摘要
X射线荧光光谱法(XRF)作为一种简便、高效、可靠的无机元素测定方法,在大气颗粒物、土壤和沉积物、固体废物等环境样品分析方面得到广泛应用,并具有广阔的发展前景。在大气颗粒物样品分析中,环境空气样品采样滤膜本底值可能大于方法测定下限;在土壤样品分析中,土壤样品制备流程烦琐。为了解决上述问题,本文参考相关标准,采用X射线荧光光谱法对分别经超声清洗、酸浸泡处理的石英滤膜和不同粒径的土壤样品进行测定。结果表明,经过超声清洗或酸浸泡处理后,石英滤膜本底值有所下降,但个别元素本底值过高,处理后仍然不能满足相关标准要求;不同粒径的土壤样品测定结果基本一致,因此在时效紧急或制样条件不便的特殊情况下,可用100目土壤样品代替200目土壤样品,然后采用X射线荧光光谱法进行分析。
As a simple,efficient and reliable method for the determination of inorganic elements,X-ray fluorescence spectrometry(XRF)has been widely used in the analysis of atmospheric particulate matter,soil and sediment,solid waste and other environmental samples,and has broad prospects for development.In the analysis of atmospheric particulate matter samples,the background value of the filter membrane sampled from the ambient air sample may be greater than the lower limit of the method;in soil sample analysis,soil sample preparation process is cumbersome.In order to solve the above problems,with reference to the relevant standards,XRF is used to determine the quartz filter membrane after ultrasonic cleaning and acid immersion treatment respectively and soil samples with different particle sizes in this paper.The results show that the background value of quartz filter membrane decreases after ultrasonic cleaning or acid immersion treatment,but the background value of some elements is too high,and still can not meet the requirements of relevant standards after treatment;the determination results of soil samples with different particle sizes are basically the same,therefore,under special circumstances of urgent time or inconvenient sample preparation conditions,100 mesh soil samples can be used instead of 200 mesh soil samples,and then XRF is used for analysis.
作者
何乐韵
冉艳琼
罗碧容
曹阳
HE Leyun;RAN Yanqiong;LUO Birong;CAO Yang(Sichuan Ecological and Environmental Monitoring Center,Chengdu 610091,China)
出处
《中国资源综合利用》
2023年第2期17-22,共6页
China Resources Comprehensive Utilization
关键词
X射线荧光光谱法
滤膜
大气颗粒物
土壤
X-ray fluorescence spectrometry
filter membrane
atmospheric particulate matter
soil
