废胶片中银的检测方法研究  

Silver test method research in the Waste film

作　　者：刘永玉 LIU Yong-yu(College of Chemistry and Chemical Engineering,Xiamen University,Xiamen 361100,China;Fujian Zijin Testing Technology of Mining&metallurgy Co.Ltd,Xiamen 361100,China)

机构地区：[1]厦门大学化学化工学院 [2]福建紫金矿冶测试技术有限公司

出　　处：《世界有色金属》2019年第19期247-250,共4页World Nonferrous Metals

基　　金：国家自然科学基金(21703187);厦门大学校长基金(20720170102)

摘　　要：卤化银感光材料是用银量最大的领域之一,而胶卷中卤化银的用量占25%,因此准确、快速、无污染的回收胶卷中银对资源循环利用及环境保护具有重大的意义。本文进行了王水溶样法、焙烧后王水溶样法,硫酸硝酸混酸法及火试金法四种方法,并对硫酸硝酸混酸法进行了方法改进,结果可知硫酸硝酸混酸法及火试金法两个方法检测结果无显著性差异,检测方法可靠。实验对硫酸硝酸混酸法进行了加标回收及精密度实验,回收率在97.5%~100.4%之间,精密度小于1.50%。Silver halide photographic materials are one of the largest silver fields,And the amount of silver halide in the film is 25%,Therefore,accurate,rapid and pollution-free recovery of silver film is of great significance to the recycling of resources and environmental protection.This article has carried on aqua regia dissolving sample method、aqua regia dissolving sample method After roasting、Sulfuric acid and nitric acid mixed acid method、Fire assay,then we improve the method of Sulfuric acid and nitric acid mixed acid method.The results showed that there was no significant difference between the back two methods,detection method is Reliable.The Standard addition recovery rate and precision for Sulfuric acid and nitric acid mixed acid method were studied by experiments,The Standard addition recovery rate test is between 97.5%to 100.4%,the precision is less than 1.50%.

关 键 词：废胶片 银 检测 

分 类 号：X705[环境科学与工程—环境工程]