An unusual efflorescence on Greek ceramics
An unusual efflorescence on Greek ceramics
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希腊陶瓷上不寻常的风化
DOI：
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发表时间：
1993
期刊：
影响因子：
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通讯作者：
M. Wypyski
中科院分区：
文献类型：
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作者：
G. Wheeler;M. Wypyski
在大都会艺术博物馆樱桃木陈列柜中展出的四件希腊陶瓷上发现了盐霜。这些盐被认为是一种常见的考古盐，如岩盐，或方解石--一种由樱桃木产生的乙酸蒸气与陶瓷孔隙中存在的钙和氯离子相互作用而产生的盐。X射线衍射、红外光谱和元素分析确定其中一种盐实际上是钙长石（CH 3CO 2CaCl·5 H2O），而另外三种盐是相对不常见的盐，铵光卤石（NH 4 MgCl 3·6 H2O）。有人建议，这种盐的结果从两个步骤的清洁程序，在过去的时间已被用于陶瓷：盐酸，然后氨。
AbstractSalt efflorescences were found on four Greek ceramics on exhibition in cherrywood display cases at the Metropolitan Museum of Art. These salts were thought to be either a common archaeological salt, such as halite, or calclacite—a salt which results from the interaction of acetic acid vapors produced by the cherrywood with calcium and chloride ions already present in pores of the ceramic. X-ray diffraction, infrared spectroscopy and elemental analyses determined that one of the salts was, in fact, calclacite (CH3CO2CaCl·5H2O) while the other three were a relatively uncommon salt, ammonium carnallite (NH4MgC13·6H2O). It is suggested that this salt results from a two-step cleaning procedure which at times in the past has been employed for ceramics: hydrochloric acid followed by ammonia.