| 1. | The ddtc photometric method for the determination of copper content 铜试剂光度法测定铜量 |
| 2. | The cupral spectrophotometric method for the determination of copper content 铜试剂分光光度法测定铜量 |
| 3. | Determination of copper content in cadmium - neoluproinelead - base photometric method 铜试剂铅盐分光光度法 |
| 4. | Determination of copper content - diethyldithiocarbamate spectrophotometric method 铜试剂分光光度法测定铜量 |
| 5. | The neocuproine - extraction photometric method for the determination of copper content 新铜试剂萃取光度法测定铜量 |
| 6. | Thallium - determination of copper content - neocuproine - chloroform extraction photometric method 三氯甲烷萃取铜试剂吸光光度法 |
| 7. | Methods for chemical analysis of ferrotitanium - the ddtc photometric method for the determination of copper content 钛铁化学分析方法铜试剂光度法测定铜量 |
| 8. | Methods for chemical analysis of tungsten - the neocuproine photometric method for the determination of copper content 钨化学分析方法新铜试剂光度法测定铜量 |
| 9. | Methods for chemical analysis of molybdenum - the neocuproin photometric method for the determination of copper content 钼化学分析方法新铜试剂光度法测定铜量 |
| 10. | Methods for chemical analysis of chromium metal - the cupral spectrophotometric method for the determination of copper content 金属铬化学分析方法铜试剂分光光度法测定铜量 |