| 1. | The cinchonine gravimetric method for the determination of tungsten content
辛可宁重量法测定钨量 |
| 2. | Nickel base alloy powder - determination of tungsten content - cinchonine gravimetric method
辛可宁重量法测定钨量 |
| 3. | Methods for chemical analysis of ferrotungsten - the cinchonine gravimetric method for the determination of tungsten content
钨铁化学分析方法辛可宁重量法测定钨量 |
| 4. | Determination of molybdenum and tungsten content - sulfuric acid - phenylhydroxyacetic acid - cinchonine - potassium chlorate medium polarographic method
氯酸钾底液极谱法连续测定钼量和钨量 |
| 5. | Silicate rocks . determination of molybdenum and tungsten content . sulfuric acid - phenylhydroxyacetic acid - cinchonine - potassium chlorate medium polarographic method
硅酸盐岩石化学分析方法硫酸-苯羟乙酸-辛可宁-氯酸钾底液极谱法连续测定钼量和钨量 |
| 6. | Methods for chemical analysis of copper ores lead ores and zinc ores . determination of tungsten content . catalytic polarographic method in sulfuric acid - phenylhydroxy acetic acid - cinchonine - potassium chlorate system
铜矿石铅矿石和锌矿石化学分析方法硫酸-苯羟乙酸-宁-氯酸钾底液催化极谱法测定钨量 |
| 7. | Chiral quaternary ammonium salts were synthesized from cinchonine in cinchona alkaloids using chloromethylated polystyrene - polyethylene glycol , diethylene glycol , triethylene glycol and glycol as polymer - supported phase transfer catalysts , finsl products were characterized by ftir , elemental analysis , scanning electron microscopy , x - ray photoelectron spectroscopy ( xps )
摘要以金鸡纳生物碱中的辛可宁为原料，氯甲基化聚苯乙烯聚乙二醇、一缩二乙二醇、二缩三乙二醇、乙二醇等为载体合成了几种聚合物负载的手性季铵盐，并对它们的结构用红外光谱、元素分析、扫描电镜和x射线光电子能谱等测试手段进行了表徵。 |
