摘要
建立了HNO_3-H_2O_2消解测定废水中的总铬的方法。该方法在0.020~0.300 mg/L范围内线性良好,实际样品测定结果与标准方法一致,检出限为0.003 76 mg/L,加标回收率在92.0%~103%之间。与标准方法相比,该方法还具有操作简单,浓酸使用量少,精密度高、准确度高等特点。
A determination method of total chromium in wastewater by HNO3-H2O2 digestion was established. This method showed good liner relationship in the range of 0.020~0.300 mg/L, and the method detection limit was 0.003 76 mg/L. The actual sample recovery was 92.0%~103%. Compared with the standard method, this method also has the advantages of easy operation, less using of acid, high precision and accuracy.
出处
《当代化工》
CAS
2017年第12期2525-2527,2531,共4页
Contemporary Chemical Industry
关键词
生活污水
制革废水
总铬
硝酸-过氧化氢
消解
Municipal sewage
Leather waste water
Total chromium
HNO3-H2O2
Digestion
