Key Scientific Research Base of Museum Environment

Shanghai, China

Key Scientific Research Base of Museum Environment

Shanghai, China
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Wu Q.,East China University of Science and Technology | Van Y.,East China University of Science and Technology | Zhou H.,Key Scientific Research Base of Museum Environment | Wu L.M.,Key Scientific Research Base of Museum Environment | And 2 more authors.
Corrosion and Protection | Year: 2014

Because of the strong oxidizing property, ozone in the atmosphere has great disruptive effects on metal materials. The initial corrosion behaviors of carbon steel in the atmosphere with ozone were studied by setting contrast test in natural air. The corrosion appearance and products of carbon steel under different corrosion conditions were investigated by SEM/EDS and Raman, and the corrosion mechanism was studied preliminarily. The results showed that, compared with the corrosion of carbon steel in natural air. ozone can accelerate the corrosion of carbon steel, and with the extension of time, ozone can aggravate the degree of corrosion. The main corrosion products generated on the surface of carbon steel were γ-FeOOH and γ-Fe2O3. then γ-FeOOH dehydrated and bormed γ-Fe2O3 and α-Fe2O3. © 2014, Shanghai Research Institute of Materials. All rights reserved.


Xiu G.,East China University of Science and Technology | Wu X.,East China University of Science and Technology | Wang L.,East China University of Science and Technology | Wang F.,East China University of Science and Technology | And 6 more authors.
Indoor Air 2014 - 13th International Conference on Indoor Air Quality and Climate | Year: 2014

Particles have become an important factor in environmental quality of heritage preservation. Aiming to explore the air quality of the museum, this study conducted a series experiment in a museum in Shanghai, China. The result showed that the mass concentrations indoors of coarse particles, fine particles and ultrafine particles were about 20.50∼24.38μg/m, 23.39∼24.08μg/m and 16.02∼17.48μg/m, respectively. Over 97 % of particles were belonged to PM1 (diameter <1μm) and nearly 80 % were PM0.3 (diameter <0.3 μm). It was also found that cleaning and walking activities can greatly elevate the coarse particle concentration to about 8∼172 times greater. In addition, chemical constituents have been investigated in this study as well. SO4 2-, NO3-, NH4+ peaked at the particle size ranged from 0.32 to 0.56μm; Na+, Cldistributed uniformly; K+ appeared bi-modals with peaks in the size ranges of 0.32∼0.56μm and 3.2∼5.6μm, respectively. Mg+ concentrated in size range of 3.2∼5.6μm, and Ca+ in the particles with size range of 1.8∼3.2μm. Total organic acids distributed uniformly, acetate ion mass concentration was 1.238μg/m which was higher than formate ion and oxalate ion.


Yan Y.,East China University of Science and Technology | Zhang T.,East China University of Science and Technology | Zhou H.,Key Scientific Research Base of Museum Environment | Wu L.-m.,Key Scientific Research Base of Museum Environment | And 3 more authors.
Corrosion and Protection | Year: 2012

The corrosion behavior and mechanism of copper exposed to ozone at initial stage were investigated by using a quartz crystal microbalance (QCM). Through monitoring the frequency changes of copper-electrodeposited quartz crystal at different ozone concentrations and different temperatures, the corrosion kinetic curves were obtained. According to these curves, the corrosion rate and other related parameters were calculated and the corrosion mechanism involved was put forward. The results showed that, under specified corrosion conditions, the frequency change of the copper-electrodeposited quartz crystal decreased with the time. This indicated that the copper on the quartz crystal surface reacted with the corrosion medium to form corrosion products, which led to an increase of the surface mass of the quartz crystal and a decrease in the frequency. Ozone concentration and temperature can exercise an influence on the corrosion behavior of copper in various degrees. With the increase of ozone concentration and reaction temperature, the corrosion rate of copper gradually increased.


Fang L.-J.,East China University of Science and Technology | Yan Y.,East China University of Science and Technology | Zhou H.,Key Scientific Research Base of Museum Environment | Wu L.-M.,Key Scientific Research Base of Museum Environment | And 2 more authors.
Huadong Ligong Daxue Xuebao/Journal of East China University of Science and Technology | Year: 2015

The atmospheric corrosion behavior and law of bronze simulation materials exposed to museum simulation showcase were in situ monitored by quartz crystal microbalance (QCM). The corrosion products formed on surface of bronze simulation materials after 60 d were investigated by means of scanning electron microscope (SEM), energy dispersive spectrometer (EDS) and X-ray photoelectron spectroscopy (XPS). The results showed that adding light, increasing humidity and temperature accelerated the corrosion of bronze. The most serious corrosion of quartz crystal was achieved when exposed to ERCO LED 4000 K. After exposed to different lights for 60 d, the main corrosion products were Cu2O, CuO, SnO, SnO2 and the secondary corrosion products were copper carbonate, copper sulfate and copper sulfide, copper nitrate, copper nitrite and copper chloride. ©, YYYY, East China University of Science and Technology. All right reserved.


