Citation: Hua Lin XIE, Yu Jie LI, Xi Du NIE, Li Bo LI. Matrix Effects and Behaviors of Elements in Oxalic Acid Medium by Inductively Coupled Plasma Mass Spectrometry[J]. Chinese Chemical Letters, ;2006, 17(7): 945-948. shu

Matrix Effects and Behaviors of Elements in Oxalic Acid Medium by Inductively Coupled Plasma Mass Spectrometry

Hua Lin XIE ^1, ,
Yu Jie LI ² ,
Xi Du NIE ² ,
Li Bo LI ²

1.
Department of Chemistry, Hunan Institute of Technology, Hengyang 421008;
2.
College of Chemistry and Chemical Engineering, Central south university, Changsha 410083

Received Date: 4 January 2006

Fund Project: This work was supported by Hunan Natural Science Foundation of China (No. 05JJ40017) and Hunan Education Department of China (Project No. 05B064).

The influence of different concentration of oxalic acid matrix on elemental inductively coupled plasma mass spectrometry (ICP-MS) has been investigated. It has been proved that the sensitivity of analytes can be significantly enhanced by adding small amounts of oxalic acid medium with adjusted nebulizer flow-rate gas, especially for the elements with ionization potential between 9 and 11 eV. Oxalic acid, as an enhancement agent, can be used to compensate the signal depression caused by inorganic matrix and to improve the detection limits about two to eight times,for the hard-to-ionize elements in ICP-MS determination.
- ICP-MS,
- oxalic acid,
- enhancement effect
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