|
| Silica for foundry Determination of iron oxide, aluminium oxide, calcium oxide, magnesium oxide, titanium oxide, potassium oxide or sodium oxide Inductively coupled plasma atomic emission spectrometry |
|
Received:December 06, 2018
Revised:February 19, 2019
Accepted:December 21, 2018
Published Online:May 27, 2019
|
| View Full Text View/Add Comment Download reader |
| DOI：doi:10.3969/j.issn.2095-1035.2019.02.015 |
| KeyWord:inductively;coupled plasma;atomic emission;spectrometry silica;for foundry;Al2O3 Fe2O3 MgO;K2O、Na2O;CaO |
| Author | Institution |
| Chen Rong |
KOCEL GROUP LIMITED |
|
| Hits: 1787 |
| Download times: 1751 |
| Abstract: |
| A method for the determination of iron oxide, aluminum oxide, calcium oxide, magnesium oxide, titanium oxide, potassium oxide and sodium oxide in foundry silica sand by inductively coupled plasma atomic emission spectrometry was established. The selection and optimization of the dissolution method were studied. The linear range of the method was determined under the optimal instrumental analysis using nitric acid, hydrofluoric acid treatment, perchloric acid treatment, elemental analysis line selection, matrix and coexisting elements. Correlation coefficient and detection limit. The accuracy and precision of the method were evaluated using the analytical results of three grades of silica sand. The detection limit of iron Fe is 0.0117 ug/ml, Al is 0.0321 ug/ml, Ca is 0.2730 ug/ml, Mg is 0.00321 ug/ml, Ti is 0.0021 ug/ml, K is 0.1566 ug/ml, Na is 0.00044 ug/ml. The relative standard deviation of the data of 5 times indicates that the method has good stability. The method is suitable for the determination of the content of iron oxide, aluminum oxide, calcium oxide, magnesium oxide, titanium oxide, potassium oxide and sodium oxide in the silica sand for casting. |
| Close |
|
|
|