1. CQ-VR, Chemistry Research Centre, Department of Biology and Environment, Universidade de Trás-os-Montes e Alto Douro; 5001-801 Vila Real Portugal
2. Chemistry Department, Universidade de Trás-os-Montes e Alto Douro; Vila Real Portugal
3. CQ-VR, Chemistry Research Centre; Chemistry Department, Universidade de Trás-os-Montes e Alto Douro; Vila Real Portugal