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<br /> <br />TOTAL CYANIDE (CNT} <br />STANDARD EPA: <br />DISTILLATION, PH < 1 (HZSO4 + MGCLZ), SCRUBBED <br />IN NAOH, FOLLOWED BY COLORIMETRIC, TITRIME~TRIC <br />OR ELECTRODE METHOD OF CYANIDE DETERMINATION <br />WEAK ACID DISSOCIABLE CYANIDE (CNWAD} <br />DISTILLATION, PH 4.1 (ZN ACETATE + NA ACETATE), <br />SCRUBBED IN NAOH, FOLLOWED BY COLORIMET~iIC, <br />TITRIMETRIC OR ELECTRODE METHOD OF CYANIDE <br />DETERMINATION <br />,...~~,~ <br />