): 75-78.
doi:10.16039/j.cnki.cn22-1249.2018.07.017
A electrochromic material based on vanadium substituted phosphotungstate (K7P2W16V2O62·18H2O)and congo red has been prepared by layer-by-layer (LbL) method, and characterized by UV-visible spectra, and cyclic voltammograms. It shows that the growth process of composite materials is uniform and stable. The composite film displays adjustable colors and undergoes transitions from red to maroon ,then to red, resulting in an optical contrast of 20.11 % and a coloration efficiency of 33 cm2 C-1. Furthermore, the switching times were 4.74 s for coloration, and 8.16 s for bleaching.
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Preparation of the functional magnetic diatomite and its application in Congo red adsorption
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LIAN Li-li, LV Jin-yi, XIU Chao, Zhang Xin-yang, LOU Da-wei
Journal of Jilin Institute of Chemical Technology, 2018, 35(7): 82-85.
doi:10.16039/j.cnki.cn22-1249.2018.07.019
A functional magnetic diatomite material was prepared by modification the Fe3O4 and FeSiO3 on the surface. It was characterized by XRD and infrared spectroscopy. Then the magnetic adsorbent (Fe3O4@D@FeSiO3) was used to adsorb Congo red from aqueous solutions. The ability of magnetic diatomite has been carried out as function of contact time, temperature, pH and concentration. The results indicated that the functional magnetic diatomite was simple in synthesis, low in cost. The functional magnetic diatomite is characterized of simple preparation, low-cost raw materiel, convenient magnetic separation, and exhibited excellent uptake capacity for Congo red.
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Hydrothermal Synthesis and crystal structure of Cu12Cl2(trz)8[HPMo12O40]]n
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YU Xiao-yang, LUO Ya-nan, QU Xiao-shu, YANG Yan-yan, REN Hong, JIN Li
Journal of Jilin Institute of Chemical Technology, 2018, 35(7): 86-89.
doi:10.16039/j.cnki.cn22-1249.2018.07.020
A new polyoxometalates compound, Cu12Cl2(trz)8[HPMo12O40]]n (1)(trz = 1,2,4-1H-triazole), has been synthesized under hydrothermal condition and characterized by elemental analysis, IR and single crystal X-ray diffraction. It crystallizes in the monolinic system, space group C2/m, a = 2.1618(4) nm, b = 2.16726(10) nm, c = 1.60124(15) nm, β = 117.090(11)°, V = 6.3207(14) nm3, Z = 4. In addition, the fluorescence property of compound 1 was also investigated.
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The Preliminary Purification of Polysaccharide from Rubus crategefolius Bunge. Root and Their Antioxidant Activity in vitro
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YANG Xiu-dong, ZHANG Pin-mei, ZHANG Yan, ZHANG Yang, CUI Hao, ZHOU Hong-li
Journal of Jilin Institute of Chemical Technology, 2018, 35(7): 90-94.
doi:10.16039/j.cnki.cn22-1249.2018.07.021
The crude polysaccharide of Rubus crategefolius Bunge. root was extract using water-extract and ethanol-precipitation method. It was further purified through de-protein and dialysis as well as DEAE-52 cellulose column chromatography. Two purified polysaccharide, RCP-1 and RCP-2 were obtained. The in vitro antioxidant activity of RCP-1 and RCP-2 was determined by DPPH, superoxide anion and ABTS scavenging assays. The results showed that the polysaccharide content of RCP-1 and RCP-2 were 80.66% and 82.15%, repectively. RCP-1 and PCP-2 had scavenging effect on DPPH, ABTS and superoxide anion. It also showed the concentration-dependent relationship. RCP-2 showed higher antioxidant activity that RCP-1. The results indicated that polysaccharide from Rubus crategefolius Bunge. root have a good antioxidant activity. It might be the material basis of the bioactivity of water soluble component of Rubus crategefolius Bunge. root.
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Synthesis of Porous biomass carbon/NiCo2S4 Composite for High Performance Supercapacitors
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XU Xing-xing, YU Di, WANG Hao, HAN Ming-xuan, JIANG Li-li
Journal of Jilin Institute of Chemical Technology, 2018, 35(7): 95-99.
doi:10.16039/j.cnki.cn22-1249.2018.07.022
In this work, Metaplexis japonica was used as raw material to prepare porous biomass carbon (AMJ) using KOH as activator. A facile two-step method is developed for growth of NiCo2S4 nanoparticles on AMJ, involving the growth of Ni-Co precursor by hydrothermal approach and subsequent conversion into NiCo2S4 nanoparticles through sulfidation process. The microstructure and morphologies of the resulting materials were characterized by XRD, SEM and N2 adsorption desorption analysis. The specific surface area of porous biomass carbon materials with tubular structure was 2831 m2/g, which was beneficial to charge accumulation between the electrolyte/electrode interfaces, and promote the diffusion and transport of electrolyte ions. Compared with pure NiCo2S4, the AMJ/NiCo2S4 electrode exhibited high specific capacitance of 1041.6 F/g at 5 mV/s, excellent rate capability and outstanding cycling stability.
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