DIN EN 12918:1999-11 水質二氯甲烷萃取氣相色譜法測定水中對硫磷、甲基對硫磷和其他一些有機磷化合物
Water quality - Determination of parathion, parathion-methyl and some other organophosphorus compounds in water by dichloromethane extraction and gas chromatographic analysis; German version EN 12918:1999