流动化学分析法测定海水中硝酸盐亚硝酸盐  

Analysis of Nitrate & Nitrite in seawater by Continuous Flow Analyzer

作　　者：林建杰[1] 

机构地区：[1]福州市海洋与渔业技术中心,福建福州350026

出　　处：《福建分析测试》2013年第3期44-48,共5页Fujian Analysis & Testing

摘　　要：采用萘乙二胺分光光度法测定亚硝酸盐、锌-镉还原法测定硝酸盐与连续流动化学分析法进行同时测定对比,结果采用t检验法的"成对数据的比较"来判定,两种方法针对单个盐度点样品无显著性差异。采用流动化学分析法,进行浓度及盐度适用范围实验;本次方法实验显示硝酸盐氮和亚硝酸盐氮含量的适用范围分别为0.005～1.0 mg N/L和0.004～0.1 mg N/L;盐度适用范围实验显示盐度0～40的水样测定结果一致性良好。Comparison Nitrate ＆ Nitrite are determined simultaneously in water by using N- （1-naphthyl） ethylenediamine dihydrochloride by spectrophotometric method, Analysis of nitrate in water by using Zinc-cadmium reduction method and Continuous flow analysis. By using log comparison of the ＇t-test＇ method, Results by using ＇t-test＇ ＂pairwise comparison of data＂ to determine, there is no significant difference between these 2 methods for same salinity samples.To using Continuous flow chemical analysis to do Applicable scope experiment of concentration and Salinity. it was found that the analytical ranges are 0.005-1.0 mg N/L （Nitrate） and 0.004-0.1 mg N/L （Nitrite）.Salinity of samples can be in the range of 0-40. Water samples with the salinity within the captioned range will; get a good results.

关 键 词：流动化学 海水 硝酸盐 亚硝酸盐 

分 类 号：O657[理学—分析化学]