SIMULTANEOUS DETERMINATION OF ORGANOTIN, ORGANOLEAD, AND ORGANOMERCURY COMPOUNDS IN ENVIRONMENTAL-SAMPLES USING CAPILLARY GAS-CHROMATOGRAPHY WITH ATOMIC-EMISSION DETECTION
Y. Liu et al., SIMULTANEOUS DETERMINATION OF ORGANOTIN, ORGANOLEAD, AND ORGANOMERCURY COMPOUNDS IN ENVIRONMENTAL-SAMPLES USING CAPILLARY GAS-CHROMATOGRAPHY WITH ATOMIC-EMISSION DETECTION, HRC. Journal of high resolution chromatography, 17(7), 1994, pp. 527-536
As part of a continuing evaluation of new analytical and sample prepar
ation techniques conducted by the US Environmental Protection Agency (
EPA), the use of capillary gas chromatography with atomic emission det
ection (GC-AED) for the simultaneous determination of organotin, organ
olead, and organomercury compounds in environmental samples was invest
igated. Pentylmagnesium bromide was used to pentylate ionic organotin,
organolead, and organomercury compounds; the pentyl derivatives were
then separated by GC and determined by AED. Several important GC-AED p
arameters, including the type of injector inlet, carrier gas flow rate
, and helium make-up gas flow rate, were optimized for the simultaneou
s determination of these organometallic compounds. Their minimum detec
table concentrations were approximately 1.0 to 2.5 ng/mL using a 0.5-m
uL on-column injection. The calibration curves exhibited good linearit
y between 2.5 and 2500 ng/mL for organotin and organolead compounds, a
nd between 2.5 and 10000 ng/mL for organomercury compounds.