食品科学 ›› 2009, Vol. 30 ›› Issue (12): 172-175.doi: 10.7506/spkx1002-6630-200912036

• 分析检测 • 上一篇    下一篇

乙酰丙酮分光光度法测定塑料中甲醛和六亚甲基四胺在食品模拟物中的迁移量

朱晓艳,陈少鸿,刘在美,曹国洲   

  1. 宁波出入境检验检疫局
  • 收稿日期:2008-08-19 修回日期:2008-11-12 出版日期:2009-06-15 发布日期:2010-12-29
  • 通讯作者: 朱晓艳 E-mail:zhuxy@nbciq.gov.cn
  • 基金资助:

    国家认证认可监督管理委员会标准制(修)订计划项目(2006B495)

Acetylacetone Spectrophotometric Determination of Migration of Formaldehyde and Hexamethylenetetramine from Plastics into Food Simulants

ZHU Xiao-yan,CHEN Shao-hong,LIU Zai-mei,CAO Guo-zhou   

  1. (Ningbo Entry-Exit Inspection and Quarantine Bureau, Ningbo 315012, China)
  • Received:2008-08-19 Revised:2008-11-12 Online:2009-06-15 Published:2010-12-29
  • Contact: ZHU Xiao-yan, E-mail:zhuxy@nbciq.gov.cn

摘要:

考察乙酰丙酮与甲醛的显色反应及六亚甲基四胺(HMTA)转化成甲醛的反应条件的影响并进行优化,建立乙酰丙酮分光光度法测定塑料中甲醛和HMTA 在乙酸溶液中迁移量(以甲醛计)的方法。结果表明:线性范围可达0~15mg/L,检出限为0.09mg/L,HMTA 对甲醛的平均转化率为98.3%~100%,甲醛在HMTA 溶液中的回收率为99.5%~101%。由9 家实验室对水平为9.93mg/L(含HMTA)和7.01mg/L(不含HMTA)的样品进行协同实验,其重复性限r 分别为0.707、0.112mg/L,再现性限R 分别为2.094、1.516mg/L。

关键词: 甲醛, 六亚甲基四胺, 乙酰丙酮, 分光光度法, 塑料, 迁移

Abstract:

The conditions for color reaction of acetylacetone and formaldehyde and conversion of hexamethylenetetramine (HMTA) to formaldehyde were optimized. An acetylacetone spectrophotometric method was proposed for the determination of migration of formaldehyde and HMTA from plastic to acetic acid solution. The linear range of calibration curve was 0-15 mg/L, and the detection limit for the method was 0.09 mg/L. The conversion rate of HMTA to formaldehyde was 98.3%-100% and the recovery for formaldehyde in HMTA solution was 99.5%-101%. A collaborative trial was carried out by nine laboratories to samples with formaldehyde levels of 9.93 mg/L (containing HMTA) and 7.01 mg/L (without HMTA). The repeatability limits were 0.707 and 0.112 mg/L and the reproducibility limits were 2.094 and 1.516 mg/L, respectively.

Key words: formaldehyde, hexamethylenetetramine, acetylacetone, spectrophotometry, plastics, migration

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