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On-line digestion in a focused microwave-assisted oven for elements determination in orange juice by inductively coupled plasma optical emission spectrometry
| Content Provider | Scilit |
|---|---|
| Author | Fili, Sabrina P. Oliveira, Elisabeth Oliveira, Pedro V. |
| Copyright Year | 2003 |
| Description | A flow injection system coupled to focused microwave-assisted oven was used for on-line orange juice sample digestion for determination of Ca, Cu, Fe, K, Mg, Mn, Na, P, and Zn by inductively coupled plasma optical emission spectrometry. The reactor coil was a PTFE tube (4.0 m long and 1.6 mm i.d.) positioned into the commercial glass tube of the focused microwave oven. Aliquots of 500 muL of sample and 1000 muL of reagent (80% v/v HNO3) were mixed in a confluence and carried out to the reactor coil by air carrier. The relative standard deviation for five replicates of sample was lower than 5.0%. Good recoveries varying from 91 to 111% were obtained for added concentrations of the interest elements. The results obtained using the proposed digestion system are in agreement with those obtained for total digestion at the 95% confidence level. With this on-line digestion system was possible to carry out 12 samples h-1, minimizing contamination, saving consumption of samples and reagent and low residue generation. |
| Related Links | http://www.scielo.br/pdf/jbchs/v14n3/15906.pdf http://www.scielo.br/scielo.php?script=sci_pdf&pid=S0103-50532003000300016&lng=en&nrm=iso&tlng=en |
| Ending Page | 441 |
| Page Count | 7 |
| Starting Page | 435 |
| ISSN | 01035053 |
| e-ISSN | 16784790 |
| DOI | 10.1590/s0103-50532003000300016 |
| Journal | Journal of the Brazilian Chemical Society |
| Issue Number | 3 |
| Volume Number | 14 |
| Language | English |
| Publisher | FapUNIFESP (SciELO) |
| Publisher Date | 2003-05-01 |
| Access Restriction | Open |
| Subject Keyword | Journal of the Brazilian Chemical Society Analytical Chemistry Food Science and Technology line Digestion Orange Juice Focused Microwave Oven Atomic Emission |
| Content Type | Text |
| Resource Type | Article |
| Subject | Chemistry |
