Sensitive and selective ion chromatographic method for the determination of trace beryllium in water samples
Bashir, W; Paull, B
| HERO ID | 1278227 |
|---|---|
| In Press | No |
| Year | 2001 |
| Title | Sensitive and selective ion chromatographic method for the determination of trace beryllium in water samples |
| Authors | Bashir, W; Paull, B |
| Journal | Journal of Chromatography A |
| Volume | 910 |
| Issue | 2 |
| Page Numbers | 301-309 |
| Abstract | A selective and sensitive ion chromatographic method has been developed for the determination of beryllium in a number of water samples at low-microg/l concentrations. The separation was performed on a 250x4.0 mm I.D. iminodiacetic acid functionalised silica gel column. Chromatographed Be(II) was detected using visible detection at 590 nm following post-column reaction with chrome azurol S (CAS). The optimum separation and derivatisation conditions were studied in detail. The optimum eluent conditions were found to be 0.4 M KNO3, adjusted to pH 2.5 using HNO3, with optimum post-column detection being achieved using a solution containing 0.26 mM CAS, 2% Triton X-100, 50 mM 2-(N-morpholino)ethanesulfonic acid, pH 6.0. Under the above conditions, the concentration detection limit for Be(II) was found to be 3 microg/l in a standard solution and 4 microg/l in a typical tap water sample, using a 250 microl injection. The method was linear over the investigated range of 10 microg/l to 10 mg/l and highly reproducible. The method was successfully applied to a number of water samples of varying matrix complexity, including simulated seawater, and also to a natural freshwater certified reference material NIST 1640. |
| Doi | 10.1016/s0021-9673(00)01242-5 |
| Pmid | 11261725 |
| Wosid | WOS:000166973000013 |
| Is Certified Translation | No |
| Dupe Override | No |
| Comments | Source: Web of Science 000166973000013 |
| Is Public | Yes |
| Language Text | English |
| Keyword | water analysis; ion chromatography; beryllium |
| Is Qa | No |