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FI on-Line Adsorption and Preconcentration Coupled with FAAS for the Determination of Trace Cu in Rice

Sachin Mittal

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Abstract

A flow injection knotted reactor preconcentration system coupled to flame atomic absorption spectrometry(FAAS)was developed for the determination of trace Cu in rice.With 60 s(sample throughput of 37/h)of sampling at a flow rate of 6.0 mL/min,an EF of 13.5(higher than 4.5 which achieved by Conventional elution method)and a detection limit of 5.4 μg/L were obtained.The precision(RSD,n=11)was 2.3% at the 200 μg/L level.When 0.01 % triethannolamine was used as masking reagent,the recovery rate of Cu in rice was from 96.4%～97.8%.

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What this paper is about

A flow injection knotted reactor preconcentration system coupled to flame atomic absorption spectrometry(FAAS)was developed for the determination of trace Cu in rice.With 60 s(sample throughput of 37/h)of sampling at a flow rate of 6.0 mL/min,an EF of 13.5(higher than 4.5 which achieved by Conventional elution method)and a detection limit of 5.4 μg/L were obtained.The precision(RSD,n=11)was 2.3% at the 200 μg/L level.When 0.01 % triethannolamine was used as masking reagent,the recovery rate of Cu in rice was from 96.4%～97.8%.

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Available abstract

A flow injection knotted reactor preconcentration system coupled to flame atomic absorption spectrometry(FAAS)was developed for the determination of trace Cu in rice.With 60 s(sample throughput of 37/h)of sampling at a flow rate of 6.0 mL/min,an EF of 13.5(higher than 4.5 which achieved by Conventional elution method)and a detection limit of 5.4 μg/L were obtained.The precision(RSD,n=11)was 2.3% at the 200 μg/L level.When 0.01 % triethannolamine was used as masking reagent,the recovery rate of Cu in rice was from 96.4%～97.8%.

Key concepts: Chemistry, Detection limit, Elution, Analytical Chemistry (journal), Reagent, Chromatography, Volumetric flow rate, Recovery rate

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