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（英译汉）麻烦通顺合理的帮我翻译下这段（急）
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•NO gas was generated by slowly dropping a 2 mol L-1 H2SO4 into a glass flask containing saturated NaNO2 solution, •NO being formed in this disproportional reaction. The gas generated was forced to twice bubble in a 30% NaOH solution and once in water in order to trap any NO2 formed as a result of oxidation of •NO from traces of oxygen. Before the addition of H2SO4, all apparatus was degassed meticulously with nitrogen for 30 min to exclude O2, as •NO is rapidly destroyed by O2. To produce a saturated •NO solution (at 20℃, NO≈1.8 mmol L-1), 10 mL deoxygenated distilled water was bubbled with pure •NO gas for 30 min and kept under •NO atmosphere until use. •NO gas is toxic at concentration higher than 100ppm, so the bubbling procedure was carried out in a fume hood. •NO standard solutions were prepared by making serial dilutions of a saturated •NO solution, as previously reported. •NO solutions were made fresh and were kept in a glass flask with a rubber septum, stored in a light-free place. 帮我把这段用制备•NO 的流程表述下 拜托了。。。 |
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★ ★ ★
telomerase(金币+3,VIP+0):thanks 4-23 17:55
telomerase(金币+3,VIP+0):thanks 4-23 17:55
| 将2mol/L硫酸缓慢滴加到饱和 的 NaNO2溶液中制备NO气体，NO在这个不对称的反应中生成。产生的气体通入30% NaOH 溶液中，在加入H2SO4之前，冲氮30min 赶走O2，以免NO与O2反应。为了得到饱和的•NO 溶液（ 20℃, NO≈1.8 mmol L-1），在10ml的去氧蒸馏水中充入NO30分钟，在使用前一直保持•NO 的压力。当NO的浓度超过100ppm就会导致中毒，因此该实验要在通风橱中做。NO 的标准溶液通过其饱和溶液稀释得到。NO溶液必须现场制备并且保存在橡胶塞玻璃瓶中且避光。 |
3楼2009-02-24 13:38:49
★ ★ ★ ★ ★ ★ ★ ★
xiaoshuo6006(金币+2,VIP+0):翻译的很合理，很专业。。。 2-25 12:32
telomerase(金币+6,VIP+0):thanks 4-23 17:55
xiaoshuo6006(金币+2,VIP+0):翻译的很合理，很专业。。。 2-25 12:32
telomerase(金币+6,VIP+0):thanks 4-23 17:55
| 通过向装有NaNO2饱和溶液的玻璃烧瓶中缓慢滴加2mol/l 的硫酸，通过歧化反应来制备NO气体。生成的气体2次通过30%的氢氧化钠溶液，1次通过水，就可以完全脱净由于NO气体氧化生成的NO2气体。在滴加硫酸之前，所有的设备均需同N2脱氧30分钟，因为NO气体可以被O2迅速破坏。为了制备饱和NO溶液，10ml脱氧蒸馏水中通入纯的NO气体30分钟，在使用前保持NO气氛。100PPm以上的浓度的NO是有毒的，NO曝气的时候要在隔离室中进行。NO的标准溶液可以通过饱和溶液的稀释来制得。新制备的NO溶液要保存在玻璃瓶中，用胶塞，避光保存。 |
2楼2009-02-24 13:32:52
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