Journal
ANALYST
Volume 135, Issue 10, Pages 2700-2705Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c0an00090f
Keywords
-
Categories
Funding
- Spanish 'Ministerio de Educacion y Ciencia (MEC)' [CTM2006-08960-C02-01/TECNO]
- Consejeria de Innovacion Ciencia y Empresa (Junta de Andalucia) [P08-FQM-03554, P09-FQM-4659]
- Ministerio de Educacion y Ciencia (MEC)
Ask authors/readers for more resources
The simultaneous speciation of elements is of great concern, especially in the study of the interactions of species in living organisms. Here we report a method based on the coupling of HPLC-ICP-MS that is capable of separating and analyzing different selenium and mercury species (Se-methylselenocysteine, selenite, selenate, L-selenomethionine, D-selenomethionine, methylmercury and inorganic mercury). The proposed method uses two different mobile phases that are suitable for selenium and mercury speciation and leads to a successful determination of all the species in less than 27 min with good efficiency and resolution. The method was efficiently applied for simultaneous speciation of mercury and selenium in urine and in serum, the latter from umbilical cord samples. Selenocystine has been successfully identified in the former sample. Detection limits obtained were between 0.30 and 2.46 ng. Recovery studies of samples spiked with all species were performed to check the reliability of the method, and satisfactory recoveries (93-110%) were obtained in all cases. The relative standard deviations (RSDs) for species with ten replicate determinations of 80 mu g L-1 were between 4.5 and 9.2%. The proposed method offers a deeper insight into selenium and mercury interactions in the human body.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available