真空赶酸系统在检测食品重金属含量中的应用及探讨  

Application and discussion of the vacuum acid-driven system for heavy metal detection in foods

作　　者：孙强[1] 曾婧[2] 杨爱莲[1] 余双[1] 黄卫东[1] 杨云芬[1] 吴礼俊[1] 

机构地区：[1]湖北省鄂州市疾病预防控制中心,湖北鄂州436099 [2]武汉科技大学,湖北武汉430065

出　　处：《中国食品卫生杂志》2016年第1期61-64,共4页Chinese Journal of Food Hygiene

基　　金：湖北省卫生和计划生育委员会科研项目资助(WJ2015MB269);鄂州市自然科学基金项目资助(2014ED11)

摘　　要：目的为提高样品的消化效率,在测定重金属含量时,探讨用高效快速的真空赶酸法来替代普通赶酸法的实际效果。方法取7种具有代表性的样品,每类样品均取3份,用石墨炉原子吸收法测定铅、镉、铜、铬和镍等5种元素的含量,分别用普通赶酸仪和真空赶酸仪赶酸。结果普通赶酸法和真空赶酸法所测得的结果差异无统计学意义（P〉0.05）,真空赶酸法处理的样品相对标准偏差（RSD）在0.04%-0.95%之间。结论较普通赶酸法,真空赶酸法能够有效的缩短样品消化时间,精密度和准确度均能达到理想效果,适用于样品中重金属的检测。Objective To improve the efficiency of digestion of the sample and explore the possibility to replace the traditional acid-driven with efficient vacuum acid-driven method for heavy metal detection. Methods 3 samples of7 typical categories were detected by graphite furnace atomic absorption method for lead,cadmium,copper,chromium and nickel,traditional acid-driven and vacuum acid-driven method were applied. Results There was no significant difference between two acid-driven methods,and the RSD of vacuum acid-driven method was 0. 04%-0. 95%. Conclusion Compared with traditional method,the vacuum acid-driven method could effectively reduce the digestion time as well as achieve better precision and accuracy,and it could be used for heavy metals detection.

关 键 词：真空赶酸仪 普通赶酸仪 重金属 石墨炉原子吸收法 检测 食品污染物 

分 类 号：R155.5[医药卫生—营养与食品卫生学]