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Table A2. Laboratory methods used for the analysis of water quality samples, with standard reference <br />page numbers. <br />1974 14th Ed. <br />EPA Standard <br />Parameter Unit Method Methods Methods <br />Page No. Page No. <br />Acidity, as CaC03 mg/1 Titration 1 273 <br />Alkalinity, as CaC0 mg/1 Manual or automated electrometric 3 278 <br /> 3 titration to pH 4.5, or automated method 5 --- <br />Aluminum mg/1 Digestion followed by automatic absorption --- 171 <br /> or colorimetric 92 152 <br />Ammonia, as N mg/1 Manual distillation (at pH 9.5) followed --- 410 <br /> by nesslerization, titration, electrode, 159 412 <br /> automated phenolate 165 --- <br /> 168 --- <br />Arsenic mg/1 Digestion followed by silver diethyldithio- --- 285 <br /> carbamate, or atomic absorption 9 283 <br /> 95 159 <br />Bicarbonate mg/1 Titration 278 --- <br />Boron mg/1 colorimetric (Curcumin) 13 287 <br />Cadmium mg/1 Digestion followed by atomic absorption or 101 148 <br /> colorimetric --- 182 <br />Calcium mg/1 Digestion followed by atomic absorption 103 148 <br /> or titration --- 182 <br />a <br />N <br />• • <br />~~, <br />