Reverse-phase HPLC of benzylpropionitrile dithiocarbamate complexes for the determination of priority pollutant metals
Thesis/Dissertation
·
OSTI ID:5852718
A new dithiocarbamate, benzylpropionitrile dithiocarbamate (BPDTC), has been synthesized for use in metal analysis. The HPLC behavior of metal chelates of BPDTC has been investigated for the simultaneous determination of antimony, cadmium, chromium, copper, mercury, nickel, lead, selenium, thallium, and zinc, all of which are on the Environmental Protection Agency's list of priority pollutant metals. Metals are extracted into dichloromethane as BPDTC chelates, and then separated on a C-18 column. Cobalt is added as an internal standard. The effects of pH and of three organic modifiers (methanol, acetonitrile, tetrahydrofuran) of the mobile phase on retention time have been investigated. Addition of dichloromethane to the mobile phase increases solubility and chelate stability, and improves the separation of metal BPDTC complexes. BPDTC is added to the aqueous mobile phase to reduce on-column dissociation of the complexes. Detection limits at 260 nm are in the range of 0.1 to 3 ppb using a 1 liter sample.
- Research Organization:
- Akron Univ., OH (USA)
- OSTI ID:
- 5852718
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102* -- Chemical & Spectral Procedures
ACETONITRILE
ALCOHOLS
ANTIMONY
CADMIUM
CARBAMATES
CARBONIC ACID DERIVATIVES
CARBOXYLIC ACID SALTS
CHELATES
CHROMATOGRAPHY
CHROMIUM
COBALT
COMPLEXES
COPPER
ELEMENTS
EXTRACTION
FURANS
HETEROCYCLIC COMPOUNDS
HYDROXY COMPOUNDS
LEAD
LIQUID COLUMN CHROMATOGRAPHY
MERCURY
METALS
METHANOL
NATIONAL ORGANIZATIONS
NICKEL
NITRILES
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
ORGANIC SULFUR COMPOUNDS
PH VALUE
POLLUTANTS
POLYCYCLIC SULFUR HETEROCYCLES
SELENIUM
SEMIMETALS
SEPARATION PROCESSES
SOLUBILITY
TETRAHYDROFURAN
THALLIUM
TIME DEPENDENCE
TRANSITION ELEMENTS
US EPA
US ORGANIZATIONS
ZINC
400102* -- Chemical & Spectral Procedures
ACETONITRILE
ALCOHOLS
ANTIMONY
CADMIUM
CARBAMATES
CARBONIC ACID DERIVATIVES
CARBOXYLIC ACID SALTS
CHELATES
CHROMATOGRAPHY
CHROMIUM
COBALT
COMPLEXES
COPPER
ELEMENTS
EXTRACTION
FURANS
HETEROCYCLIC COMPOUNDS
HYDROXY COMPOUNDS
LEAD
LIQUID COLUMN CHROMATOGRAPHY
MERCURY
METALS
METHANOL
NATIONAL ORGANIZATIONS
NICKEL
NITRILES
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
ORGANIC SULFUR COMPOUNDS
PH VALUE
POLLUTANTS
POLYCYCLIC SULFUR HETEROCYCLES
SELENIUM
SEMIMETALS
SEPARATION PROCESSES
SOLUBILITY
TETRAHYDROFURAN
THALLIUM
TIME DEPENDENCE
TRANSITION ELEMENTS
US EPA
US ORGANIZATIONS
ZINC