世界核地质科学2025，Vol.42Issue(2)：414-422,9.
水载流原子荧光光谱法测定水系沉积物样品中As的方法研究与应用
Study and application on the method for determining arsenic in sediment samples using the water-carrier combined with atomic fluorescence spectrometry
李黎 1郭冬发 1王娅楠 1谢胜凯1
作者信息
- 1. 核工业北京地质研究院,北京 100029
- 折叠
摘要
Abstract
Accurately determining the arsenic(As)content in stream sediments can provide data for geological exploration.Traditional method for analyzing As is atomic fluorescence spectrometry(AFS)with diluted acid as the carrier,this study investigated the memory effect and stability of AFS using water as the carrier for As,analyzed the procedural blanks of As in two methods—mixed acids digestion and aqua regia extraction and the background of four reagents(HNO3,HCl,HF,HClO4)with AFS,discussed the impact of reagent backgrounds on the results.The results indicate that the AFS using water carrier has low memory effect and superior stability,and it only takes 30 s to finish the analysis of a sample.The total procedural blank of As in the mixed acid dissolution is higher than that in the aqua regia extraction,and the background in HF is the highest among the reagents,leading to a significant deviation of the reference values from the recommended values.The study established a method combining aqua regia extraction with water carrier AFS analysis,with a detection limit of 0.028 μg·g-1,accuracy from 0.14%to 4.0%,and precision better than 3.4%,making it suitable for rapid analysis of a large number of samples.关键词
砷/水系沉积物/本底/水载流/原子荧光法Key words
arsenic/stream sediment/background/water carrier/AFS分类
地质学引用本文复制引用
李黎,郭冬发,王娅楠,谢胜凯..水载流原子荧光光谱法测定水系沉积物样品中As的方法研究与应用[J].世界核地质科学,2025,42(2):414-422,9.
