Beeuwkes R
Scan Electron Microsc. 1979(2):767-72.
Techniques are described for the chemical analysis of urea by means of X-ray microanalysis. A selective labelling reagent, thioxanthen-9-ol, is used to precipitate urea together with a sulfur label. Reagents are added to and removed from microdroplets of 50 picoliter volume by means of oil-water partition. The sensitivity of the method is less than 1 picomole. The possibility of extension of these techniques to other analyses is discussed.
描述了通过X射线微分析对尿素进行化学分析的技术。一种选择性标记试剂噻吨-9-醇用于将尿素与硫标记一起沉淀。通过油水分配将试剂添加到50皮升体积的微滴中并从中除去。该方法的灵敏度小于1皮摩尔。讨论了将这些技术扩展到其他分析的可能性。
