微波联合消解流动注射光度法测定水中总氮和总磷  

Determination of TN and TP in Water with Microwave Digestion and Flow Injection Spectrophotometry

作　　者：苏苓[1] 张海涛[1] 王庆霞[1] 吴华广 

机构地区：[1]徐州建筑职业技术学院,江苏徐州221008 [2]徐州矿业集团环境监测站,江苏徐州221000

出　　处：《环境监测管理与技术》2007年第1期25-27,共3页The Administration and Technique of Environmental Monitoring

基　　金：江苏省高校自然科学研究基金资助项目(05KJD150219);徐州建筑职业技术学院青年科研基金资助项目(JYA304-06)

摘　　要：利用微波联合消解水样，采用流动注射分析技术，建立了在线测定水中总氮和总磷的快速分析方法。优化了试验条件，在线性范围内，总氮和总磷的工作曲线线性关系良好，检出限分别为0．03mg／L和0．01mg／L，相对标准偏差分别为1．5％和1．2％，加标回收率分别为96．7％～103％和98．8％-102％。An on-line method was established to determinate total nitrogen （TN） and total phosphorus （TP） in water sample which is digested by microwave and detected with flow injection spectrophotometry. After the experimental condition was optimized, the test result indicated linear relations of TN and TP calibration curves were excellent in their standard concentrations, the limits of detection of TN and TP are 0.03 mg/L and 0.01 mg/L respectively, the relative standard deviation TN 1.5% and TP 1.2%, spike recoveries TN 96.7% - 103% and TP 98.8% - 102%.

关 键 词：微波消解 流动注射 分光光度法 总氮 总磷 水质 

分 类 号：O657.32[理学—分析化学]