冷原子荧光光度法测定土壤中汞

Analysis of Cold Vapor Atomic Fluorescence Spectrometry determination of mercury in soil

分析了在沸水浴中用2mol/L硝酸——4mol/L盐酸在密闭的玻璃器皿中将土壤样品进行消解,然后用冷原子荧光法测定土壤中的汞含量,实验表明:该方法与常规样品消解方法相比,样品消解时间短,所用酸的量较少,可操作性强,样品的准确度、加标回收率较高。

In this paper, it describes the experiment that using 2mol / L nitric acid - 4mol / L HCl digests the soil sample in a sealed glassware with a boiling water bath, and then determining the mercury in soil by means of cold atomic fluorescence spectrometry. The soil was digested by nitric acid （2tool/L） and hydro- chloric acid （4tool/L） in a hermetic with boiling water bath . And the mercury in the soil was determined by Cold Vapor Atomic Fluorescence Spectrometry . The results indicate that compared with conventional sample digestion, this method has the advantages of shorter digestion time, less acid cosumption in the di- gestion, better operability, and higher accuracy and adding standard recovery rate.