化学分析计量
化學分析計量
화학분석계량
CHEMICAL ANALYSIS AND METERAGE
2015年
1期
58-60
,共3页
电感耦合等离子体质谱法%土壤%铀
電感耦閤等離子體質譜法%土壤%鈾
전감우합등리자체질보법%토양%유
inductively coupled plasma mass spectrometry%soil%uranium
建立电感耦合等离子体质谱法测定土壤样品中痕量铀含量的方法。采用硝酸、氢氟酸、高氯酸混合酸消解样品后，以铼为内标溶液校正基体干扰，用电感耦合等离子体质谱仪测定土壤中的痕量铀含量。实验结果表明，铀的质量浓度在0～20 ng／mL范围内与信号强度呈线性关系，相关系数r=0.9999，方法检出限为0.006μg／g，测定结果的相对标准偏差小于5%(n=6)，加标回收率在96%～103%之间。用该方法与标准方法对同一样品进行测定，两种方法测定结果一致。该方法准确可靠，满足土壤样品中痕量铀含量的测定要求。
建立電感耦閤等離子體質譜法測定土壤樣品中痕量鈾含量的方法。採用硝痠、氫氟痠、高氯痠混閤痠消解樣品後，以錸為內標溶液校正基體榦擾，用電感耦閤等離子體質譜儀測定土壤中的痕量鈾含量。實驗結果錶明，鈾的質量濃度在0～20 ng／mL範圍內與信號彊度呈線性關繫，相關繫數r=0.9999，方法檢齣限為0.006μg／g，測定結果的相對標準偏差小于5%(n=6)，加標迴收率在96%～103%之間。用該方法與標準方法對同一樣品進行測定，兩種方法測定結果一緻。該方法準確可靠，滿足土壤樣品中痕量鈾含量的測定要求。
건립전감우합등리자체질보법측정토양양품중흔량유함량적방법。채용초산、경불산、고록산혼합산소해양품후，이래위내표용액교정기체간우，용전감우합등리자체질보의측정토양중적흔량유함량。실험결과표명，유적질량농도재0～20 ng／mL범위내여신호강도정선성관계，상관계수r=0.9999，방법검출한위0.006μg／g，측정결과적상대표준편차소우5%(n=6)，가표회수솔재96%～103%지간。용해방법여표준방법대동일양품진행측정，량충방법측정결과일치。해방법준학가고，만족토양양품중흔량유함량적측정요구。
A method for the determination of trace uranium in soil samples by inductively coupled plasma mass spectrometry was established. After soil samples were dissolved with mixed acid,the uranium contents were determined by inductively coupled plasma mass spectrometry. The uranium mass concentration and signal intensity had a good linear relationship in the rang of 0–20 ng/mL with the correlation coefficient of 0.999 9, the detection limit was 0.006μg/g. The relative standard deviation of determination results was less than 5%(n=6),and the recovery of standard addition was 96%–103%. The sample results detected by the method were consistent with those obtained by the national standard method. The method is accurate and reliable,it can be applied to the requirements for the determination of uranium content in soil samples.
