Using a Homemade Flame Photometer To Measure Sodium Concentration in a Sports Drink
Using a Homemade Flame Photometer To Measure Sodium Concentration in a Sports Drink
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使用自制火焰光度计测量运动饮料中的钠浓度
DOI：
10.1021/ed3004758
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发表时间：
2013
影响因子：
3
通讯作者：
Karina Elvy
中科院分区：
文献类型：
--
作者：
C. LaFratta;Swapan S Jain;Ian Pelse;Olja Simoska;Karina Elvy
该实验的目的是创建一个简单而廉价的火焰光度计来测量饮料中的钠浓度，如佳得乐。我们使用小管创建了一个喷雾器，并将样品喷入本生灯的底座。靠近火焰的是一个光电二极管，它带有一个专门用于钠D线发射的滤光片。在制作了校准曲线后，学生们可以检测到佳得乐中钠的含量在标签上数值的10%以内。该系统的成本不到500美元，可由学生组装并用于分析化学实验室课程。
The purpose of this experiment was to create a simple and inexpensive flame photometer to measure the concentration of sodium in beverages, such as Gatorade. We created a nebulizer using small tubing and sprayed the sample into the base of a Bunsen burner. Adjacent to the flame was a photodiode with a filter specific for the emission of the sodium D-line. After making a calibration curve, students could detect the amount of sodium in Gatorade to within 10% of the value on the label. The system costs less than $500 and can be assembled by students and used in an analytical chemistry laboratory course.