TY - JOUR
T1 - Liquid Chromatography with Electrochemical and/or Spectrophotometric Detection for Automated Determination of Lead, Cadmium, Mercury, Cobalt, Nickel, and Copper
AU - Bond, A. M.
AU - Wallace, G. G.
PY - 1984/10
Y1 - 1984/10
N2 - In situ formation of dithlocarbamate complexes within a chromatographic system has been Investigated as a method for the simultaneous and automated determination of lead, cadmium, mercury, cobalt, nickel, and copper. The automated, microprocessor-based system developed for the multielement determination can be operated continuously for periods of several days with either spectrophotometric or electrochemical detection. Limits of detection of 1 ng per 10 ¨L. Injected were achieved with spectrophotometric detection. Addition of an Ion exchange based suppressor column to remove excess dithlocarbamate ligand prior to detection Improved spectrophotometric detection limits for nickel, copper, cobalt, and mercury but Is deleterious for determination of lead and cadmium and decreases the period of time over which the automated Instrumentation can be run unattended. Electrochemical detection over extended periods of time employing oxidation at a glassy carbon electrode Is considerably more sensitive for nickel and copper than for the other elements.
AB - In situ formation of dithlocarbamate complexes within a chromatographic system has been Investigated as a method for the simultaneous and automated determination of lead, cadmium, mercury, cobalt, nickel, and copper. The automated, microprocessor-based system developed for the multielement determination can be operated continuously for periods of several days with either spectrophotometric or electrochemical detection. Limits of detection of 1 ng per 10 ¨L. Injected were achieved with spectrophotometric detection. Addition of an Ion exchange based suppressor column to remove excess dithlocarbamate ligand prior to detection Improved spectrophotometric detection limits for nickel, copper, cobalt, and mercury but Is deleterious for determination of lead and cadmium and decreases the period of time over which the automated Instrumentation can be run unattended. Electrochemical detection over extended periods of time employing oxidation at a glassy carbon electrode Is considerably more sensitive for nickel and copper than for the other elements.
UR - http://www.scopus.com/inward/record.url?scp=0021507793&partnerID=8YFLogxK
U2 - 10.1021/ac00276a025
DO - 10.1021/ac00276a025
M3 - Article
C2 - 6507853
AN - SCOPUS:0021507793
SN - 0003-2700
VL - 56
SP - 2085
EP - 2090
JO - Analytical Chemistry
JF - Analytical Chemistry
IS - 12
ER -