摘要
为了获得具有针对性的土壤土质改善方法,对土质中重釐属镉含量进行监测。传统方法受到外界因素的影响,导致土壤中重釐属铬的检测效果不佳。为此,引入光谱分析,提出了基于光谱分析的土壤重釐属镉含量无损检测方法。提取土壤样本中重釐属含量,制定LIBS光谱的校准曲线,检测样本在不同灰化温度下的吸光度值。设计土壤釐属镉含量检测流程,结合Saha方程对土壤样本中重釐属镉含量进行计算,并优化土壤检测步骤,进一步利用Zeeman-352型原子吸收光谱仪和PHS-6C型精密p H检测计实现对土壤重釐属镉含量的无损检测。为验证基于光谱分析无损检测方法的检测效果,设计对比实验。结果表明:基于光谱分析的土壤重釐属镉含量无损检测方法具有较高的完整性和准确性,充分满足研究要求。
In order to obtain targeted soil improvement methods,cadmium content in soil need be monitored.The traditional method is affected by external factors,resulting in the poor detection effect of heavy metal chromium in soil.In this paper,spectral analysis was introduced and a non-destructive testing method based on spectral analysis was proposed.The content of heavy metals in soil samples was extracted,the calibration curve of LIBS spectrum was established,and the absorbance value of samples at different ashing temperature was detected.the detection process of cadmium content in soil was designed,and the cadmium content in soil samples was calculated by Saha equation.And the soil detection steps were optimized,and Zeeman-352 atomic absorption spectrometer and PHS-6 C precision pH detector were used to achieve the non-destructive detection of cadmium content in soil.In order to verify the detection effect of the non-destructive testing method based on spectral analysis,a comparative experiment was designed.The results showed that the nondestructive testing method based on spectral analysis had high integrity and accuracy,and fully met the research requirements.
作者
宏哲
HONG Zhe(Zhangjiakou Environmental Protection Bureau Inspection Station,Zhangjiakou Hebei 075000,China)
出处
《当代化工》
CAS
2020年第7期1552-1555,共4页
Contemporary Chemical Industry
关键词
光谱分析
土壤检测
釐属镉
釐属含量
Spectral analysis
Soil detection
Metal cadmium
Metal content
作者简介
宏哲(1981-),女,河北省衡水市饶阳县人,高级工程师,硕士,2007年毕业于华北电力大学环境科学专业,研究方向:从事土壤污染防治工作。E-mail:qindeng918013772@163.com。
