The paper presents studies regarding variability of soil chemical properties in Romania. Determination of soil physical and chemical properties is performed using laboratory instrumentation. The soil samples are taken directly from the field using specific instruments. The samples are generally stored in airtight plastic bags and vacuumed eventually. They are transported to the laboratory in order to be analysed or the analysis is immediately made with the aid of some portable analysers It is possible to increase the number of the soil samples and accuracy using VIS–NIR (Visible - Near Infrared Spectrophotometry) and scanning of agricultural surfaces with the aid of specialized equipment that simultaneously can scan the optical properties of the soil, temperature and soil moisture, all  being stored in data files. Information obtained from a GPS device is added to files. In this way, the information is geospatial located in order to be also processed in terms of their position. On the other hand, this information can be used after their processing together with other factors to improve the soil quality from agronomic point of view and reducing its pollution. The experimental results on acquiring the soil spectra on a given surface, as well as, the achievement of maps afferent to them are also presented.