Information Security management relating to the design, manufacture, testing, installation and commissioning of thermal ionization mass spectrometer
View the certificate here: 00028323 ICT ENGUS UKAS Certificate
Design, manufacture, installation, commissioning and servicing of mass spectrometers and associated equipment and products certificate.
View the certificate here: 00009378 QMS ENGUS UKAS Certificate
This bibliography provides a list of selected recent publications in which Isotopx TIMS instruments were used to generate analytical data. The first revision of the Isotopx bibliography was released in April 2012 and proved extremely popular with over 100 website downloads (it was the second most popular download after the Phoenix brochure). Of course, literature…
Zenon Palacz, IsotopX Ltd, Middlewich, Cheshire, UK. Introduction Abundance sensitivity is a measure of the contribution of the peak ‘tail’ of a major isotope on an adjacent minor isotope. The tailing is due to the collision of ions with residual gas molecules in the mass spectrometer causing a loss of ion energy. This is manifest…
Zenon Palacz, Isotopx Ltd, Middlewich, Cheshire, UK Introduction For the measurement of isotope ratios in nanogram to picogram sized samples of uranium and plutonium, an ion counting detector is used. However, when measuring a series of isotopes, any individual isotope may only be detected for a fraction of an individual analysis cycle. This will reduce…
Measurement of 2ng Nd (NdO+) using Xact Faraday collectors on a Phoenix TIMS equipped with 1e11 Ω and 1T Ω resistors.
Zenon Palacz, Davydd Wanless, Ian Turner & Tony Jones. Isotopx Ltd. UK Introduction We have shown that very small ion beams of Nd+ (5 to 50mv) can be measured accurately and precisely using the Phoenix TIMS equipped with either 1e11 Ω or 1T Ω resistors1 . For small sample sizes measurement of Nd as Nd+…
Comparative analytical performance of 1e11 Ω and 1T (1e12 Ω) resistors on Phoenix TIMS demonstrated using NBS U500 uranium standard.
Zenon Palacz, Davydd Wanless, Ian Turner & Tony Jones. Isotopx Ltd. UK Introduction We have analysed CRM U500 on the Phoenix TIMS using Faraday collectors equipped with Xact amplifier boards carrying 1e11 Ω resistors and 1e12 Ω (1T Ω) resistors. The 1T Ω resistors should in theory offer three times less noise than the 1e11…
Analytical characteristics of new Faraday amplifier boards equipped with 1e11 and 1T resistors for use in high precision TIMS isotope ratio measurements
Zenon Palacz, Isotopx Ltd, Middlewich, Cheshire, UK Introduction Thermal Ionization Mass Spectrometers (TIMS) are capable of generating the highest precision and accuracy in isotope ratio determinations. Low mass bias, accurate mass fractionation corrections, high sensitivity and the absence of isobaric interferences are key contributions to a TIMS performance. However, the ability to quantitatively measure ion…
Isotope Ratio Analysis of NBS U010 Uranium Standard Using External NBS U500 Mass Fractionation Correction
Introduction The NBS Uranium Standard U010 has been analysed in the STATIC Faraday multi-collection mode. This standard has a large range in isotope abundance and the accuracy and precision of an analysis are a good test of the linearity and noise levels of the Faraday cups. Because Uranium does not have a stable isotope ratio,…
Total evaporation analysis (TE) of 500ng loads of U500 using Phoenix TIMS – Precision and Efficiency.
Zenon Palacz, Isotopx Ltd, Middlewich, Cheshire, UK Introduction Uranium does not have a stable isotope pair that can be used to correct for mass fractionation in a TIMS. Measurements have to be made using external mass fractionation control or by total evaporation of the sample and simultaneous (static) collection of all isotopes. Addition of a…