应用哈希仪器消解测定水和废水中总磷  

The Application of HACH Apparatus to the Total Phosphorus Determination in Water and Waste Water

作　　者：王颖娜[1] 胡艳[1] 李德豪[1] 杨祥[2] 

机构地区：[1]茂名学院,广东茂名525000 [2]中国地质大学,湖北武汉430074

出　　处：《茂名学院学报》2008年第1期14-16,共3页Journal of Maoming College

摘　　要：建立了利用HACH公司的COD消解一比色管、DRB200 COD加热器及DR890便携式比色计测定水体总磷的方法。确定最佳的操作条件为：过硫酸钾质量分数4％，消解温度120℃，消解时间15min，抗坏血酸溶液的质量分数2％，钼酸盐使用液浓度为储备液1，4。该方法具有较好的精密度和准确度，检出限为0．039nag·L^-1，实际样品分析的相对标准偏差（RSD）在1．5％以下，加标回收率为90．0％．112％。This paper has brought about a method of determining the total phosphorus in water and waste water by using the COD digest - colorimetrie tube, DRB200 COD heater and DR890 portable colorimeter. The optimal operation condition was verified and the accuracy and precision was satisfactory： detection limit was 0.039 mg·L^- l ; relative standard deviation （RSD） of the specimen was below 1.5 % ; stan- dard recovery of this method was between 90.0% and 112%.

关 键 词：总磷 COD消解-比色管 DRB200 COD加热器 DR890便携式比色计 

分 类 号：O613.62[理学—无机化学]