自动电位滴定法测定保健食品中钙检出限的确定  

Determination of detection limit of calcium in health care products by automatic potentiometric titration

作　　者：秦晓娟[1] 李锦[1] 付志斌[1] 刘玉欣[1] 燕阔[1] 卢振敏[1] QIN Xiao-Juan;LI Jin;FU Zhi-Bin;LIU Yu-Xin;YAN Kuo;LU Zhen-Min(Hebei Province Center for Disease Control and Prevention,Shijiazhuang 050021,China)

机构地区：[1]河北省疾病预防控制中心,石家庄050021

出　　处：《食品安全质量检测学报》2021年第5期1711-1714,共4页Journal of Food Safety and Quality

摘　　要：目的对自动电位滴定法测定保健食品中钙的检出限进行确定。方法用自动电位滴定仪测定含钙保健食品中的钙含量,通过5种不同的方法计算检出限。结果自动电位滴定法测定保健食品中钙检出限的计算采用空白标准偏差法,得到检出限为0.002 g/100 g或0.002 g/100 mL。结论空白标准偏差法确定本方法的检出限较合理,可信度相对较高。Objective To determine the detection limit of calcium in health care products by automatic potentiometric titration.Methods The content of protein in health care products was determined by automatic potentiometric titration.The detection limit was calculated by 5 different methods.Results The blank standard deviation method was used to calculate the detection limit of calcium in health food by automatic potentiometric titration.The detection limit was 0.002 g/100 g or 0.002 g/100 mL.Conclusion The blank standard deviation method is more reasonable to determine the detection limit of this method and it has higher reliability.

关 键 词：自动电位滴定法 钙 检出限 

分 类 号：O657.1[理学—分析化学] TS218[理学—化学]