摘要
采用钼锑分光光度法测定总氮,考察了在提高温度的条件下,缩短消解时间对测定结果的影响。试验结果表明,调节氢氧化钠和过硫酸钾的用量,在同一溶液内测定总氮、总磷,并且将测定条件改为126～128℃,消解10min,其测定结果和与标准方法对照,精密度及准确度均令人满意。
The molybdenum antimony spectrophotometry is adopted to determine the total nitrogen and the effect of shortening the waiting time on the measured results at temperature rise is also inspected.The test results show that comparing to standard method the accuracy of the measured results is setisfactory when the total nitrogen and phosphorus is determined within the same solution by adjusting the dosage of sodium hydroxide and potassium persulfate at 126～128℃ with a waiting time of 10min.
出处
《环境工程》
CAS
CSCD
北大核心
1999年第6期66-68,共3页
Environmental Engineering
