Samples collected obtained during the monthly periods: 



■ March - April; May; June; July - September 

 - May; June; July; August - September 



Abbreviations: AA - atomic absorption; AE - atomic emission; cone. - concentration; CVAF - cold vapor atomic fluorescence; diss - dissolved; GF - 

 graphite furnace; IC - ion exchange chromatography; ICP - inductively coupled plasma; ISE - ion-selective electrode; LIP - Laser 

 Induced Phosphorescence; MS - mass spcctrography ; Org - organic; tot/rec - total recoverable 



A2-24 



