CAJ | 학술논문

为建立一个新的测定化妆品中铅的分光光度法,在0.24 mol/L的磷酸介质中,铅与DBM-MSA{3-[(2-磺酸基苯)偶氮]- 6-[2,6-二溴-4-甲基苯)偶氮]- 4,5-二羟基-2,7-萘二磺酸}反应形成1∶ 2的蓝色配合物,在波长630 nm处比色测定.结果表明,铅量在0～1 μg/mL 范围内符合比耳定律;样品测定的相对标准偏差为1.24%～4.59%,标准加入回收率为95.0%～107.0%,化妆品中共存物质不干扰测定,方法简便,选择性好,结果满意.
위건립일개신적측정화장품중연적분광광도법,재0.24 mol/L적린산개질중,연여DBM-MSA{3-[(2-광산기분)우담]- 6-[2,6-이추-4-갑기분)우담]- 4,5-이간기-2,7-내이광산}반응형성1∶ 2적람색배합물,재파장630 nm처비색측정.결과표명,연량재0～1 μg/mL 범위내부합비이정률;양품측정적상대표준편차위1.24%～4.59%,표준가입회수솔위95.0%～107.0%,화장품중공존물질불간우측정,방법간편,선택성호,결과만의.
To establish a new method for the determination of lead in cosmetics with dibromo-p-methyl-methylsulfonazo,in 0.24 mol/L H_3PO_4 medium,lead reacts with the reagent to form a blue complex,which has a composition of 1∶2 and could be measured at wavelength 630nm by spectrophotometry.The results show that Beer's law is obeyed for 0～1 μg/mL of lead in of solution.The relative standard deviation for determination of samples were found in the range of 1.24%～4.59%.The standard addition recovery of Lead is between 95.0%～107.0%.No interference was observed from coexistent substances in cosmetics.It concludes the method is simple,good selectivity and satisfied with determination lead in cosmetics.