Studies of lead corrosion in acetic acid environments

Tétreault, Jean; Sirois, Pauline; Stamatopoulou, Eugénie

doi:10.1179/sic.1998.43.1.17

Cited by 68 publications

(36 citation statements)

References 11 publications

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“…The creation of an oak environment has been described elsewhere [11]. Polished lead coupons were enclosed within the oak environment at 50 % RH for 9 months in order to develop a measurable layer of corrosion products [14]. After corrosion, coupons were coated in the same manner as previously described [10].…”

Section: Resultsmentioning

confidence: 99%

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Further advances in lead carboxylate coatings: coating unprimed heritage lead

2016

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Further to the previously published work in this journal "Towards a new coating for heritage lead", a coating has been trialled with samples replicating aged lead artefacts. Lead was corroded in an oak environment to simulate storage or display in a wooden case then coated with ethanolic solutions of tetradecanoic and octadecanoic acid. X-ray diffraction and electrochemical impedance data suggests an better-quality coating is formed leading to improved corrosion resistance.

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Section: Resultsmentioning

confidence: 99%

“…Lead formate, a product of formic acid [15] reacting directly with surface lead oxide, is an important intermediate to the formation of lead carbonates such as hydrocerussite. The presence of both species shows that the lead surface is still corroding actively after 9 months [11,14].…”

Section: X-ray Diffractionmentioning

confidence: 99%

Further advances in lead carboxylate coatings: coating unprimed heritage lead

2016

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“…It should be noticed that the number of possible alteration compounds formed at the lead surface is very large and depends significantly on the acetic acid concentration and the time of exposure [18].…”

Section: Lead Alterationmentioning

confidence: 99%

“…In fact, values higher than 3000 mg m À3 were already detected inside museum showcases, when outside the buildings the concentration of the acetic acid in the atmosphere usually is between 0.1 and 100 mg m À3 , depending on the pollution degree [17]. It must be noted that the ''no observable adverse effect level'' of acetic acid on lead was determined to be 430 mg m À3 and, in consequence, was suggested that the pollutant concentration should be maintained below 100 mg m À3 [7,18], although this is a matter of dispute [19,20].…”

Section: Introductionmentioning

confidence: 98%

Comparison of adsorbent materials for acetic acid removal in showcases

Cruz

Pires

Carvalho

et al. 2008

Journal of Cultural Heritage

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“…The effect of the majority of volatile organic compounds (VOCs) emitted in typical storage conditions on materials in museum storage requires further research, but it is known that organic acids such as acetic and formic can cause damage to certain materials, such as lead (Tétreault et al, 1998(Tétreault et al, , 2003, shells, and calcareous materials (Tennent & Baird, 1985;Brokerhof & Van Bommel, 1996), and other materials (Daniels & Ward, 1982;Andrew et al, 1993;Grzywacz & Tennent, 1994;Hatchfield, 2002;Ryhl-Svendsen, 1999-2002Lavédrine, 2003;Grzywacz, 2006). In the past, priority has been given to the study of the stronger externally generated inorganic acid gases such as sulphur dioxide and nitrogen dioxide.…”

Section: Introductionmentioning

confidence: 99%

Colour measurement of acid-detector strips for the quantification of volatile organic acids in storage conditions

Hackney¹

2016

Studies in Conservation

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Acid-detector (A-D) strips were originally developed to assess the deterioration of acetate film stock, but they can also be used more generally within enclosures to detect volatile acidic pollution. A hand-held reflectance spectrophotometer was used to record the colour of individual strips in order to make consistent and reproducible readings. Calibration was carried out using the yellow-blue axis b*(D65) value in the CIELAB1976 system to measure the colour of A-D strips suspended in enclosed containers over solutions of acetic acid in combinations with glycerol to control the relative humidity (RH). A-D strips were found to be sensitive to changes in high RH (60-90%) but affected little by changes in lower RH or temperatures in the museum display and storage range. A-D strips can be used to establish the presence of volatile acids, record the indication of acid vapour concentration, explore conditions within a container, and to find sources of volatile acidity. They respond very quickly and several can be placed around an object. They therefore show promise for measuring slowly changing conditions, such as seasonal changes and the gradual accumulation of acidity in poorly ventilated containers and spaces. A-D strips proved useful in assessing air quality in storage and display enclosures. Examples and test results are presented. Wellsealed plywood transit frames and storage cases were found to be most polluted with volatile acids. Storage rooms with air filtration systems but filled with wooden objects had significantly reduced air quality.

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Studies of lead corrosion in acetic acid environments

Cited by 68 publications

References 11 publications

Further advances in lead carboxylate coatings: coating unprimed heritage lead

Further advances in lead carboxylate coatings: coating unprimed heritage lead

Comparison of adsorbent materials for acetic acid removal in showcases

Colour measurement of acid-detector strips for the quantification of volatile organic acids in storage conditions

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