The accuracy of the vapour-injection calibration method for the determination of mercury by amalgamation/cold-vapour atomic absorption spectrometry |
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| Authors: | R Dumarey E Temmerman R Adams J Hoste |
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| Institution: | Institute for Nuclear Sciences, Rijksuniversiteit Gent, Proeftuinstraat 86, B-9000 Gent Belgium |
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| Abstract: | A vapour-injection method is described for the calibration of mercury determinations. Its accuracy depends mainly on the temperature of the mercury-saturated air, which must be lower than the ambient temperature. By preconditioning the syringe, initial irreproducible measurements caused by sorption are avoided. Under optimal conditions, the precision of the injection in the range 1–100 ng of mercury is generally better than 1%. |
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