刘顿论文.doc

南通农业职业技术学院学生毕业论文刘顿:甲醛的性能、危害及残留测定毕业论文(设计) 课题名称水产品中甲醛残留量的测定专业及班级化工 3081 学号 0861036113 姓名刘顿指导老师蒋云霞实习从 2010 年11月25日至 11年6月25日共18周指导老师签字教研室主任签字年月日南通农业职业技术学院学生毕业论文刘顿:甲醛的性能、危害及残留测定甲醛的性能、危害及残留测定摘要甲醛是目前公认的致癌物,但由于用甲醛来处理水产品可改善水产品的外观和延长保存时间。但甲醛进入人体,轻者导致头晕头痛腹泻,重者致畸和致癌。严重影响人们的身体健康。对人体健康造成最大威胁的污染物当数建材中释放出的游离甲醛,它是一种具有强烈刺激性的挥发性有机化合物,会刺激眼睛和呼吸道,造成肺功能、肝功能、免疫功能异常, 是国际癌症研究机构确定的可疑致癌物。在这种情况下,系列国家标准应势出台,对有害物质限量和有害物质的测定方法作出了规定。本文介绍了甲醛残留量不同检测方法,并对试验条件进行了选择,为建立水产品中甲醛检测方法提供了可靠数据。卫生部推荐的方法是乙酰丙酮法,经大量试验,作者认为这种方法受干扰因素较多,灵敏度不高,经过比较,盐酸苯肼法测定水发产品中甲醛方法比较好。可用于定性及定量分析关键词:甲醛水发产品乙酰丙酮法盐酸苯肼法南通农业职业技术学院学生毕业论文刘顿:甲醛的性能、危害及残留测定 DETERMINATION OF FORMALDEHYDE RESIDUES INAQUATIC PARISON Abstract Formaldehyde iscurrently accepted carcinogens, but because with formaldehyde todeal with water hair product can improve water hair product appearance and prolongs the storage time. But formaldehyde enter human body, light person cause dizziness headache diarrhea, the person that weigh teratogenic and cancer. Seriously affect people's physical health. The biggest threat tohuman health posed the pollutants released inseveral building materials when the free formaldehyde, itisone kind has excitant strong, pounds may irritate eyes and respiratory, cause lung function, liver function, immune function abnormality, isthe international agency for research oncancer IARC1995 certain suspicious carcinogens. Inthis case, the series the national standards shall potential ofharmful material set limit e onstage, the determination method ofharmful substance and made aprovision. This paper discusses the different formaldehyde detection methods ofdetermination ofresidual e, and the test conditions for establishing water hair choice, product testing methods formaldehyde inprovides the reliable data. Health mended method isacetyl acetone method, through alot oftesting, the author thinks that this method ismore, the interference factors sensitivity isnot high, parison, determination ofwater benzene hydrazine hydrochloric ac