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lgdab木蟲(chóng) (小有名氣)
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[求助]
翻譯求助——AOAC986.15，關(guān)于氫化物發(fā)生器 已有1人參與
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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 |
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wrgeng
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【答案】應(yīng)助回帖
商家已經(jīng)主動(dòng)聲明此回帖可能含有宣傳內(nèi)容
★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★
感謝參與，應(yīng)助指數(shù) +1
lgdab: 金幣+20, ★★★很有幫助, 謝謝，這段真不好翻譯，一直看不懂 2013-12-24 15:47:25
hanches: 金幣+2, 感謝應(yīng)助，BB獎(jiǎng)勵(lì)，歡迎常來(lái)本版參與交流~~~ 2013-12-24 20:50:43
感謝參與，應(yīng)助指數(shù) +1
lgdab: 金幣+20, ★★★很有幫助, 謝謝，這段真不好翻譯，一直看不懂 2013-12-24 15:47:25
hanches: 金幣+2, 感謝應(yīng)助，BB獎(jiǎng)勵(lì)，歡迎常來(lái)本版參與交流~~~ 2013-12-24 20:50:43
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氫氣發(fā)生器-見(jiàn)圖 986.15A.結(jié)構(gòu)如下 (1)平底燒瓶-硅硼玻璃，50毫升 (訂購(gòu)代碼 No. 5160, 或等同品). (2) 截止閥.—兩孔（一孔通過(guò)中心） No. 9 橡膠塞,配有 100 mm × 1/8 in. (3mm)時(shí)聚乙烯管通過(guò)中心孔。將聚乙烯管放置到一個(gè)直徑為 5/8 in. (16 mm) 的聚乙烯試管內(nèi)25mm,并通過(guò)試管的底部. 另一個(gè)75 mm ×1/8 in. (3 mm) 聚乙烯管作為氮?dú)獾膶?dǎo)入管，用火焰將聚乙烯管封閉，并用針扎幾個(gè)小孔， 同時(shí)制備另一個(gè) 500 mm×1/16 in. (1.5 mm)聚乙烯管并穿過(guò)橡膠塞. 用500 mm Tygon管連接另一端到 AA 光譜儀 ，并在混合器開(kāi)始大約75mm處連接一個(gè)輔助管 taching？？ tubing. (3)發(fā)生器監(jiān)測(cè)—(Op tional.) 64 mm×0.5 in. (13 mm) id 牢固的固定到實(shí)驗(yàn)室. 安裝兩個(gè)固定裝置，并使固定裝置可以自由轉(zhuǎn)動(dòng)180度，在氫氣發(fā)生器和外置卡子之間安裝一個(gè)橡膠塞并防放置在卡子的上部。在操作過(guò)程中，將發(fā)生器燒瓶放置在外置卡子中，并固定在燒瓶的頸部，這樣整套裝置可以迅速的轉(zhuǎn)化，通過(guò)旋轉(zhuǎn)外置卡子的把手，使得試樣和硼氫化鈉迅速混合和再生。 設(shè)備安裝部分有點(diǎn)難度，僅供參考。 |
2樓2013-12-23 14:41:32
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3樓2013-12-23 14:56:54
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