CAJ | 학술논문

应用硝酸微波消解土壤样品-冷原子吸收法测定土壤中的汞。通过正交试验，优化了土壤中汞的微波消解条件。并对干扰消除、方法精密度、加标回收、检出限进行了试验研究。在0～10μg／L范围内线性关系良好，方法测定下限为0．20μg／L，土壤中汞的检出限为0．005μg／g。该优化条件对汞含量为0．02—0．46μg／g的土壤样品，汞提取完全。建立了一种简便、成本低、干扰少、灵敏度高的方法。
응용초산미파소해토양양품-랭원자흡수법측정토양중적홍。통과정교시험，우화료토양중홍적미파소해조건。병대간우소제、방법정밀도、가표회수、검출한진행료시험연구。재0～10μg／L범위내선성관계량호，방법측정하한위0．20μg／L，토양중홍적검출한위0．005μg／g。해우화조건대홍함량위0．02—0．46μg／g적토양양품，홍제취완전。건립료일충간편、성본저、간우소、령민도고적방법。
After nitric acid-microwave digestion, the mercury in soil was determined by Cold-Vapor Atomic Absorption Spectrometry. Through orthogonal design the conditions of microwave digestion were optimized. The experiments included interference elimination, spike recovery and detection limit. The calibration line was linear in the range of 0 - 10 g/L for mercury The lower detectable limit of the method was 0. 20 g/L and the detection limit of mercury in soil was 0. 05 g/L At the optimal condition, the mercury was extracted completely from soil for mercury content of soil samples ranging in 0. 02 - 0.46 g/g. It is a simple and convenient method with low cost, low interference and high sensitivity.