| 查看: 681 | 回复: 2 | ||||
[求助]
翻译求助——AOAC986.15，关于氢化物发生器已有1人参与
|
Hydride generator.—See Figure 986.15A. Constructed from following: (1) Flat bottom flask.—Borosilicateglass, 50 mL (Corning No. 5160, or equivalent). (2) Stopper fittings.—Two-hole (one through center) No. 9 rubber stopper, fitted with gas outlet tube of 100 mm × 1/8 in. (3mm) id polyethylene tubing through center hole. Place bottom of gas outlet tube through cut off bottom 1 in. (25 mm) segment of 5/8 in. (16 mm) polyethylene test tube with hole in bottom so that 3 mm of tube protrudes through test tube. In sert through second hole 75 mm ×1/8 in. (3 mm) id polyethylene tubing as N2 inlet tube. Seal bottom end of tube with burner and then punch several holes at sealed end with 21 gage needle. Alternatively, prepare similarly 500 mm×1/16 in. (1.5 mm) id polyethylene tubing and hold in place in stopper with hole-through septum. Connect other end of tubing to AA spectrophotometer with 500 mm Tygon tubing by cutting auxiliary line at ca 75 mm from mixing chamber and at taching tubing. (3) Generator mount.—(Op tional.) 64 mm×0.5 in. (13 mm) id pipe secured to laboratory ring stand by means of clamp holder. Insert exten sion clamp into pipe and attach another clamp to back of clamp to hold clamp in place and to serve as handle; clamp is now free to rotate ca 180°. Attach rubber stopper of hydridegenerator to extension clamp with stiffwire and position just at level of clamp jaws. In operation, place flask of generator between jaws of extension clamp, insert stopper firmly into neck of flask, then tighten clamp jaws around neck of flask. Unit can be rapidly and uniformly inverted by rotating handle on extension clamp, thus allowing test solution and sodium borohydride to mix rapidly and reproducibly. 1.jpg |
回复此楼» 猜你喜欢
投稿Elsevier的Neoplasia杂志，到最后选publishing options时页面空白，不能完成投稿
已经有22人回复
-
申请26博士
已经有5人回复
-
职称评审没过，求安慰
已经有22人回复
-
垃圾破二本职称评审标准
已经有15人回复
-
EST投稿状态问题
已经有7人回复
-
毕业后当辅导员了，天天各种学生超烦
已经有4人回复
-
聘U V热熔胶研究人员
已经有10人回复
-
求助文献
已经有3人回复
-
投稿返修后收到这样的回复，还有希望吗
已经有8人回复
-
三无产品还有机会吗
已经有6人回复
» 本主题相关价值贴推荐，对您同样有帮助:
- 氢化物发生器-原子吸收测汞求助~~
已经有7人回复
- 【求助】ICP-AES测砷
已经有11人回复
wrgeng
专家顾问 (职业作家)
-
专家经验: +264 - 应助: 111 (高中生)
- 贵宾: 0.16
- 金币: 24127.3
- 散金: 150
- 红花: 48
- 帖子: 4618
- 在线: 627.8小时
- 虫号: 1227257
- 注册: 2011-03-09
- 性别: GG
- 专业: 凝聚态物性I:结构、力学和
- 管辖: 精细化工
【答案】应助回帖
商家已经主动声明此回帖可能含有宣传内容
★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★
感谢参与，应助指数 +1
lgdab: 金币+20, ★★★很有帮助, 谢谢，这段真不好翻译，一直看不懂 2013-12-24 15:47:25
hanches: 金币+2, 感谢应助，BB奖励，欢迎常来本版参与交流~~~ 2013-12-24 20:50:43
感谢参与，应助指数 +1
lgdab: 金币+20, ★★★很有帮助, 谢谢，这段真不好翻译，一直看不懂 2013-12-24 15:47:25
hanches: 金币+2, 感谢应助，BB奖励，欢迎常来本版参与交流~~~ 2013-12-24 20:50:43
|
氢气发生器-见图 986.15A.结构如下 (1)平底烧瓶-硅硼玻璃，50毫升 (订购代码 No. 5160, 或等同品). (2) 截止阀.—两孔（一孔通过中心） No. 9 橡胶塞,配有 100 mm × 1/8 in. (3mm)时聚乙烯管通过中心孔。将聚乙烯管放置到一个直径为 5/8 in. (16 mm) 的聚乙烯试管内25mm,并通过试管的底部. 另一个75 mm ×1/8 in. (3 mm) 聚乙烯管作为氮气的导入管，用火焰将聚乙烯管封闭，并用针扎几个小孔， 同时制备另一个 500 mm×1/16 in. (1.5 mm)聚乙烯管并穿过橡胶塞. 用500 mm Tygon管连接另一端到 AA 光谱仪 ，并在混合器开始大约75mm处连接一个辅助管 taching？？ tubing. (3)发生器监测—(Op tional.) 64 mm×0.5 in. (13 mm) id 牢固的固定到实验室. 安装两个固定装置，并使固定装置可以自由转动180度，在氢气发生器和外置卡子之间安装一个橡胶塞并防放置在卡子的上部。在操作过程中，将发生器烧瓶放置在外置卡子中，并固定在烧瓶的颈部，这样整套装置可以迅速的转化，通过旋转外置卡子的把手，使得试样和硼氢化钠迅速混合和再生。 设备安装部分有点难度，仅供参考。 |
2楼2013-12-23 14:41:32
 |
3楼2013-12-23 14:56:54