| 英文名称: | Standard substances/26 kinds of metal mixed standards/Beryllium, sodium, magnesium, aluminum, potassium, calcium, titanium, vanadium, chromium, manganese, iron, cobalt, nickel, copper, zinc, arsenic, selenium, strontium, molybdenum, silver, cadmium, tin, antimony, barium, thallium, lead/Medium: nitric acid + hydrofluoric acid |