University of North Florida
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Stuart Chalk, Ph.D.
Department of Chemistry
University of North Florida
Phone: 1-904-620-1938
Fax: 1-904-620-3535
Email: schalk@unf.edu
Website: @unf

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Human Faeces

Classification: Biological material -> faeces -> human

Citations 2

"Inductively Coupled Plasma Spectrometry In The Study Of Childhood Soil Ingestion. 2. Methodology"
J. Anal. At. Spectrom. 1989 Volume 4, Issue 8 Pages 727-735
Xioaru Wang, Alexandra Lásztity, Miklós Viczián, Yescheskel Israel and Ramon M. Barnes

Abstract: In a study aimed at quantifying the amount of soil ingested by infants and toddlers, faeces and urine collected in commodes or on diapers, together with home and pre-school dust, soil and food samples, were analyzed for Al, Ba, Mn, Si, Ti, V, Y and Zr by ICP-AES with multi-channel and sequential instruments, and V, Y and Zr were also determined by ICP-MS with flow injection sample introduction. Protocols are described for sample prep., and for online dilution and calibration for ICP-MS. Results obtained on standard solution and on reference soil and dust were in good agreement with certified or recommended values, and results by ICP-AES and ICP-MS were not statistically different, although those by ICP-MS were more precise. Flow injection ICP-MS is recommended for determining V, Y and Zr, which are present at low concentration.
Aluminum Barium Manganese Silicon Titanium Yttrium Sample preparation Spectrophotometry Mass spectrometry Reference material

"Comparison Of Fast-atom-bombardment, Thermal-ionization And Inductively Coupled Plasma Mass Spectrometry For The Measurement Of Zinc-64/zinc-67 Stable Isotopes In Human Nutrition Studies"
Rapid Commun. Mass Spectrom. 1989 Volume 3, Issue 6 Pages 203-205
J. Eagles, S. J. Fairweather-Tait, F. A. Mellon, D. E. Portwood, R. Self, A. Götz, K. G. Heumann, H. M. Crew

Abstract: Samples of faeces from humans receiving 67Zn in feeding experiments were treated in an autoclave, freeze-dried and ashed at 480°C. The ash was dissolved in concentrated HCl, and Zn was isolated by ion-exchange chromatography. Analysis was completed by fast-atom-bombardment or thermal-ionization MS or by ICP-MS with either continuous-nebulization or flow injection introduction. The 64Zn-to-67Zn ratios obtained are reported. The required precision of 1% (coefficient of variation) was not met by flow injection ICP-MS; the methods were otherwise equally suitable.
Zinc-64 Zinc-67 Mass spectrometry Mass spectrometry Mass spectrometry Isotope ratio Method comparison