The measurement of Re concentration by using the triple quadrupole inductively coupled plasma mass spectrometer
Rhenium(Re)is one of the rarest elements in nature,and it is difficult to be analyzed due to its low content in nature samples.The triple quadrupole inductively coupled plasma mass spectrometer(ICP-MS/MS)provides technical support for solving this problem.In this study,we have established a method for rapidly analyzing Re content by using the triple quadrupole ICP-MS/MS.The results show that the sensitivity of the triple quadrupole ICP-MS/MS is obviously higher than that of the traditional single-rod ICP-MS.The lowest Re content of 0.5 pg/mL in sample can be accurately measured by using the triple quadrupole ICP-MS/MS.There is no influence for Re analysis when contents of matrix elements(Ca,K,Mg,Na)in sanples are relatively low.However,the accuracy of analytical results will be reduced by the matrix interference when contents of matrix elements in samples are higher than 2000 μg/mL.Therefore,the sample can be measured after ion exchange or dilution to reduce the influence of matrix effects.Analytical results of Re contents of the river water standard SLRS-6,the rock standard BHVO-2,and the rock standard BHVO-2 by using the method are(14.4±0.4)pg/mL,(0.59±0.05)ng/g and(12.46±1.21)ng/g,respectively.They are respectively consistent with previously resported results.Finally,we have analyzed Re contents of common natural samples,such as river waters,rocks,soils and sediments,by using the newly established method and obtained results which are consistent with previously reported data.These results enrich the reservoir of Re contents in nature and enhance our understanding of variations of Re contents in nature.
the triple quadrupole ICP-MS/MSrhenium contentsexperimental analysiscalibration curve
万方数据
维普
