Recent studies of Lake Bonney, a meromictic Antarctic lake, ultilized techniques modified for hypersaline waters and produced results significantly different from those of previous investigators. Notably higher values are reported for ammonia and nitrate, while phosphorous levels tend to be in distinct disagreement with those obtained by other workers except for limited data reported by one author using a technique similar to that used in the current studies. The method of standard additions was employed as a partial solution to salinity interferences.