AbstractsChemistry

A method for the preparation of calcium arsenate is given with a view to reducing it to the arsenide, this to be used in the formation of arsine. The analysis includes moisture, carbonate, chloride, arsenic and calcium. The second section of the thesis deals with an electrolytic preparation of arsine. A literature survey shows previous work along this line but only on very small amounts of arsenic. This paper deals with various types of cells using an aluminum cathode and a saturated solution of arsenic trioxide as the electrolyte. In the third section a literature survey is given on the various methods for determining minute amounts of fluorine with the purpose of finding one applicable to the determination of the element in urine. The results obtained using several of these are shown in the experimental work.