[Determination of se in blood and tissue of animal samples by normal ICP-MS and ICP-MS with octupole reaction system].
The Se in the blood and tissue of animal samples was determined by ICP-MS instrument. The method was not only proved simple and rapid, but also showed satisfying precision and low detection limit. The optimum conditions of ICP-MS for the method were investigated. Results by the digestion method, the isotopes selection, and the difference between the normal ICP-MS without ORS (Octopole Reaction System) and the ICP-MS with ORS were compared, which afford reference to the determination of the same kinds of sample. The standard materials were determined to proved the reliability of the normal ICP-MS and the ORS-ICP-MS methods. The ORS-ICP-MS can effectively remove the interference based on polyatomic ions, so the the detection limits were lowed, and the accuracy was improved. The detection limits of the method for normal ICP-MS is 0.024 ng x g(-1) and that for ORS-ICP-MS is 0.004 6 ng x g(-1), the RSDs are between 1.8% and 5.5%, and the recoveries of the method are in the range of 90.8%-107.2%.
Wang
Ying-feng
YF
The Analysis Test Center, Capital Normal University, Beijing 100048, China.
Liu
Cui-mei
CM
Liu
Shao-qing
SQ
Shi
Yan-zhi
YZ
Chen
Yu-hong
YH
D000818:Animals; D006168:Guinea Pigs; D019216:Metals, Heavy / Q000097:blood / Q000378:metabolism; D015203:Reproducibility of Results; D012643:Selenium / Q000097:blood* / Q000378:metabolism*; D021241:Spectrometry, Mass, Electrospray Ionization
D019216:Metals, Heavy; D012643:Selenium