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

作　　者：王云 赵立晶[1] 黄二全 陈洋 肖靖泽[1] 谭心炜 Wang Yun;Zhao Lijing;Huang Erquan;Chen Yang;Xiao Jingze;Tan Xinwei(Beijing Titan Instrument Co.Ltd,Beijing 100015,China)

机构地区：[1]北京吉天仪器有限公司,北京100015

出　　处：《绿色科技》2024年第4期152-157,171,共7页Journal of Green Science and Technology

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。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 experimental conditions,the sensitivity was increased by 4 times;the detection limit of the method was 0.5μg/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 samples/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 

分 类 号：X834[环境科学与工程—环境工程]