Publication details
Determination of phosphorus, potassium, and magnesium in fertilizers by inductively coupled plasma atomic emission spectrometry and comparison with other techniques
| Authors | |
|---|---|
| Year of publication | 1997 |
| Type | Article in Periodical |
| Magazine / Source | Journal of AOAC International |
| MU Faculty or unit | |
| Citation | |
| Field | Analytic chemistry |
| Keywords | DIFFERENT WAVELENGTHS; SPECTROMETRY |
| Description | Phosphorus, potassium, and magnesium in 12 fertilizers were determined by inductively coupled plasma-atomic emission spectroscopy (ICP-AES), and results were compared with those obtained by standard gravimetry (phosphorus) and atomic absorption spectrometry (AAS) (potassium and magnesium). ICP-AES and gravimetry were also used to determine water-and citrate-soluble phosphorus in fertilizers. In all cases, precision and accuracy of the ICP-AES method were satisfactory. Certain differences, probably not significant for routine analyses, were observed between ICP-AES and gravimetry in determinations of total and citrate-soluble phosphorus when the measurements were performed strictly under conditions of repeatability. |