| 摘要 |
<p>A method and means for identifying the authenticity and the genuine nature of a solid or liquid bulk material, by incorporating a marking composition containing at least one trace ion into the said bulk material, whereby the to -tal concentration of the incorporated trace ions in the market bulk material is chosen to be lower than the corresponding con -centration of the same ions in standard sea water. The authen -ticity and the genuine nature or the adulteration level of the marked bulk material can be tested in-the-field using electro -chemical sensors, and confirmed in the laboratory using a method such as atomic absorption spectroscopy, ion chromatography or mass spectrometry.</p> |
