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[求助]
求助一段化工分析方面的汉译英，谢谢
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含量的测定 称取样品于碘量瓶中，加氯化汞溶液溶解。然后准确加入溴标准溶液，沿瓶壁加入1：1的盐酸，于暗处放置。加入碘化钾溶液，盖上盖，用水封住瓶口，在暗处放置5min后用0.1 mol/L的硫酸钠标准溶液滴定至溶液呈浅黄色，加入淀粉指示剂继续滴定至无色，同时做空白实验。 |
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Assay Weigh samples into the iodine flask and dissolve it with mercuric chloride. Then accurately adding bromine standard solution. Add 1:1 hydrochloric acid to the flask along the inner-face and stand it in dark for 5min. Then titrated it with 0.1mol/L Sodium Sulfate standard solution until the solution turns to yellow. Then add the starch indicator and go on titrating with sodium sulfate standard solution until it turns to colourless. Also a blank test should be carried out at the same time. 应该还可以的 lZ供你参考了  |
3楼2008-07-31 21:55:56
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Determination of content The samples were weighed and put into iodine amount bottles and dissolved with mercuric chloride. After accurately adding the standard bromine, hydrochloride (volume ratio 1:1)was diversioned along the wall. With potassium iodide in, the bottles were covered and then sealed with water and placed in the dark for 5 min. They were titrated with 0.1 mol / L standard sodium solution. When the solution became light yellow, the starch indicator was added and titration went until it turn colorless. The same solution without samples was used as control.. |
2楼2008-07-31 20:22:18
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Determination of the Contents The sample was weighed and added into iodine amount bottle, then dissolved with mercuric chloride.After adding the standard bromine accurately , hydrochloride (volume ratio 1:1)was added along the inner wall of the flask and placed it in dark place for 5min. Titrated it with 0.1mol/L sodium sulfate standard solution until the solution showed yellow. Then starch indicator was added as titration was going on until the solution changed into colorless.Meanwhile, the blank test was accomplished. |
4楼2008-07-31 23:25:46
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Content determination Weight and put the sample into the iodine flask, and add the mercuric chloride solution to dissolve it. Then add the stander solution exactly, pour the hydrochloric acid (1:1) into the flask along the wall, and stand in darkness. And then add the potassium iodide solution and cover. After 5 minute’s standing in darkness, the solution is titrated to pale yellow with sodium sulfate stander. Add the starch indicator, and continue to titrate to colorless. And the blank assay is carried out at the same time. |
5楼2008-07-31 23:40:29