摘要
将超声波技术应用在纳氏试剂的配制过程中以加快HgCl2的溶解速度,此法配制得到的纳氏试剂更为稳定,测定污水与清洁水中氨氮更为准确。该法测定氨氮检出限低、精密度高,实测样品中氨氮的回收率为101.1%,相对标准偏差(n=6)为0.46%,曲线斜率稳定不受温度影响。且配制过程大大节约试剂,避免二次污染,具有广泛的推广价值。
Ultrasonic Waves was used to accelerate dissolution of Mercuric Chloridein in making Nessler. And Nessler gained by this method was more stable, with which the determination of Ammonia and Nitrogen in waste water and fresh water was more accurate. In sample detemination, the recovery of Ammonia and Nitrogen was 101.1 percent and the relative standard deviation （n=6） was 0.46 percent. And the slope of curves was not affected by the temperature and more reagents were saved and secondary pollution was avoided. So this method is worthy of being spreaded.
出处
《能源与节能》
2012年第1期57-58,共2页
Energy and Energy Conservation
关键词
污水
清洁水
氨氮
纳氏试剂
超声波
waste water
fresh water
Ammonia and Nitrogen
Nessler
ultrasonic waves
