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| 本帖產(chǎn)生 1 個 翻譯EPI ，點(diǎn)擊這里進(jìn)行查看 | ||
[求助]
求英語翻譯�。。。。。。。�！急！
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| Aliquots of saturated sodium 3-nitrobenzenesulphonate and sodium 4-nitrobenzenesulphonate solutions are transferred through a coarse filter into a tarred volumetric flask. The concentration of 3- or/and sodium 4-nitrobenzenesulphonate in water is determined using a Shimadzu-6A high-performance liquid phase chromatograph (HPLC). The Diamonsil C18 (150 mm×4.6mm) chromatographic column is used. The mobile phase consists of three eluents which are water, Na2SO4 and H3PO4. The uncertainty of the measurement is less than 0.001 g of sodium 3-nitrobenzenesulphonate or sodium 4-nitrobenzenesulphonate per 100 g of water. The densities (ρ) of the equilibrium liquid phase are measured using a pycnometer (11-FY) with an uncertainty of 0.0002 gcm-3. The densities of the equilibrated solution were measured with a gravity bottle method with a precision of (0.0002 g and used for mass fraction calculation of liquid components. The specific gravity bottle method with correction of the air floating force was used. The density of dry air at 293.15 K and normal atmospheric pressure. Each analysis is repeated three times, and the average value of the three measurements is considered as the final value of the analysis.18-19 |
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至尊木蟲 (職業(yè)作家)
- 翻譯EPI: 110
- 應(yīng)助: 13 (小學(xué)生)
- 貴賓: 0.566
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- 專業(yè): 金屬有機(jī)化學(xué)
【答案】應(yīng)助回帖
★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★
sltmac: 金幣+1 2012-04-22 08:30:20
-軒影鳶: 金幣+10, 翻譯EPI+1, ★★★★★最佳答案 2012-04-22 09:24:43
sltmac: 金幣+1 2012-04-22 08:30:20
-軒影鳶: 金幣+10, 翻譯EPI+1, ★★★★★最佳答案 2012-04-22 09:24:43
| 通過布氏漏斗轉(zhuǎn)移間硝基苯磺酸鈉和對硝基苯磺酸鈉到圓底燒瓶中。用HPLC（Shimadzu-6A）檢測它們在水中的濃度。我們使用C18柱。流動相由水，Na2SO4和H3PO4組成。每100g水中，間硝基苯磺酸鈉和對硝基苯磺酸鈉的檢測誤差為0.001g。平衡時，溶液密度誤差為0.0002g/cm3。平衡溶液的密度由比重瓶測量，用于計(jì)算溶液的組分。這種比重瓶測量的方法由空氣浮力校正。在293.15K正常大氣壓下測量的干燥空氣的密度。每一個分析重復(fù)三次，三次測量的平均值作為最后值。 |
2樓2012-04-22 07:50:09
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