TITLE

Electrothermal vaporization dynamic reaction cell inductively coupled plasma mass spectrometry for the determination of Fe, Co, Ni, Cu, and Zn in biological samples

AUTHOR(S)
Yen-Jia Tseng; Yu-Duan Tsai; Shiuh-Jen Jiang
PUB. DATE
April 2007
SOURCE
Analytical & Bioanalytical Chemistry;Apr2007, Vol. 387 Issue 8, p2849
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Slurry sampling electrothermal vaporization dynamic reaction cell inductively coupled plasma mass spectrometry (ETV-DRC-ICP-MS) has been applied to determine Fe, Co, Ni, Cu, and Zn in biological samples. The influences of instrument operating conditions and slurry preparation on the ion signals were reported. Pd was used as the modifier. The effectiveness of the ETV sample introduction technique and dynamic reaction cell in alleviating various spectral interferences in ICP-MS analysis has been demonstrated. This method has been applied to determine Fe, Co, Ni, Cu, and Zn in NIST SRM 1573a tomato leaves reference material and NRCC DORM-2 dogfish muscle reference material and also real samples such as a tea and a swordfish sample purchased locally. Since the sensitivities of the elements studied in slurry and aqueous solution were different, an analyte addition technique was used for the determinations. The analytical results of the reference materials agreed with the certified values. The precision between sample replicates was better than 6% for all determinations. The method detection limit estimated from analyte addition curves was 0.01, 0.006, 0.007, 0.004, and 0.006 μg g−1 for Fe, Co, Ni, Cu, and Zn, respectively, in the original biological samples.
ACCESSION #
24441183

 

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