The chromatropic acid and magenta sulphurous acid methods for the formaldehyde determined by spectrophotometry are studied in this paper, and the two methods are compared.
本文研究了分光光度法测定甲醛中的变色酸法和品红亚硫酸法，同时对这两种方法进行了比较。
The chromatropic acid and magenta sulphurous acid methods for the formaldehyde determined by spectrophotometry are studied in this paper, and the two methods are compared.
本文研究了分光光度法测定甲醛中的变色酸法和品红亚硫酸法，同时对这两种方法进行了比较。
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