German standard methods for the examination of water, waste water and sludge - Cations (group E) - Part 33: Determination of manganese by atomic absorption spectrometry (E 33)— 16 стр.
German standard methods for the examination of water, waste water and sludge - General information (group A) - Part 11: Sampling of waste water (A 11)— 15 стр.
German standard methods for the examination of water, waste water and sludge; general information (group A); sampling from barrages and lakes (A 12)— 8 стр.
German standard methods for the examination of water, waste water and sludge; general information (group A); sampling of untreated water and drinking water (A 14)— 11 стр.
German standard methods for the examination of water, waste water and sludge; Sludge and sediments (Group S); Digestion using aqua regia for subsequent determination of the acid-soluble portion of metals (S7)— 6 стр.
