磷化液中NaNO_2浓度的快速测定  

Rapid Determination of NaNO_2 in Phosphating Solution

作　　者：丁志强[1] 

机构地区：[1]宝钢股份公司技术中心,上海201900

出　　处：《材料保护》2004年第11期60-62,共3页Materials Protection

摘　　要：　提出一种快速测定磷化液中NaNO2浓度的新方法———注射器法,并成功地应用于实际样品中NaNO2的测定。该方法简单、快速,测定范围宽,相对偏差小于2%,适用于溶液中NO-2浓度的测定,特别适用于生产现场磷化液中NaNO2的监控。Glass syringe method was advanced for rapid determination of NaNO_2 in phosphating solution. The new method was studied by using NaNO_2 solution as simulative phosphating solution, and successfully applied to determine the concentration of NaNO_2 in practical sample. The method is very simple, rapid, and suitable for determination of NaNO_2, especially for online control of nitrite, with wide determination range and relative standard deviation less than 2%.

关 键 词：磷化液 NaNO2 注射器法 快速测定 

分 类 号：TG174.4[金属学及工艺—金属表面处理]