流动注射分光光度法测定海水中活性硅酸盐
Determination of Active Silicates in Seawater by Flow Injection Spectrophotometry
王云 1赵立晶 1黄二全 1陈洋 1肖靖泽 1谭心炜1
作者信息
- 1. 北京吉天仪器有限公司,北京 100015
- 折叠
摘要
采用流动注射法快速准确测定海水中硅酸盐,该方法可很好地解决方法灵敏度和重现性问题.在优化好的实验条件下,灵敏度提高4倍,方法检出限为0.5μg/L,精密度0.18％,线性范围在0.0096～0.96 mg/L具有良好的线性关系(相关系数0.9999),实际海水样加标回收率为92.4％～92.5％,重复性为0.11％,检测频率为33样/h.方法具有分析快速、精密度和准确度高、操作简单等优点,是环境水中硅酸盐分析的理想方法.
Abstract
The flow injection method is a fast and accurate method for the determination of silicates in seawater,which is a good solution to the sensitivity and reproducibility problems of the method.Under the optimized ex-perimental conditions,the sensitivity was increased by 4 times;the detection limit of the method was 0.5 μg/L;the precision was 0.18％;the linear range was 0.0096～0.96 mg/L;the correlation coefficient was 0.9999;the actual recovery rate of seawater samples was 92.4％～92.5％,and the repeatability was 0.11％at a frequency of 33 sam-ples/hour.The method has the advantages of fast analysis,high precision and accuracy,and simple operation,which is an ideal method for silicate analysis in environmental water.
关键词
流动注射/海水/硅酸盐/灵敏度Key words
flow injection/seawater/silicas/sensibility引用本文复制引用
出版年
2024
NETL
NSTL
万方数据