Mineralogical characterization of clays used in manufacturing of traditional ceramic products is critical for guarantee the quality of the final product, but also for assessing the environmental impact of the industrial process in terms of atmospheric emissions. In fact, the presence of impurities even in low-level concentrations can have a big impact. So, it is very important to carry out an accurate mineral quantification of those minerals which are related to carbon dioxide and acid emissions (hydrogen fluoride, hydrogen chloride or sulfur dioxide). The development of hyphenated techniques coupling thermal analysis equipment with mass spectrometry and Fourier-transform infrared spectroscopy provides more valuable information and lower limit quantification than other primary techniques, such as X-ray diffraction or infrared spectroscopy. The main objective of this work is to develop an analytical procedure using evolved gas analysis to identify and quantify minerals such as chlorides, sulfides, carbonaceous materials and minor clay minerals. In addition to this, the study includes the analysis of acid emissions during the ceramic firing treatment even if they are present at low quantitative levels. This methodology was applied to reference materials so that it allows the identification of sulfur, chlorine, fluorine and carbonaceous compounds in concentrations lower than 1%.

中文翻译：

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演化气体分析技术在粘土微量矿物质形态分析中的应用

用于制造传统陶瓷产品的粘土的矿物学表征对于保证最终产品的质量至关重要，对于评估工业过程对大气排放的环境影响也至关重要。实际上，即使存在低浓度的杂质也会产生很大的影响。因此，对与二氧化碳和酸排放物有关的矿物（氟化氢，氯化氢或二氧化硫）进行准确的矿物定量非常重要。与X射线衍射或红外光谱等其他主要技术相比，将热分析设备与质谱仪和傅里叶变换红外光谱相结合的联用技术的发展提供了更多有价值的信息，并降低了定量限。这项工作的主要目的是开发一种使用析出气体分析的分析程序，以鉴定和定量矿物，例如氯化物，硫化物，碳质材料和次要粘土矿物。除此之外，该研究还包括对陶瓷烧成过程中酸排放的分析，即使这些酸的含量较低。该方法已应用于参考材料，因此可以鉴定浓度低于1％的硫，氯，氟和碳质化合物。该研究包括对陶瓷烧成过程中酸排放的分析，即使这些酸的含量较低。该方法已应用于参考材料，因此可以鉴定浓度低于1％的硫，氯，氟和碳质化合物。该研究包括对陶瓷烧成过程中酸排放的分析，即使这些酸的含量较低。该方法已应用于参考材料，因此可以鉴定浓度低于1％的硫，氯，氟和碳质化合物。