| 1. | The ddtc photometric method for the determination of copper content
铜试剂光度法测定铜量 |
| 2. | The results obtained by this method are coincident with that by ddtc silver colourimetry
本法与ddtc银比色法所测结果相吻合。 |
| 3. | Pyrites and concentrate - determination of arsenic content - ag - ddtc spectrophotometric method
硫铁矿和硫精矿中砷含量的测定ag - ddtc分光光度法 |
| 4. | 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 |
| 5. | Study on the determination of trace cu by ddtc chelating resin preconcentration and thin layer resin phase spectrophotometry
螯合树脂预浓集薄层树脂相吸光光度法测定痕量铜的研究 |
| 6. | The objective of three usually used extract methods with ddtc , potassium and apdc were investigated contrast
摘要本文选用常用的三种ddtc 、碘化钾和apdc萃取分离方法进行比较研究。 |
| 7. | Chemical analysis methods for acid slay of cupola . determination of calcium oxide by ddtc separation process ang egta volumetric method
铸造化铁炉酸性炉渣化学分析方法. ddtc分离egta容量法测定氧化钙量 |
| 8. | Chemical analysis methods for acid slay of cupola . determination of magnesium oxide by ddtc separation process and edta volumetric method
铸造化铁炉酸性炉渣化学分析方法. ddtc分离edta容量法测定氧化镁量 |
