氨基酸纸色谱实验的改进
Health Vocational Education(2014)
Abstract
1 材料
1.1 器材
培养皿一套、表面皿(或酒精瓶内盖)、中速色谱滤纸、毛细吸管、显色用喷雾器、电吹风、电烤箱.
1.2 试剂
0.2 mol/L磷酸氢二钠溶液(50 ml):精密称取1.42 g磷酸氢二钠固体,用蒸馏水溶于小烧杯中,再转移到50 ml容量瓶中定容.
0.2 mol/L磷酸二氢钠溶液(50 ml):精密称取1.2 g磷酸二氢钠固体,用蒸馏水溶于小烧杯中,再转移到50 ml容量瓶中定容.
pH 7.4的磷酸缓冲溶液:取0.2 mol/L磷酸氢二钠溶液40.5 ml与0.2 mol/L磷酸二氢钠溶液9.5 ml混匀,加蒸馏水至1 000ml.
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