Combustion-Amperometric Titration of Traces of Halogen in Petroleum Products

Amperometric Titrations

“…Silver halide titrations have been described in several publications. Cali, Loveland, and Partikian (15) determined traces of halogens in petroleum products by a procedure involving combustion followed by amperometric titra-tion. Enoki and Morisaka (25,26) studied the bi-amperometric titration of halides and cyanide using a pair of platinum or silver electrodes.…”

Rapid Decomposition and Analysis Procedure for Microdetrmination of Chlorine Compounds in Petroleum Fractions

“…Methods of decomposition have included the use of metallic sodium or potassium (6), sodium biphenyl (2, 5, 10), lamp combustion (1, 2), and an oxyhydrogen burner in an enclosed system (3,4)• However, all these methods require long periods for decomposition operations on a single sample and significant chloride contamination may be introduced by the reagents or technique.…”

“…Five-milliliter samples can be decomposed in about 3 minutes and the chloride measured in less than 1 minute. Samples containing 1 to 10 p.p.m.…”

Determination of Microgram Quantities of Arsenic in Naphthas with Oxyhydrogen Burner

“…Silver diethyldithiocarbamate pyridine solution, prepared by dissolving 1 gram of the salt in 200 ml. of pyridine from a freshly opened bottle.…”