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采用二氧化碳重量法测定瓦楞子不同火候煅制品碳酸钙的分解率。建立了简易判断贝壳类煅制品碳酸钙是否发生分解的水浸液ｐＨ值测定法。并对６城市贝壳类煅制品外观与内在质量进行了考察和比较。
Carbon dioxide gravimetric method was used to determine the decomposition rate of CaCO3 in different calcined products. Established a simple method to determine the pH value of carbonated calcined carbonated water. The appearance and intrinsic quality of shelled products in 6 cities were investigated and compared.