V O L U M E 27, NO. 10, O C T O B E R 1 9 5 5 in the idealized cases for such substances as hydrochloric acid or aluminum chloride, the limit is 0.01M chloride. In the case of sea water the chlorinity is high and by dilution to 1 to 4 the optimum working range of 0.05 to 0.4M chloride was used for this determination. The reading required for a chloride determination by the burning procedure can be obtainrd in about 1 minute if all solutions are previously prepared. The method fails to distinguish between the chloride, bromide, or the iodide. The B and C band systems of CuBr and the D and E band systems of CUI emit in the same region as the chloride. However, the concentrations of the bromide and iodide in sea water are belox the detection limit of the method and so for practical purposes only the chloride value is obtained. The sensitivity leaves much to be desired and may be improved by using a more sensitive detection system, but even with this improvement it is insensitive compared with the determination of metallic elements. However, for the more concentrated chloride solutions this method should provide a useful extension to the existing methods of chloride analysis. LITERATURE CITED
(1) Raker, G. L., and Johnson, IT. C., hi
