DIN 38404-14:1987 德国对水、废水和污泥的标准检验法.物理化学参数(C组).确定饮用水、地下水和地表水的总α放射性强度(C14)
German standard methods for the examination of water, waste water and sludge; physical-chemical parameters (group C); determination of total alpha activity concentration in potable water, ground water and surface water (C 14)