低压过渡金属离子色谱仪分析铬鞣液中铬含量  

Analysis of chromium Content of Chromium Solution by Low-pressure Transitive Metal Ion Chromatograph

作　　者：张新申[1] 郑筱梅[1] 韦庆 

机构地区：[1]四川联合大学皮革系

出　　处：《皮革科学与工程》1995年第4期21-28,共8页Leather Science and Engineering

摘　　要：本文利用Ｃｒ３＋能与草酸形成稳定的络合物，而且此络合物溶液的浓度与其吸光度呈线性关系的性质，在低压过渡金属离子色谱仪上，通过流动注射分析法测定了络合物的浓度，从而得知铬含量。将此法应用于制革样品分析并与常规方法对照，证明此方法是可行的，线性关系好，相关系数在０．９９９０以上，精密度高，变异系数为０．６０％，抗干扰能力强，准确度可满足制革生产过程中铬分析要求。According to the nature that Cr3+ can form a stable complex with oxalic acid,and the content of the complex solution presents linear relation with its light-absorbed degree,the concentration of the complex can be determined by flowing-injecting method in low-Pressure transitive metal ion chromatograph.The analysis results of some samples of chromium solution from tanneries with the method contrasting with the conventional method prove that the method is feasible and have good linear relation and high accuracy. The ralative coefficient is more than 0. 9990 and the coefficient of variation is 0. 60 percent Its accuracy can meet the demends of the chromiam content analysis in leathermaking process.

关 键 词：铬 分离 离子色谱 铬鞣液 

分 类 号：TS57[轻工技术与工程—皮革化学与工程]