The Latvian Defense Ministry has ordered an unspecified number of Patria 6x6 armored personnel carriers for Ukraine, the country's ministry announced on Feb. 10. Latvia has been one of Kyiv's ...

All the samples were analyzed in triplicates. The matrix blank sample was prepared exactly as samples. Standard addition calibration levels were subsequently prepared by spiking 10, 25, 50, 100, 250, ...