化工矿产地质2024，Vol.46Issue(1)：76-81,6.
超声辅助—碱溶液提取火焰原子吸收分光光度法测定土壤和沉积物中的六价铬
Ultrasound-assisted/Alkali Solution-Determination of Hexavalent Chromium in Soil and Sediment by Flame Atomic Absorption Spectrometry
刘帅涛 1尹学旺 1韩婷婷 1井小静 1岳海丽 1李明阳1
作者信息
- 1. 中化地质矿山总局河南地质局,河南 郑州 450000
- 折叠
摘要
Abstract
A method for the determination of hexavalent chromium in soil and sediment by ultrasonic-assisted flame atomic absorption spectrometry with alkali solution extraction has been established.NH4OH-NH4Cl solution with pH=11 is used as extracting agent,ultrasonic-assisted extraction is performed in hot water at 98±2℃ for 60min,centrifuged for separation,and then anhydrous sodium sulfate is added as signal intensifier for determination.The drawbacks of cumbersome extraction steps,generating a large amount of precipitation,and low separation efficiency in HJ1082-2019 method are avoided.The detection limit of the method is 0.49 mg/kg,the determination limit is 1.96 mg/kg,the relative standard deviation(RSD,n=6)is 2.9％～3.4％,and the recovery rate of participating is 94.2-100.8％.The method has the advantages of simple operation,high accuracy and high efficiency of batch processing samples.关键词
原子吸收/超声/碱溶液/六价铬/土壤和沉积物Key words
Atomic absorption/Ultrasonic/Alkali solution/Hexavalent chromium/Soil and sediment分类
化学化工引用本文复制引用
刘帅涛,尹学旺,韩婷婷,井小静,岳海丽,李明阳..超声辅助—碱溶液提取火焰原子吸收分光光度法测定土壤和沉积物中的六价铬[J].化工矿产地质,2024,46(1):76-81,6.
