Determination of total chromium in phosphate rocks by ion chromatography
Al-Shawi, AW; Dahl, R
| HERO ID | 1514251 |
|---|---|
| In Press | No |
| Year | 1999 |
| Title | Determination of total chromium in phosphate rocks by ion chromatography |
| Authors | Al-Shawi, AW; Dahl, R |
| Journal | Journal of Chromatography A |
| Volume | 850 |
| Issue | 1-2 |
| Page Numbers | 137-141 |
| Abstract | BIOSIS COPYRIGHT: BIOL ABS. Chromium(VI) is one of seven elements which is classified in the fertilizer industry as being harmful to plants and biological systems. Phosphate rocks represent the raw material for complex fertilizer production in the world. This paper investigates for the first time the determination of total chromium in phosphate rocks by ion chromatography. The developed analytical method involves the digestion of phosphate rocks with nitric acid followed by sample treatment of the resulting solution. The d erent phosphate rocks with atomic absorption spectrometry and inductively coupled plasma atomic emission spectrometry techniques, and cross-analysis data against an internationally certified phosphate rock standard were between 0.58 and 1.45%. Calibration curve between 0.2 and 0.9 mug/ml was excellent, and the method has a detection limit for Cr(VI) of 0.05 ng. The developed method offers a fast, a reliable and an alternative procedure for the determination of total chromium in p |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Language Text | eng |
| Keyword | BIOCHEMISTRY/METHODS; BIOCHEMISTRY; Biochemical Methods-General; Biochemical Studies-General; 18540-29-9; 7440-47-3 |