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jgwang65

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Figure 6 displays the cyclic voltammograms of QH2 in dilute buffered acetonitrile. A new peak appears at 0.75 V in curve b of figure 6. It reveals that diethylamine can be oxidised in acetonitrile. Therefore, the scan range is selected from -0.8 V to 0.4 V when buffer of diethylamine and perchloric acid is used. When a dilute buffer of 0.2 mmol L-1 perchloric acid and 0.4 mmol L-1 diethylamine is introduced in test solution, a peak ocurres at -0.35 V. Figure 6 shows that the peak magnitude increases with increasing the concentration of buffer. As the diethylamine concentration exceeds 5 mM, the peak current of QH2 in acetonitrile become independent of the buffer of perchloric acid and diethylamine. Figue 5 and figure 6 reveal that the effect of buffer in acetonitrile is similar to that in aqueous solution.
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congyi610

金虫 (正式写手)

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图6显示了稀释缓冲乙腈中QH2的循环伏安图。在图6的曲线B中,0.75 V出现一个新的峰值。结果表明二乙胺可在乙腈中氧化。因此,当使用二乙胺和高氯酸的缓冲液时,扫描范围从-0.8 V选择到0.4 V。当在试验溶液中引入0.2 mmolL L-1高氯酸和0.4毫摩尔L-1二乙胺的稀缓冲液时,在-0.35V的峰值停留时间图6示出峰值幅度随着缓冲液浓度的增加而增加。当乙胺浓度超过5 mm时,乙腈中的QH2峰电流与高氯酸和二乙胺的缓冲液无关。图5和图6表明缓冲液在乙腈中的作用与水溶液相似。
4楼2018-06-06 08:25:37
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phu_grassman

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快乐岛、布吉岛岛主

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爱与雨下: 金币+1 2018-05-13 21:47:45
jgwang65(fjtony163代发): 金币+50, 代发 2018-06-15 01:31:48
fjtony163: 翻译EPI+1, 代发 2018-06-15 01:31:53
Figure 6 displays the cyclic voltammogram of QH2 in dilute buffered acetonitrile. A new peak appears at 0.75 V as shown on Curve b. It reveals that diethylamine can be oxidised in acetonitrile. Therefore, the scan range was selected from -0.8 V to 0.4 V when buffer of diethylamine and perchloric acid was used. When diluted buffer of 0.2 mmol L-1 perchloric acid and 0.4 mmol L-1 diethylamine was introduced in the test solution, a peak occured at -0.35 V. As shown in Figure 6, the peak intensity increases with the increase in the concentration of buffer. When the concentration of diethylamine exceeded 5 mM, the peak current of QH2 in acetonitrile became independent of the perchloric acid and diethylamine buffer. Figue 5 and Figure 6 reveal that the effect of buffer in acetonitrile is similar to that in aqueous solution.
2楼2018-05-08 11:39:21
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frozenfox7

专家顾问 (正式写手)

wet wet wet
3楼2018-05-08 22:05:29
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