Filter membrane clamping and collecting method for falling dust of museum of ancient ruined site

A collection method and museum technology, applied in the field of environmental monitoring of museum cultural relics preservation, can solve problems such as pollution, loss, and large volume of dust suppression disks, and achieve the effects of improving accuracy and standardization, eliminating secondary pollution, and reducing errors

CN104819872AInactive Publication Date: 2015-08-05INST OF EARTH ENVIRONMENT CHINESE ACAD OF SCI +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2015-08-05
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a filter membrane clamping and collecting method for falling dust of a museum of an ancient ruined site. The method comprises the following steps: tailoring a filter membrane into a standard filter membrane with a diameter of 47mm; putting the filter membrane made of a quartz material into a muffle furnace to burn and removing residual impurities; putting into a constant-temperature and constant-humidity box and standing for over 24 hours; weighing, putting into a falling dust filter membrane collecting device with an inner diameter of 47mm; horizontally or vertically putting into a site region and carrying out falling dust collection; ending sampling and directly taking down the filter membrane; putting the filter membrane into the constant-temperature and constant-humidity chamber and keeping the consistent temperature and constant humidity for over 24 hours; and carrying out weighing and various chemical analysis. By virtue of the filter membrane clamping and collecting method for falling dust, the filter membrane is directly taken down to be subjected to weighing and chemical analysis, so that secondary pollution in falling dust collection is reduced; the analysis error in the falling dust quantity and the chemical components is reduced; the falling dust monitoring accuracy and normativity for the site environment are improved; and the interference to cultural relics and tourists is reduced to the minimal extent.
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Description

technical field

[0001] The invention relates to the field of museum cultural relics preservation environment monitoring, in particular to a method for collecting filter clips for dust reduction in ruins museums. Background technique

[0002] Museum environmental safety requirements are high. Dust pollution in the museum environment is one of the main factors that cause dirt and corrosion to cultural relics. An effective monitoring method for museum environmental dust is sought to monitor museum environmental dust and then control it. It is extremely important for the long-term preservation of museum cultural relics.

[0003] The traditional dust collection in museums uses dust-falling disks. On the one hand, dust-falling disks are generally large in size and heavy in weight, which affects tourists’ viewing and more or less squeezes ruins and cultural relics; in addition, in the dust-falling analysis, the edge positioning of dust-falling disks is not accurate. It is not easy...

Examples

Embodiment 1

[0023] Analysis results of quartz membrane

[0024] Fallout Mass Settlement Flux

[0025] Sedimentation flux analysis of samples A microelectronic analytical balance (Sartorius Microbalance, ME5-F, Germany) with a sensitivity of 1 ug was used to weigh the quartz filter before and after sampling. The two sampling points for dustfall particulate matter samples are located in Pit No. 1 (indoor) and outdoor of Terracotta Warriors and Horses Museum of Qin Shihuang. The formula for calculating the mass settling flux of dust fall is as follows:

[0026] Component mass sedimentation flux = component mass concentration / (detection membrane area x exposure time) (1)

[0027] Calculated according to the above formula, the average indoor and outdoor sedimentation flux of dust during the sampling period is 8.7±3.3g m -2 ·yr -1 , 26.7±13.4g m -2 ·yr -1 . The outdoor and indoor mass concentration ranges are 2.6-16.2g·m-2·yr, respectively -1 and 5.3-48.8 m -2 ·yr -1 .

[0028] Che...

Embodiment 2

[0042] Analysis results of polycarbonate film

[0043] The microscopic appearance of the dust image 3 shown

[0044] Cut the middle position of the polycarbonate filter membrane with dust particles to about 10×10mm 2A small square piece of the sample was attached to the sample stage with carbon double-sided conductive tape, after being sprayed with gold by a JEOL JFC-1600 ion sputtering instrument, it was placed in an X-ray energy spectrometer (NORAN SYSTEM SIX, Thermo Electron Corporation, USA) Scanning Electron Microscope (SEM-EDX) (JSM-6460 LV, Japan Electron Optics Laboratory Co.Ltd., JP) carries out scanning electron microscopy and energy spectrum analysis, grasps the morphology of dust particles through electron microscope images, and combines EDX understands the chemical composition of dustfall particles and finds that indoor and outdoor dustfall particles are mainly composed of mineral particles, coal burning fly ash, soot aggregates and biomass particles.

[0045]...