CAJ | 학술논문

采用HPLC反相C18柱分离、ICP–MS检测，建立了农田土壤中甲基汞和乙基汞的分析方法。以0.5 mol／L的硝酸溶液为浸提剂，超声波提取1 h，在优化的仪器条件下测定，甲基汞和乙基汞的质量浓度在0.1～50 ng／mL范围内与谱线强度呈良好线性关系(r≥0.999)，检出限分别为0.1，0.2 ng／mL；加标回收率分别为89.26%～94.26%，76.88%～79.27%；相对标准偏差分别为1.67%～2.38%，2.58%～3.84%(n=5)。该方法样品前处理简单、重现性好、检出限低、准确度高，适合于农田土壤中甲基汞和乙基汞的同时测定。
채용HPLC반상C18주분리、ICP–MS검측，건립료농전토양중갑기홍화을기홍적분석방법。이0.5 mol／L적초산용액위침제제，초성파제취1 h，재우화적의기조건하측정，갑기홍화을기홍적질량농도재0.1～50 ng／mL범위내여보선강도정량호선성관계(r≥0.999)，검출한분별위0.1，0.2 ng／mL；가표회수솔분별위89.26%～94.26%，76.88%～79.27%；상대표준편차분별위1.67%～2.38%，2.58%～3.84%(n=5)。해방법양품전처리간단、중현성호、검출한저、준학도고，괄합우농전토양중갑기홍화을기홍적동시측정。
A HPLC–ICP/MS method for determination of methyl mercury and ethyl mercury in field soil was proposed. The methyl mercury and ethyl mercury was separated by using C18 column and detected with ICP–MS. The methyl mercury and ethyl mercury in field soil were extracted with 0.5 mol/L of nitric acid solution and using the ultrasonic assisted extraction. The linear range of the methyl mercury and ethyl mercury were 0.1–50 ng/mL,the correlation coefficients were more than 0.999. The detection limits (LOD) of two compounds were 0.1 ng/mL and 0.2 ng/mL. The recoveries of the methyl mercury and ethyl mercury were 89.26%–94.26%and 76.88%–79.27%,and the relative standarddeviation(RSD,n=5) were 1.67%–2.38%and 2.58%–3.84%,respectively. The pretreatment of the method is simple,the reproducibility is good,LOD is low and accuracy is high,so the method is suitable for determination of the methyl mercury and ethyl mercury in field soils.