T/HNNMIA 22-2024 Determination of 16 Rare Earth Elements in Soil and Sediment: Scandium, Yttrium, Lanthanum, Cerium, Praseodymium, Neodymium, Samarium, Erbium, Europium, Gadolinium, Terbium, Dysprosium, Holmium, Ytterbium, Erbium, Yttrium using High Pressure Sealed Digestion-Inductively Coupled Plasma Mass Spectrometry

Scope

Main technical content: This document describes a method for determining the content of 16 rare earth elements in soil and sediments by high-pressure closed digestion-inductively coupled plasma mass spectrometry. This document is applicable to the determination of the content of 16 rare earth elements in soil and sediments, including scandium, yttrium, lanthanum, cerium, praseodymium, neodymium, samarium, europium, gadolinium, terbium, dysprosium, holmium, thulium, ytterbium, and lutetium. The method's detection limit and determination range are shown in Table 1. Table 1 shows the detection limit and determination range of the method, with units in micrograms per gram of element. | Element | Detection limit | Determination range | |:--|:--|:--| | Sc | 0.011 | 0.044–250 | | Gd | 0.005 | 0.020–50 | | Y | 0.006 | 0.024–250 | | Tb | 0.003 | 0.012–50 | | La | 0.007 | 0.028–500 | | Dy | 0.002 | 0.008–50 | | Ce | 0.006 | 0.024–500 | | Ho | 0.002 | 0.008–50 | | Pr | 0.007 | 0.028–50 | | Er | 0.002 | 0.008–50 | | Nd | 0.006 | 0.024–250 | | Tm | 0.002 | 0.008–50 | | Sm | 0.006 | 0.024–50 | | Yb | 0.007 | 0.028–50 | | Eu | 0.002 | 0.008–50 | | Lu | 0.002 | 0.008–50 |

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