文章基本信息

标题：放流水の衛生化学的研究(I) : 下水中のホルムアルデヒド定量法
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作者：斎藤功 ; 佐谷戸安好 ; 仲田典子等
期刊名称：Journal of Health Science
印刷版ISSN：1344-9702
电子版ISSN：1347-5207
出版年度：1964
卷号：10
期号：1
页码：37-41
DOI：10.1248/jhs1956.10.37
出版社：The Pharmaceutical Society of Japan
摘要：Nash reported that HCHO reacted with acetylacetone in the presence of excess ammonia to produce 3, 5-diacetyl-1, 4-dihydrolutidine (DDL). The joint commitee of Association of British Chemical Manufactures and Society for Analytical Chemistry proposed DDL-colorimetry as a standard for detection of HCHO in effluent water. The authors investigated further on DDL-colorimetry and obtained the following results. After 20 min. at 60° and pH 6.5 the coloration of DDL formed was maximum. The color of DDL-solution was stable for 72 hr. in a sealed container and able to be determined spectrophotometrically at 425 mμ when 1∼8 ppm. of HCHO was present. Coexistence of H₂S with HCHO in effluent water inhibited the formation of DDL, but the addition of zinc acetate solution at the time of distillation could remove this disturbance. By distillation repeated three times with addition of water 100 % of HCHO in effluent water was recoverable.