Simple home-made sensors for potentiometric titrations. [Nitroform CH(NO/sub 2/)/sub 3/]

Conference · Thu Apr 01 04:00:00 EST 1982

OSTI ID:5263112

Selig, W

A sensor for potentiometric titrations was prepared by coating a spectroscopic graphite rod with a solution of poly(vinyl chloride) and dioctyphthalate in tetrahydrofuran. The reference electrode was an Ag/AgCl single-junction electrode. The sensor was used in precipitation, acid-base, compleximetric, and redox titrations. Preparation of the coated-graphite sensor is simple and rapid. Moreover, it is quite inexpensive. A limitation is its applicability in aqueous media only, because organic solvents will dissolve the membrane. Various uncoated types of graphite have also been investigated as sensors, particularly in two applications of interest in the analysis of propellants: the titration of nitroform and perchlorate. Obviously, these sensors can be used also in nonaqueous, or partially nonaqueous media. These sensors may also find use in the potentiometric titration of fluoride vs La(III) or Th(IV).

• Research Organization: Lawrence Livermore National Lab., CA (USA)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5263112
• Report Number(s): UCRL-87163; CONF-820538-1; ON: DE82013792
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102* -- Chemical & Spectral Procedures
AQUEOUS SOLUTIONS
CARBON
CARBOXYLIC ACID SALTS
CHEMICAL ANALYSIS
CHLORIDES
CHLORINATED ALIPHATIC HYDROCARBONS
CHLORINE COMPOUNDS
COATINGS
DATA
DISPERSIONS
ELECTRIC MEASURING INSTRUMENTS
ELECTRICAL EQUIPMENT
ELECTRODES
ELECTROMOTIVE FORCE
ELEMENTAL MINERALS
ELEMENTS
EQUIPMENT
EXPERIMENTAL DATA
FURANS
GRAPHITE
HALIDES
HALOGEN COMPOUNDS
HALOGENATED ALIPHATIC HYDROCARBONS
HETEROCYCLIC COMPOUNDS
INFORMATION
MEASURING INSTRUMENTS
METALS
MINERALS
MIXTURES
NITRO COMPOUNDS
NONMETALS
NUMERICAL DATA
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
ORGANIC POLYMERS
OXYGEN COMPOUNDS
PERCHLORATES
PERFORMANCE
PHTHALATES
POLYMERS
POLYVINYLS
POTENTIOMETRY
PVC
QUANTITATIVE CHEMICAL ANALYSIS
RELIABILITY
SILVER
SILVER CHLORIDES
SILVER COMPOUNDS
SOLUTIONS
TETRAHYDROFURAN
TITRATION
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
VOLTMETERS