The balance is established 18 days later, whereupon 90Y is separated on the collector Al(OH)3, which is then roasted to oxide that is afterward measured on the ��-�� anticoincidence counter [17].The content of heavy metals in drinking water has been determined by means of the atomic absorption spectrophotometer; the detection of the metals: Pb, Cd, Cu, Zn, Ni, Co, Mn, Fe and Cr being performed by using the AAS flame technique, using the following wavelengths indicated in Table 1.Table 1.The drinking water sample had previously been concentrated whereupon the aspiration through the system of the atomic absorption spectrophotometer was conducted. In the case of iron and zinc it is possible to carry out a direct determination without water concentration.

Standard solutions of heavy metals: blind assay, 0.

2, 0.5 and 1.0 mg/dm3 have been supplemented by hydrochloric acid in the concentration of 2 mol/dm3.Mercury has been determined after the addition of a 2 % solution of KMnO4 to the water sample because of the conversion of mercury from organo-mercuric compounds into the ionic form that can be defined, and the excess KMnO4 prevents the evaporation and loss of metals. Measurements were taken after 24 hours, upon the addition of 20 % solution of SnCl2 to the sample. The obtained elemental mercury in a vapour state has been determined by the flameless atomic absorption spectrophotometry method (�� = 253.7 nm).3.?Results and DiscussionEvaporation of 1.0 dm3 of water to the dry matter resulted in 0.

3 g of the scale. The results of the scale sample analysis, in accordance with the JUS B.

B8.070 standard, are given in Table 2.Table 2.Results of the scale sample analysis.Chemical substances found in the scale sample and their AV-951 calculated concentrations in water have been compared with the concentrations Brefeldin_A of these substances in the WHO Guidelines. On the basis of the obtained results, the water samples belong t
Commercial large format digital camera (LFDC) systems have been utilized for airborne collection of multispectral imagery since 2001. These systems include the Leica Geosystems ADS40, the Intergraph Z/I Imaging? DMC, and the Vexcel UltraCam.

Large format digital camera systems collect imagery with detail comparable to large format film and are defined by [1] as those capable of acquiring an image frame of at least 36 megapixels. The ADS40, DMC, and UltraCam have been on the market longest and are the most commonly available LFDC systems.LFDC systems are able to efficiently collect and process wide swaths of high spatial resolution imagery by direct digital capture.