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| Simultaneous Determination of Oxygen, Nitrogen and Hydrogen in Nd-Fe-B by Pulsed Melting -Time of Flight Mass Spectrometry |
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Received:March 29, 2013
Revised:September 06, 2013
Published Online:December 19, 2013
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| DOI：doi:10.3969/j.issn.2095-1035.2013.04.009 |
| KeyWord:pulse-heating; time of flight mass spectrometry; Nd-Fe-B; oxygen; nitrogen; hydrogen |
| Author | Institution |
| YANG Qianqian |
NCS Testing Technology Co., Ltd., Beijing, China |
| MA Hongquan |
NCS Testing Technology Co., Ltd., Beijing, China |
| GUO Feifei |
NCS Testing Technology Co., Ltd., Beijing, China |
| WU Xinpei |
NCS Testing Technology Co., Ltd., Beijing, China |
| LI Meiling |
NCS Testing Technology Co., Ltd., Beijing, China |
| SHEN Xuejing |
NCS Testing Technology Co., Ltd., Beijing, China |
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| Abstract: |
| An quantative method for the determination of O, N and H in Nd-Fe-B sample by pulsed melting time-of-flight mass spectrometry was established. Under the selected conditions, the detection limit of O, N and H is 0.021 μg/g, 0.060 μg/g, 0.002 μg/g, respectively. The calibration curves for the three elements were obtained using a series of CRMs samples. All linear correlation coefficients R2 were better than 0.99. This method has been applied to analyze real Nd-Fe-B samples. The analytical results by the new method are consistent with those by the traditional pulsed melting IR and TCD(thermal conductivity detection ) method. |
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