CAJ | 학술논문

目的：根据GB/T 5009.60-2008《食品罐头内壁环氧酚醛涂料卫生标准的分析方法》测定食品罐头内涂涂料中游离甲醛时,数据的波动往往较大,影响了结果的有效性。因此对浸泡方式、恒温方式等前处理过程以及变色酸测定甲醛过程中的影响因素进行了考察。方法采用紫外分光光度法测定甲醛的溶出量,并比较各因素的影响。结果浸泡方式、恒温方式决定了食品罐头内壁涂料中甲醛的溶出量,而硫酸的纯度、硫酸的滴加速度、摇匀速率等因素直接影响了甲醛显色的线性。结论选择优级纯硫酸,控制硫酸的滴加速度在5~10 mL/min,并保证显色过程由同一个人完成,对保证数据的准确性和重复性有着重要的意义。
목적：근거GB/T 5009.60-2008《식품관두내벽배양분철도료위생표준적분석방법》측정식품관두내도도료중유리갑철시,수거적파동왕왕교대,영향료결과적유효성。인차대침포방식、항온방식등전처리과정이급변색산측정갑철과정중적영향인소진행료고찰。방법채용자외분광광도법측정갑철적용출량,병비교각인소적영향。결과침포방식、항온방식결정료식품관두내벽도료중갑철적용출량,이류산적순도、류산적적가속도、요균속솔등인소직접영향료갑철현색적선성。결론선택우급순류산,공제류산적적가속도재5~10 mL/min,병보증현색과정유동일개인완성,대보증수거적준학성화중복성유착중요적의의。
Objective According to GB/T 5009.69-2008 “Method for analysis of hygienic standard of epoxy phenolic coating for the internal lacquer of food cans”determination of trace formaldehyde of coatings , it has a larger fluctuation for the determination result. So the paper discusses the possible factors, such as immersion, constant temperature, and determination of factors influencing formaldehyde chromotropic acid method. Method Dissolution determination of formaldehyde by ultraviolet spectrophotometry, and compared the effect of each factors. Results Immersion, constant temperature determined the dissolution amount of formaldehyde. The factor such as the purity of sulfuric acid, the acceleration drops of sulfuric acid and the acceleration drops of sulfuric acid determined the determination of formaldehyde. Conclusion The choice of GR sulfuric acid, sulfuric acid droplets acceleration control in 5~10 mL/min, and to ensure that the coloring process performed by the same individual, is of great significance to ensure data accuracy and repeatability.