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饮用水中硝酸盐氮的测定方法,目前比较常用的是酚二磺酸法。该法虽有许多优点,但有需蒸干水样,试剂制备比较麻烦等缺点。最近有人提出麝香草酚法不必蒸干水样,但要经萃取和反萃取。我们用麝香草酚作试剂直接比色测定饮用水中硝酸盐氮,使方法大为简化,而且快速,准确。已应用于测定浅井水和自来水中的硝酸盐氮
Determination of nitrate nitrogen in drinking water, the more commonly used is phenol disulfonic acid method. Although the law has many advantages, but there is a need to evaporate water samples, reagents preparation more cumbersome and other shortcomings. Recently, it was suggested that the thymol method does not have to be evaporated to dry the water but to be extracted and back-extracted. We use thymol as a reagent for direct colorimetric determination of nitrate nitrogen in drinking water, making the method greatly simplified, and fast and accurate. It has been applied to the determination of nitrate nitrogen in shallow and tap water