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250 GRS. NAFTALINA (BOLAS ) TEC. BROMURO DE SODIO SOLUCION ACUOSA 10 % P V MAXIMO se agrega cianuro al zinc SULFATO FERROSO DE AMONIO CRISTAL ACS se agrega cianuro al zinc complejo y a cualquier otro metal pesado presente El método es una adaptación del método EPA 340 NAFTALINA (BOLAS ) TEC
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