电感耦合等离子体质谱法测定黑龙江省主要粮食产区灌溉水中27种元素

Determination of 27 elements in irrigation water of major grain producing areas in Heilongjiang by inductively coupled plasma mass spectrometry

中文关键词:  电感耦合等离子体质谱法  多元素  灌溉水  粮食产区

英文关键词:inductively coupled plasma mass spectrometry  irrigation water  multi-elements  grainproducing areas

中文摘要:

      目的 建立电感耦合等离子体质谱法测定灌溉水中27种元素, 并对黑龙江省主要粮食产区灌溉水进行分析测定。方法 优化电感耦合等离子体质谱仪的工作参数, 以6Li、45Sc、72Ge、115In、209Bi作为内标元素, 水样经0.45 μm滤膜过滤后, 采用电感耦合等离子体质谱法进行测定。结果 通过对仪器各项参数进行优化, 有效克服了各种干扰的影响, 方法的精密度、线性范围及回归系数等各项指标均符合标准要求, 相关系数r均大于0.999, 检出限为0.0010~0.56 μg/L, 定量限为0.0033~1.9 μg/L。各元素加标回收率在84.1%~104.9%之间, 测定结果相对标准偏差在0.07%~4.5%之间。结论 该方法简单、快速、准确, 适用于灌溉用水中多元素测定。

英文摘要:

      Objective To establish a method for the determination of 27 elements in irrigation water by inductively coupled plasma mass spectrometry, and to analyze and determine the irrigation water in major grain producing areas of Heilongjiang province. Methods The working parameters of inductively coupled plasma mass spectrometry were optimized. 6Li, 45Sc, 72Ge, 115In and 209Bi were used as internal standard elements. The water samples were filtered by 0.45 μm filter membrane and then determined by inductively coupled plasma mass spectrometry. Results The instrument parameters were optimized to effectively overcome various disturbances, and the method indicators, such as the precision, the linear range as well as the regression coefficients, were consistent with the standards. The correlation coefficients were all greater than 0.999. The detection limits were obtained between 0.0010?0.56 μg/L, and the limits of quantification were between 0.0033?1.9 μg/L. The recovery rates were between 84.1%?104.9%, with the relative standard deviations between 0.07%?4.5%. Conclusion The established method is simple, rapid, and accurate, which is applicable to the determination of elements in water ofirrigation water.