| 1. | It reveals that 30 % acidulous grain alcohol is suitable , superior in the pigment dissolving
结果表明： 30 %酸性乙醇是美国地锦色素的较好提取剂。 |
| 2. | The structure of the extract was determined by ir , and the spectrogram is accordant to standard product
考察了提取剂的含水量、浸泡时间、原料性质和原料预处理方法等因素对提取的影响,获得了最佳提取条件。 |
| 3. | To the terrain like jiaolongzhang area , hoac should be less than 2 % to extract carbonates and nh4c1 should be less than 1 %
在类似于蛟龙掌半干旱黄土覆盖景观区，醋酸提取剂浓度应小于或等于2 ，氯化铵浓度小于或等于1 。 |
| 4. | Therefore , to use the weak signal extraction technique in overburden approportely , we should decide the extraction procedures after thoroughly test
因此，在覆盖区应用弱信息提取方法时，应结合景观和样品特征，采用实验方法确定合适的提取剂浓度。 |
| 5. | When extraction solvent acetic acid to alcohol ratio was 1 : 5 , solid to liquid ratio was 1 : 15 , 40 , 36hours , the bacteriostasis of chilli extraction was best
当提取剂中乙酸：乙醇为1 ： 5 ，固液比为1 : 15 ，提取温度为40 ，时间为36小时辣椒提取物的抑茵效果最佳。 |
| 6. | The metal content of extractants by different nh4c1 and ho ac extraction shows that a reasonable selection of solvent concentration is key to improve the effects of response to mineralizations
浓度提取试验结果表明，选择合适的提取剂浓度，可从根本上改善提取效果。 |
| 7. | Different from the existing cognition , the concentration of solvent should be much lower rather than higher when extracting the metals absorbed on clay minerals and bound to carbonates
与前人认识不同，进行可交换态(粘土吸附)和碳酸盐结合态弱信息提取时，不是提高提取剂浓度，而是降低浓度。 |
| 8. | The results showed that using the simple device , the reaction was finished in shorter time with higher rates and when it was used 95 % alcohol as picking up solvent , the percent of crude extractings from ginkgo biloba leaves was the highest
结果表明，简易装置所用时间较短、收率较高且操作简单方便；利用95 %乙醇作为提取剂在使用简易装置时，银杏叶粗提物得率最高。 |
| 9. | The method for determining avermectin ( avm ) in muscle of sturgeon ( a . schrenckif ) by high performance liquid chromatography with fluorescence detector was established . the homogenized muscle sample was extracted by acetonitrile , following centrifugation at 3000 g for 15 min
采用乙腈作为肌肉中蛋白沉淀剂和阿维菌素的提取剂，经碱性氧化铝spe柱纯化，蒸干和衍生化，用高效液相色谱( hplc )检测。 |
| 10. | Multi - residue analysis of 20 organophosphorous insecticides in vegetable was performed by db - 1701 capillary column coupled with gc - fpd detector in this study . ethyl acetate was used to extract the pesticides from vegetable samples using a homogenizer . the extract was separated , concentrated and detected by gc - fpd
通过四种提取方法的比较，确立了蔬菜中20种有机磷杀虫剂多残留的分析方法为：乙酸乙酯提取剂、高速匀浆法提取，经离心，浓缩， gc - fpd法测定。 |
