油漆、油墨中Pb、Cd、Cr(Ⅲ)、Cr(Ⅵ)含量测定  

Analysis of Pb,Cd,Cr(Ⅲ),Cr(Ⅵ) Contents in Ink and Paints

作　　者：管艳艳[1] 赖志辉[1] 李晓燕[1] 王素娟[1] 张源和[1] 赵江涛[2] 周嘉欣[1] 

机构地区：[1]中山大学测试中心,广东广州510275 [2]通标标准技术服务有限公司,广东广州510665

出　　处：《分析测试技术与仪器》2015年第1期32-36,共5页Analysis and Testing Technology and Instruments

基　　金：国家自然科学基金资助项目(51072236)

摘　　要：建立了1种检测油漆、油墨中Pb、Cd、Cr（Ⅲ）、Cr（Ⅵ）含量的方法.用电感耦合等离子体发射光谱法（ICPAES）测定其中的铅、镉、总铬含量,方法的精密度小于6%,加标回收率为96.2%-100.2%.用二苯碳酰二肼分光光度法测定Cr（Ⅵ）,其方法的加标回收率为80.0%-90.0%.X射线光电子能谱法（XPS）分析油墨中铬的形态主要为三价.实验结果表明：油墨中Pb含量低于0.20 mg/kg,Cd含量低于0.04 mg/kg,Cr（Ⅵ）含量低于2.00 mg/kg;油漆中Cd含量低于6.00 mg/kg,均符合ASTM F963-2011美国玩具产品标准要求.8种油漆样品中,有6种铅含量超过90 mg/kg,有1种油漆Cr（Ⅵ）含量高达1.33×10^4mg/kg,不符合ASTM F963-2011标准.Pb、Cd、Cr（Ⅵ）检出限分别为0.04、0.2、2.0 mg/kg.A method for the determination of Pb, Cd, Cr （ Ⅲ ）, Cr （ Ⅵ ） in paints and ink is developed. The contents of Pb, Cr, Cd in Paints and ink were determined by inductively coupled plasma atomic emission spectrometry （ICP-AES）. The precision of the method was less than 6% and the recovery rates were between 96.2% - 100. 2%. The contents of Cr （Ⅵ） in paints and ink were determined by diphenylcarbazide spectrophotometry. The spiker recovery rate was between 80.0% -90.0%. X-ray photoelectron spectroscopy results showed that chromium in ink is the trivalent chromium. Experimental results showed that the elements in ink were ： Pb〈0.2 mg/kg, Cd〈0.04 mg/kg, Cr（Ⅵ） 〈2.00 mg/kg. All contents of cadmium in paints were less than 6.00 mg/kg which accorded with ASTM F963-2011, the Ameriscan Standard for toy products. The contents of lead in 6 paints were more than 90 mg/kg. The content of Cr（Ⅵ） in one paint was up to 1.33×10^4 mg/kg not accorded with that of ASTM F963-2011. The detection limits of Pb,Cd,Cr（Ⅵ） were 0. 04,0. 2,2. 0 mg/Kg.

关 键 词：电感耦合等离子体发射光谱 二苯碳酰二肼分光光度法 X射线光电子能谱 油漆 油墨 

分 类 号：O657.3[理学—分析化学]