Minimization of sample volume with air-segmented sample injection and the simultaneous determination of trace elements by ICP-MS.
The application of inductively coupled plasma mass spectrometry (ICP-MS) to forensic chemistry was studied. The developed method, air-segmented sample injection (ASSI) coupled with ICP-MS, allowed the determination of about 25 elements at the sub-ppb level with only 0.2 ml of a sample solution. The optimum sample flow rate was found to be 0.4 ml min(-1), along with a sample suction time of 30 s. The proposed method was validated by determining trace elements in river-water certified reference material (SLRS-4) issued by National Research Council Canada. The analytical results of the proposed method were in good agreement with the certified values. This method was successfully applied to a human hair sample, the volume of which was 3 ml.
Noguchi
Osamu
O
Graduate School of Natural Science and Technology, Okayama University, Okayama, Japan. op-euaec907@pref.okayama.jp
Oshima
Mitsuko
M
Motomizu
Shoji
S
D000388:Air; D002138:Calibration; D017022:Flow Injection Analysis / Q000295:instrumentation* / Q000379:methods*; D006197:Hair / Q000737:chemistry; D006801:Humans; D008297:Male; D013058:Mass Spectrometry / Q000295:instrumentation* / Q000379:methods*; D015203:Reproducibility of Results; D045483:Rivers / Q000737:chemistry; D012680:Sensitivity and Specificity; D013997:Time Factors; D014131:Trace Elements / Q000032:analysis* / Q000737:chemistry*
D014131:Trace Elements