Assessment of the impact of particulate dry deposition on soiling of indoor cultural heritage objects found in churches and museums/libraries
Assessment of the impact of particulate dry deposition on soiling of indoor cultural heritage objects found in churches and museums/libraries
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DOI：
10.1016/j.culher.2019.02.017
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发表时间：
2019-09-01
影响因子：
3.1
通讯作者：
Lazaridis, Mihalis
中科院分区：
文献类型：
--
作者：
Chatoutsidou, Sofia Eirini;Lazaridis, Mihalis
在本研究中的影响，从室内干沉降的尺寸分辨颗粒物进行了研究。出版的数据从巴洛克图书馆在布拉格，两个中世纪教堂在塞浦路斯和两个历史教堂在波兰在本研究中使用。从这些研究的文献中获得的沉积速度v（d）的值被用来检查保存室内收藏品的颗粒大小和室内浓度的比较影响。沉积颗粒的数量估计在不同的颗粒尺寸的情况下，其中数量浓度数据是可用的，而对室内表面的质量通量从颗粒质量尺寸分布。此外，剂量响应函数的实施，以调查可接受的水平污染的美学影响，从室内颗粒物的沉积。结果表明，较高数量的沉积颗粒被发现在较低的部分的尺寸分布（细颗粒），而，获得相反的行为的质量通量，其中较高的通量获得粗颗粒。这些发现与不同粒径和相应浓度的室内颗粒物动力学直接相关。特别是，更高的积累在室内表面上的细颗粒与这些颗粒的相对效果，沉积在垂直方向的表面，而大量的沉积质量所产生的粗颗粒是由于对水平表面的潜在影响。此外，剂量响应函数显示污染常数与PM10浓度之间存在比例关系，以浓度升高为特征的室内场地对室内艺术品的保存风险更大。本研究的结果强调了对室内颗粒物的粒径分布和相应的化学成分进行共同评估的必要性，以便更好地分析效果。由于干颗粒沉积。(C)2019 Elsevier Masson SAS。All rights reserved.
The impact from the indoor dry deposition of size-resolved particles was investigated in the present study. Published data from a baroque library in Prague, two medieval churches in Cyprus and two historical churches in Poland were used in the present study. Values of the deposition velocity v(d) obtained in literature from these studies were used to examine the comparative impact on the preservation of indoor collections in relation to particle size and indoor concentrations. The number of deposited particles was estimated at different particle sizes for cases where number concentration data were available whilst the mass flux towards indoor surfaces was obtained from the particle mass size distribution. Additionally, a dose-response function was implemented to investigate the acceptable level of soiling regarding the aesthetic impact from the deposition of indoor particulate matter. The results demonstrate that higher number of deposited particles are found in the lower part of the size distribution (fine particles), whereas, an opposite behavior was obtained for the mass flux where higher flux was obtained for coarse particles. These findings were directly associated with indoor particle dynamics at the different sizes and the corresponding concentrations. Particularly, higher accumulation on indoor surfaces by fine particles was linked with a relative effect of these particles for deposition on vertical-oriented surfaces whereas the large amount of deposited mass arising from coarse particles was attributed to a potential impact on horizontal surfaces. Furthermore, the dose-response function showed a proportional relationship between the soiling constant and the PM10 concentration, with indoor sites characterized by elevated concentrations being more risky for the preservation of indoor works of art. In general, the results of the present study highlight the necessity of a common assessment of the indoor particle size distribution and the corresponding chemical composition for better analysis of the effect due to dry particle deposition. (C) 2019 Elsevier Masson SAS. All rights reserved.