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Use of an inline dilution method to eliminate species interconversion for LC-ICP-MS based applications: focus on arsenic in urine
10.1039/C8JA00038G 2018-04-09 Measuring arsenic in urine provides important information for clinical and epidemiological studies. While many researchers have studied ways to improve sample storage and understand why arsenic species undergo species interconversion, none have investigated i... |
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Multispecies calibration: a novel application for inductively coupled plasma tandem mass spectrometry
10.1039/C8JA00034D 2018-04-04 Inductively coupled plasma tandem mass spectrometry (ICP-MS/MS) has significantly expanded the reach of analytical atomic spectrometry. In this work, we take advantage of the gas-phase chemistry available in ICP-MS/MS to propose a novel method of calibration.... |
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Precise and accurate boron and lithium isotope determinations for small sample-size geological materials by MC-ICP-MS
10.1039/C7JA00400A 2018-04-04 A low-blank, high-precision and highly reproducible technique for boron (B) and lithium (Li) isotope analyses by Multi-Collector Inductively Coupled Plasma Mass Spectrometry (MC-ICP-MS) were developed in this study. The new analytical protocol presented here ... |
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A highly sensitive eco-scale method for mercury determination in water and food using photochemical vapor generation and miniaturized instrumentation for capacitively coupled plasma microtorch optical emission spectrometry
10.1039/C8JA00054A 2018-04-03 A highly sensitive method based on UV photochemical vapor generation capacitively coupled plasma microtorch optical emission using a low resolution microspectrometer was developed for total mercury determination in food and water. The method fulfils most of t... |
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Antimony measurements in environmental matrices: seven considerations
10.1039/C7JA00391A 2018-03-28 The development of robust methods for determining the concentration and speciation of antimony (Sb) in natural samples is essential to understanding its distribution and cycling in nature. Here we discuss our experiences with a variety of approaches for measu... |
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An improved method of Cr purification for high precision measurement of Cr isotopes by double spike MC-ICP-MS
10.1039/C8JA00033F 2018-03-28 Chromium (Cr) isotopes have been used to trace pollution processes and reconstruct paleo-redox conditions. However, the precise determination of Cr isotopes is still challenged by difficulties in purifying Cr from samples with low Cr and high matrix content. ... |
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Modified ZSM-5 zeolite/Fe2O3 composite as sorbent for magnetic dispersive solid-phase microextraction of cadmium, mercury and lead from urine samples prior to inductively coupled plasma optical emission spectrometry
10.1039/C7JA00366H 2018-03-27 The purpose of this work is to present a simple, fast, cost effective and environmental friendly magnetic dispersive solid-phase microextraction (MDSPME) method, employing a composite based on ZSM-5 zeolite decorated with iron oxide magnetic nanoparticles (i.... |
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Comparison of the suitability of alkaline or enzymatic sample pre-treatment for characterization of silver nanoparticles in human tissue by single particle ICP-MS
10.1039/C7JA00402H 2018-03-27 To understand potential harmful effects of silver nanoparticles (AgNPs) for the growing fetus, studies dealing with the translocation and accumulation of NPs across the placental barrier are of great importance. Quantitative methods for determination of NP ma... |
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New infrared-heated sample introduction system for enhanced analytical performance of inductively coupled plasma optical emission spectrometry
10.1039/C8JA00044A 2018-03-26 The analytical performance of a new infrared (IR)-heated modified cyclonic spray chamber (MC) with a regular 12 mm/5 mm female joint (MC12/5(IR)) was evaluated. The MC12/5(IR) consists of a 50 mL cyclonic spray chamber that was modified to allow the insertion... |
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Determination of Cl, Br and I in soils by ICP-MS: microwave-assisted wet partial digestion using H2O2 in an ultra-high pressure system
10.1039/C7JA00365J 2018-03-23 In this study, we proposed a method for halogen determination using inductively coupled plasma mass spectrometry (ICP-MS) after partial digestion of soils using only H2O2 as a reagent for organic matrix decomposition. It was performed by microwave-assisted we... |