Methods The content of formaldehyde in rongalite was determined by sulfurous acid, magenta and acetylacetone spectrophotometry respectively.
方法采用品红亚硫酸法和乙酰丙酮法测定吊白块中甲醛含量，并计算样品中吊白块的含量。
Methods The content of formaldehyde in rongalite was determined by sulfurous acid, magenta and acetylacetone spectrophotometry respectively.
方法采用品红亚硫酸法和乙酰丙酮法测定吊白块中甲醛含量，并计算样品中吊白块的含量。
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