detremination of elements in biological materials
Sequential inductively coupled plasma atomic emission spectrometry was used to determine Mg, Ca, K, Na, Fe, Mn, Cu and Zn in 5 different National Institute of Standards and Technology Standard Reference Materials (pine needles, dried skim milk, wheat flour, citrus leaves and bovine liver), by nebulizing their carbonaceous slurries obtained by simply warming these matrices with conc. sulphuric acid using a temp. programme up to 350°C and gently boiling them for a short period of time. The method has been tested on similar matrices in previous studies, utilizing flame AAS and electrothermal AAS. The results show good precision, expressed as relative s.d., s, percentage (often <5%), and accuracy, expressed as relative error, e, percentage (1-6%). The detection limits for each element are also reported.
Determination of Elements in Biological Material by Inductively Coupled Plasma Atomic Emission Spectrometry with Sampling of a Carbonaceous Slurry
FAGIOLI, Francesco;RIGHINI, Francesca
1990
Abstract
Sequential inductively coupled plasma atomic emission spectrometry was used to determine Mg, Ca, K, Na, Fe, Mn, Cu and Zn in 5 different National Institute of Standards and Technology Standard Reference Materials (pine needles, dried skim milk, wheat flour, citrus leaves and bovine liver), by nebulizing their carbonaceous slurries obtained by simply warming these matrices with conc. sulphuric acid using a temp. programme up to 350°C and gently boiling them for a short period of time. The method has been tested on similar matrices in previous studies, utilizing flame AAS and electrothermal AAS. The results show good precision, expressed as relative s.d., s, percentage (often <5%), and accuracy, expressed as relative error, e, percentage (1-6%). The detection limits for each element are also reported.I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
