Brian P Jackson
Brian P Jackson
Determination of low concentrations of Ga in environmental or biological samples can benefit from interference free measurement of both Ga isotopes. Unfortunately, both isotopes have potential interferences, i.e doubly charged Ba at m/z 69 ...
Direct measurement of multi-elements in high matrix samples with a flow injection ICP-MS: application to the extended Emiliania huxleyi Redfield ratio [0.03%]
基于流动注射进样ICP-MS的高基体样品多元素直接测定及其在扩展的Ehux红比研究中的应用
Qiong Zhang,Joseph T Snow,Phil Holdship et al.
Qiong Zhang et al.
The quotas of a limited number of trace elements in the extended Redfield ratios have been determined before and thought to reflect the requirements of phytoplankton. However, these quotas are found to be quite variable under different envi...
Christiane Schnabel,Carsten Münker,Erik Strub
Christiane Schnabel
The 138La-138Ce decay system (half-life 1.02 × 1011 years) is a potentially highly useful tool to unravel information about the timing of geological processes and about the interaction of geological reservoirs on earth, complementing infor...
Measurement of uranium-236 in particles by secondary ion mass spectrometry [0.03%]
利用二次离子质谱法测定颗粒物中的铀-236
David S Simons,John D Fassett
David S Simons
The determination of the relative isotopic abundance by secondary ion mass spectrometry of 236U in uranium-containing material is complicated by the presence of 235U1H+ ions at the same nominal mass as the uranium isotopic peak. The net int...
Ultra-high-precision Nd-isotope measurements of geological materials by MC-ICPMS [0.03%]
利用多接收器电感耦合等离子体质谱仪进行地质样品的超高精度Nd同位素分析
Nikitha Susan Saji,Daniel Wielandt,Chad Paton et al.
Nikitha Susan Saji et al.
We report novel techniques allowing the measurement of Nd-isotope ratios with unprecedented accuracy and precision by multi-collector inductively coupled plasma mass spectrometry. Using the new protocol, we have measured the Nd-isotopic com...
Trace element analysis of human urine collected after administration of Gd-based MRI contrast agents: characterizing spectral interferences using inorganic mass spectrometry [0.03%]
应用无机质谱法表征Gd基MRI造影剂干扰元素的特征并分析其在人体内的代谢过程
Amy J Steuerwald,Patrick J Parsons,John G Arnason et al.
Amy J Steuerwald et al.
Analysis of human urine is commonly used in biomonitoring studies to assess exposure to essential (e.g., Cu, Zn, Se) and non-essential (Pb, Cd, Pt) trace elements. These data are also used in epidemiological studies to evaluate potential as...
Improvements in Cd stable isotope analysis achieved through use of liquid-liquid extraction to remove organic residues from Cd separates obtained by extraction chromatography [0.03%]
液液萃取法去除提取色谱Cd分离物中的有机残留提高Cd稳定同位素分析的精度和效率
Katy Murphy,Mark Rehkämper,Katharina Kreissig et al.
Katy Murphy et al.
Organic compounds released from resins that are commonly employed for trace element separations are known to have a detrimental impact on the quality of isotopic analyses by MC-ICP-MS. A recent study highlighted that such effects can be par...
The influence of laser pulse duration and energy on ICP-MS signal intensity, elemental fractionation, and particle size distribution in NIR fs-LA-ICP-MS [0.03%]
激光脉冲持续时间和能量对近红外fs-LA-ICP-MS信号强度、元素分馏和颗粒尺寸分布的影响
Prasoon K Diwakar,Sivanandan S Harilal,Nicole L LaHaye et al.
Prasoon K Diwakar et al.
Laser parameters, typically wavelength, pulse width, irradiance, repetition rate, and pulse energy, are critical parameters which influence the laser ablation process and thereby influence the LA-ICP-MS signal. In recent times, femtosecond ...
Measurement of elemental concentration of aerosols using spark emission spectroscopy [0.03%]
利用火花发射光谱法测定气溶胶中元素的浓度
Prasoon K Diwakar,Pramod Kulkarni
Prasoon K Diwakar
A coaxial microelectrode system has been used to collect and analyse the elemental composition of aerosol particles in near real-time using spark emission spectroscopy. The technique involves focused electrostatic deposition of charged aero...
Brian Jackson
Brian Jackson
Two methods for the fast separation of arsenic species are presented. The general approach is to modify existing methodology utilizing carbonate eluents for a small particle size, short column length Hamilton PRPX100 column which is interfa...