摘要
采用气相分子吸收光谱法测定海水中总氮。结果表明,线性良好,相关系数大于0.999,方法检出限为0.05 mg/L,水样加标回收率范围为95.2~102%,RSD范围为1.6~4.6%。与过硫酸钾氧化法的实样比对,两种方法测定结果无显著性差异。气相分子吸收光谱法具有操作简便、分析速度快、试剂消耗少,适合批量测定等优点。
The results showed that the linear regression was good,the correlation coefficient was over 0.999,the detection limit was 0.05 mg/L,the relative recovery range of water sample was 95.2%-102%,and the RSD range was 1.6%-4.6%.Compared with the potassium persulfate oxidation method,there was no significant difference between the two methods.This method is convenient,efficient,of low reagent consumption,and suitable for detection of large quantities of seawater samples.
作者
任朝兴
黄国娟
刘燕
蓝文陆
Ren Chaoxing;Huang Guojuan;Liu Yan;Lan Wenlu(Guangxi Marine Environmental Monitoring Centre,Beihai 536000,China)
出处
《分析仪器》
CAS
2020年第2期40-43,共4页
Analytical Instrumentation
基金
广西科技重大专项(桂科AA17129001)。
关键词
气相分子吸收光谱法
过硫酸钾氧化法
海水
总氮
Molecular absorption spectrometry
Potassium persulfate oxidation
Seawater
Total nitrogen
