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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NIST 909

Classification: Reference Material -> NIST -> 909 -> Human serum

Citations 3

"Determination Of Trace Elements In Human Serum By Inductively Coupled Plasma Atomic-emission Spectrometry With Flow Injection"
Anal. Chim. Acta 1996 Volume 320, Issue 2-3 Pages 185-189
H. B. Lim*, M. S. Han and K. J. Lee

Abstract: Measurements were made with a Labtam (Australia) P1000 ICP-AES system and a commercially available LC system. Human serum was subjected to 4 cycles of freezing and thawing to remove coagulation factors, then ultrafiltration was performed with 1.2, 0.8, 0.45 and 0.22 µm pore-size prefilters and the samples were lyophilized. They were analyzed for Mg, Cu, Zn, Fe, Sr and Li. The operating parameters are tabulated. Albumin was used for matrix matching. Recoveries for Cu, Fe, Mg and Li were in the range 95-99.8% for a standard reference material; RSD were 1.3%. Calibration graphs were linear.
Magnesium Copper Zinc Iron Strontium Lithium Spectrophotometry Reference material

"Flow Injection Method For Determination Of Uranium In Urine And Serum By Inductively Coupled Plasma Mass Spectrometry"
Anal. Chim. Acta 1996 Volume 334, Issue 3 Pages 295-301
Avraham Lorber, Zeev Karpas* and Ludwik Halicz

Abstract: Urine acidified with one-hundredth its volume of HNO3 or untreated serum was injected from a 100 µL loop into a carrier stream comprising 0.6% HNO3 containing 1 g/l of Triton X-100. The stream was passed to the ICP nebulizer and the intensity of the 238U+ signal was measured during a dwell time of 250 ms in the mass spectrometer. The total analysis time was 60 s and a throughput of 50 samples per h was achieved. The detection limit was 1.5 ng/l of U. Memory and matrix effects were reduced by adding the Triton to the carrier. The method was applied to the determination of U in samples taken from a population not occupationally exposed to U or its compounds. The technique was validated by analysis of standard reference materials, by dilution experiments and by laser-induced fluorescence.
Uranium Mass spectrometry Reference material Triton X Surfactant

"Use Of Inductively Coupled Mass Spectrometry For Trace-metal Analysis In Natural Systems"
Lab. Pract. 1988 Volume 37, Issue 1 Pages 61-63
Eaton, A.N.;Hutton, R.C.

Abstract: Standard reference materials, e.g., human serum, tomato leaves, pine needles and hair, were analyzed with use of a VG PlasmaQuad ICP-MS instrument operated with recommended parameters (cf. Hutton and Eaton, J. Anal. Atomic Spectrom., 1987, 2, 595). The results (tabulated) show the method to be accurate; detection limits are typically at the pg mL-1 level. Use of the instrument in the rapid multi-element semi-quantitative screening mode as well as in the conventionally calibrated mode is described. A rapid data-acquisition system (Transcan) is available that permits elementary screening even for transient signals, e.g., from flow injection sample introduction.
Metals, trace Mass spectrometry Multielement Reference material