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虫研

捐助贵宾 (小有名气)

[交流] 求翻译化学/生化类英文两句

When testing amine (including alkaloidal) hydrochlorides that do not respond to the above test, add one drop of diluted nitric acid and 0.5 mL of silver nitrate TS to a solution of the substance being examined containing, unless otherwise directed in the monograph, about 2 mg of chloride ion in 2 mL: a white, curdy precipitate is formed. Wash the precipitate with three 1-mL portions of nitric acid solution (1 in 100), and discard the washings.
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sdywhxlql

金虫 (小有名气)

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虫研(金币+1,VIP+0):补充得好 4-13 18:24
补充一下,是每次用一毫升洗涤,共洗三次。
3楼2009-04-13 17:28:04
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sdywhxlql

金虫 (小有名气)

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虫研(金币+5,VIP+0):认真 4-13 18:24
当受试胺的盐酸盐(包括生物碱)不对上述测试响应时,于该受试液中(除另有规定外,至少含有约2mg(2ml)氯离子)加入一滴稀硝酸,和0.5ml硝酸银标准液,有白色凝乳状沉淀生成。用1ml硝酸溶液(1毫升稀释至100毫升)洗涤三次,弃去滤液
2楼2009-04-13 17:26:42
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