Hello Dr. Parkhurst I am trying to create my own database by modifying the existing Minteq.dat. I have added a new surface species trying to mimic the complexation of cationic metals with humic or fulvic acids and I have not added or altered anything else in the database. When I hit RUN, the program comes back with this error as seen in my output file: DATABASE C:\Program Files\USGS\Phreeqc Interactive 2.4.2 Alpha\adrHAone.dat ERROR: DATABASE must be the first keyword in the input file. TITLE Fulvic acids.--Cu complexation with Fulvics using WHAM constants SURFACE_SPECIES Fulvic_cOH = Fulvic_cOH log_k 0.0 Fulvic_pOH = Fulvic_pOH log_k 0.0 Fulvic_pOH = Fulvic_pO- + H+ log_k -9.64 Fulvic_cOH = Fulvic_cO- + H+ log_k -4.02 Fulvic_cOH + Cu+2 = Fulvic_cOCu+ + H+ log_k -1.5 Fulvic_pOH + Cu+2 = Fulvic_pOCu+ + H+ log_k -0.8 SURFACE 1 Fulvic_cOH 0.0033 600 0.01 Fulvic_pOH 0.0017 diffuse_layer 1e-008 This is my surface master species as it is in the database: SURFACE_MASTER_SPECIES Hfo_s Hfo_sOH Hfo_w Hfo_wOH Fulvic_c Fulvic_cOH Fulvic_p Fulvic_pOH I do not see where I am going astray. I think that I have all of the necessary keywords and master species and I have tried changing the database name but nothing seems to work. Do you know how I can fix this error? Thank you Aaron Redman
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