多接收器电感耦合等离子体质谱

Hafnium Analysis

The analysis of hafnium is shown in the table below. The data was measured on the Nu Plasma 1700 under both low and medium (~2400RP) conditions.

Neodymium Analysis

The analysis of a neodymium solution (factory standard) is shown in the table below. The data was measured on the Nu Plasma 1700 under low and medium (~2300RP) resolution conditions

Lithium Analysis

We show below some preliminary results obtained using the Nu Plasma 1700 with an ICP standard Lithium solution. The sample introduction system consisted of a conventional double pass spray chamber, and no attempt was made to optimise sensitivity for this experiment. The solution used was 1.5ppm, and gave a signal of 17.5volts.

Chromium Analysis

The mass spectrum of Chromium is shown below. The data was measured on the Nu Plasma 1700 at medium (~2600RP) conditions, and illustrates some of the problems which are to be expected with measurements of this element.

Abundance Sensitivity

The abundance sensitivity of the Nu Plasma 1700 is shown and is measured by determining the tail from the 238U at mass 237. The scans show the 238U measured on the L2 Faraday with the 236U and 237 mass range being measured by the IC0 ion counting multiplier.

U-Pb Analysis

For in-situ laser ablation and low level solution analysis of U-Pb measurements, Nu Instruments have developed an optional ‘plug-in’ collector block which allows 204Pb, 206Pb, and 207Pb to be simultaneously measured on ion-counting multipliers whilst measuring 238U and 238U in Faraday collectors (Figure 1). For mass bias corrections simultanoeus measurement of 203Tl and 205Tl can also be made. Using this method, lead blanks and 204Hg isobaric interference corrections can be made by performing an on-peak blank measurement immediately before the sample is introduced into the plasma. This new U-Pb block does not reduce the degree of flexibility for other type of analysis such as hafnium, neodymium etc as only the locations of the ion-counting multiplier slots have been relocated.