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地面水及地下水中常有不同浓度的游离氨存在,水中氨的来源主要由有机物在微生物和氧的作用下逐渐分解而来。水中氨型氮一般含量对人体并无危害,但有氨型氮存在表示水源中的物质正在分解之中,氨型氮如果太多就表示水源在不久前受过严重污染。因此,饮用水中氨型氮不得超过0.02毫克/升。氨型氮的测定一般采用纳氏试剂比色法,该法对于无色、透明的清洁水样,可直接取样分析,但对有色、混浊及含干扰物质较多的污水和工业废水,就必须将氨型氮自水
Surface water and groundwater often have different concentrations of free ammonia exist, the source of ammonia in water mainly by the decomposition of organic matter in the role of microorganisms and oxygen gradually. Ammonia nitrogen in water generally does not harm the human body, but the existence of ammonia nitrogen means that the water is decomposing substances, ammonia nitrogen, if too much, said the water has been heavily polluted recently. Therefore, ammonia nitrogen in drinking water must not exceed 0.02 mg / L. The determination of ammonia nitrogen is generally used Nessler reagent colorimetric method for the colorless, transparent clean water samples can be directly sampled and analyzed, but for colored, cloudy and contains more interfering substances and industrial wastewater wastewater, you must The ammonia nitrogen from water