Wang Z.,East China University of Science and Technology | Xiu G.,East China University of Science and Technology | Zhan T.,East China University of Science and Technology | Xu F.,Key Scientific Research Base of Museum Environment | And 3 more authors.
Chinese Journal of Environmental Engineering | Year: 2013

The hollow fiber membrane bioreactor (HFMBR) was used to remove gaseous mixtures of benzene series. During biofilm colonization, the removal efficiency and elimination capacity (EC) of bioreactor reached around 80%, 225 g/(m3·h), respectively. The performance of the HFMBR for treating single and mixed xylene were investigated, and it was found that the HFMBR can effectively treat both single and mixed xylenes, and the removal efficiency was over 90%, which indicated that the inhibition effect between xylene species was weak. The removal capacity of single and mixed xylenes increased linearly when the inlet concentration was lower while the increase became slower at higher concentration. Through comparing degradation of mixed xylene with toluene, the inhibition effect between them was found. However, the inhabitation was still lower than the conventional bioreactor. The membrane bioreactor therefore has a promising prospect for application compared with conventional biofiltration process.


Zhang W.,East China University of Science and Technology | Zhang Y.,East China University of Science and Technology | Fang S.,East China University of Science and Technology | Luo X.,Key Scientific Research Base of Museum Environment | And 3 more authors.
Journal of Applied Polymer Science | Year: 2016

In this work, acrylate copolymer has been fabricated by graft copolymerization of acrylate monomer (EMA:EA is 70:30) with functional TiO2 nanoparticles, which was surface-modified by the silane coupling agent methacryloxy propyl trimethoxyl silane (KH570) to attach active ends. The structure and properties of the copolymer were characterized by FT-IR, FE-SEM, differential scanning calorimetry, thermogravimetric analysis, ultraviolet-visible spectra, and discoloration. Characterization revealed that functional TiO2 particles were grafted onto the chain of the acrylate copolymer and the acrylate copolymer showed excellent photo-oxidative stability and transparency. The acrylate copolymer was applied to protect and consolidate ancient ivory by surface coating without destruction of chemical structure. © 2016 Wiley Periodicals, Inc.


Xiu G.,East China University of Science and Technology | Wu X.,East China University of Science and Technology | Wang L.,East China University of Science and Technology | Chen Y.,East China University of Science and Technology | And 3 more authors.
Aerosol and Air Quality Research | Year: 2015

The size-fractionated particle number concentrations were monitored continuously in the different exhibition halls of an enclosed museum, in Shanghai. Particles in different size bins were collected to investigate the main chemical compositions. Results indicated that the mass concentrations of coarse particles, fine particles and ultrafine particles were in the range of 20.50-24.38 μg/m3, 23.39-24.08 μg/m3 and 16.02-17.48 μg/m3, respectively. In addition, the activities of cleaning and walking can greatly elevate the number concentration of coarse particles by a factor of about 8-172 times. The decay rates of size-fractionated particle increased with the enlarging particle diameter, ranging from 2 × 10-5 to 8 × 10-4 s-1. The mass concentration of SO42-, NO3-, NH4+ peaked within the particle size range of 0.32-0.56 μm. The ratios of [NO3-]/[SO42-] on the National Day and working day were 0.08 and 0.12, respectively. Comparatively, the peak concentrations of Na+, Cl-, K+, Mg2+ and Ca2+ occurred in the various size ranges. Total organic acids distributed uniformly, the acetate ion mass concentration was 1.238 μg/m3, which was higher than both formate ion and oxalate ion concentrations. The concentrations of OC and EC showed similar trends on both the National Day and working day, and greater OC/EC ratios were found in the particles within the size range less than 0.1 μm and larger than 1 μm. © Taiwan Association for Aerosol Research.


Wang L.,East China University of Science and Technology | Xiu G.,East China University of Science and Technology | Chen Y.,East China University of Science and Technology | Xu F.,Key Scientific Research Base of Museum Environment | And 2 more authors.
Aerosol and Air Quality Research | Year: 2015

The present study reported simultaneous measurements of particle number concentration (PNC), particle mass concentration, water soluble organic carbon (WSOC), organic carbon (OC), elemental carbon (EC), particulate morphology and main elemental properties. The measurements were conducted in a museum located in the downtown area of Shanghai. The impacts of storey, particle size and decorative flooring on particle characteristics inside museum were investigated. Size fractionated PNC in display halls belonging to the same storey exhibited similar daily variations. Particles within the range of 0.3–0.5 µm were identified as the most significant contributors to the overall size distribution measured, as ambient fine particles penetrated through the mechanical ventilation system. Multi-lognormal fitting OC concentrations can be assigned to the presence of tourists in the museum or originate from secondary OC formation. The latter can be estimated by comparing the relationship between OC and EC, as well as OC and WSOC. © Taiwan Association for Aerosol Research.


Yao J.,East China University of Science and Technology | Yan Y.,East China University of Science and Technology | Cai L.-K.,East China University of Science and Technology | Zhou H.,Key Scientific Research Base of Museum Environment | And 2 more authors.
Huadong Ligong Daxue Xuebao/Journal of East China University of Science and Technology | Year: 2015

The corrosion of AISI E52100 steel in 1-ethyl-3-methylimidazolium tetrafluoroborate ([emim]BF4) ionic liquid at different conditions were studied. Electrochemical tests (open-circuit potential, electrochemical impedance spectroscopy and potentiodynamic polarization curves) were performed to characterize the corrosion resistance of the steel samples in [emim]BF4 ionic liquid. Their morphology and chemical composition after corrosion were investigated using SEM coupled with EDX microanalysis and X-ray diffraction. Results showed that E52100 steel could be corroded in [emim]BF4, and the presence of oxygen, the increasing of temperature and water content could accelerate the corrosion. The water content had the most significant influence. The main corrosion products were iron fluoride and oxide. ©, 2015, East China University of Science and Technology. All right reserved.

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