A case of tinea faciae caused by Trichophyton equinum affecting a 5-year-old boy is described. The boy had ridden a pony a month earlier and responded to a 6-week course of treatment with oral and topical terbinafine.

A sensitive extractivespectrophotometric method for the determination of potassium using dibenzo-I 8crown-6 and bromothymol blue as the counter ion is described. The absorbance was measured at 410 n m and the value of the molar absorptivity was 18 000 I mol-1 cm-1. A linear working range from 0.1 to 3.0 pg ml-1 of potassium was obtained and the relative standard deviation was 2.3%. Rubidium and ammonium ions gave the highest interference. The method was applied to the determination of potassium in fruits and beverages.

No abstract

No abstract