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6699345 
Journal Article 
Atmospheric pollution fluorometric fluoride analyzer 
Ivie, JO; Zielenski, LF; Thomas, MD; Thompson, CR 
1965 
15 
(5) 
195-197 
BCI:BCI19664700008853 
A fluoride analyzer originally designed by Wiggins, St. John, Thomas and associates at Stamford Research Institute, has been modified to improve its operational capabilities and reliability so as to operate for periods in excess of 6 months with virtually no maintenance. It measures hydrogen fluoride in the atmosphere in the sub-parts per billion range. The need for the instrument, method of measuring fluoride and the modifications made to improve the SRI (Stanford Research Institute) instrument are presented. The instrument has been operated in the field for 2 years beside impingers which obtain daily integrated samples. The impingers samples are subsequently titrated. Satisfactory correlation has been found between the average daily values by the automatic analyzer and the impinger. || ABSTRACT AUTHORS: Authors