Modified Siwoloboff–Wiegand Procedure for the Determination of Boiling Points on a Microscale,Journal of Chemical Education

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Modified Siwoloboff–Wiegand Procedure for the Determination of Boiling Points on a Microscale
Journal of Chemical Education ( IF 2.5 ) Pub Date : 2018-07-03 00:00:00 , DOI: 10.1021/acs.jchemed.6b00839
Timothy L. Troyer ₁ , Kristen R. Mounsey ₁ , William J. King ₂ , Laura M. Givens ₂ , Jessica A. Hutton ₂ , Melissa Hood Benges ₂ , Kindra N. Whitlatch ₂ , Jacob D. Wagoner ₂

Affiliation

Developing simpler, more accessible, and more affordable methods for the determination of the boiling point of microscale amounts of liquid may lead to increased utilization in research and teaching laboratories as an analytical technique. Our efforts toward that goal have revealed that digital hot plates can be used as the heat source. One option is to simply use a test tube and a digital thermometer, requiring 300 μL of liquid that accurately determines boiling points that range from 35 to 150 °C. An alternative method, requiring as little as 30 μL of liquid, utilizes a modified aluminum block and a temperature control probe coupled to the digital hot plate that results in the accurate determination of boiling points that range from 35 to 205 °C. Both modifications to the Siwoloboff–Wiegand method provide consistent, reliable, and accurate boiling points for a variety of liquids with a wide range of boiling points.

中文翻译：

改进的Siwoloboff-Wiegand方法在微尺度上确定沸点

开发更简单，更易用，更实惠的方法来确定微量液体的沸点可能会导致研究和教学实验室作为分析技术的使用增加。我们为实现这一目标所做的努力表明，数字电热板可以用作热源。一种选择是简单地使用试管和数字温度计，需要300μL的液体才能准确确定35至150°C的沸点。另一种方法需要的液体低至30μL，它使用改良的铝块和连接至数字电热板的温度控制探头，可精确确定35至205°C的沸点。对Siwoloboff–Wiegand方法的两种修改都可以提供一致，可靠，

更新日期：2018-07-03

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