Science & Technology Review >

2015 , Vol. 33 >Issue 6: 46 - 53

DOI: https://doi.org/10.3981/j.issn.1000-7857.2015.06.007

Spescial Issues

Evolution of indoor aerosol in Emperor Qin's Terra-cotta Museum and its influential factors

  • LI Hua ,
  • HU Tafeng ,
  • CAO Junji ,
  • JIA Wenting ,
  • MA Tao ,
  • WANG Chunyan
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  • 1. Key Scientific Research Base of Ancient Polychrome Pottery Conservation, SACH; Emperor Qin Shihuang's Mausoleum Site Museum, Xi'an 710600, China;
    2. University of Chinese Academy of Sciences, Beijing 100049, China;
    3. Key Lab of Aerosol Chemistry & Physics, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China;
    4. Institute of Global Environmental Change, Xi'an Jiaotong University, Xi'an 710049, China;
    5. Shaanxi Institute for the Preservation of Cultural Heritage, Xi'an 710075, China

Received date: 2015-01-23

  Revised date: 2015-02-15

  Online published: 2015-04-10

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Abstract

Long-term measurement results of indoor air quality (IAQ) from 1989 to 2013 inside Pit No.1, the largest display hall in Emperor Qin's Terra-cotta Museum (QTM) were used to evaluate the effectiveness of measures for conservation environment improvement of antiques. By comparing the results of sampling campaigns in 2013 with databases in 1989, 2004-2005, 2006-2007, and 2011, seasonal and inter-annual variations in microclimate and aerosol chemical compositions were incorporated in estimating the probable influences of management of surroundings, tourist flow, excavation and restoration task, and renovation and/or new construction work on IAQ in the QTM. Since the implementation of the environmental policies of 1990s, a significant decrease of indoor particulate matter mass for the QTM has been achieved. The mass concentrations of summer TSP decreased from 540.0 μg·m-3 in 1994 to 172.4 μg·m-3 in 2004, as well as the winter TSP decreased from 380.0 μg·m-3 in 1994 to 312.5 μg·m-3 in 2005. The mass concentration of summer PM2.5 decreased from 108.4 μg·m-3 in 2004 to 65.7 μg·m-3 in 2013, as well as the winter PM2.5 from 242.3 μg·m-3 in 2005 to 98.6 μg·m-3 in 2013. However, it is noted that potential hazards due to the secondary particulate acidic species in indoor air should still be considered to ensure the long-term preservation and conservation of the museum's artifact collection.

Key words： aerosol; indoor air quality; tourism planning; environmental policy; museum

Cite this article

LI Hua , HU Tafeng , CAO Junji , JIA Wenting , MA Tao , WANG Chunyan . Evolution of indoor aerosol in Emperor Qin's Terra-cotta Museum and its influential factors[J]. Science & Technology Review, 2015 , 33(6) : 46 -53 . DOI: 10.3981/j.issn.1000-7857.2015.06.007

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