Analysis of diluted sea-water at the ng L<sup>−1</sup>level using an ICP-MS with an octopole reaction cell

Leonhard, Peter; Pepelnik, R.; Prange, Andreas; Yamada, Noriyuki; Yamada, Tomoyuki

doi:10.1039/b110180n

Cited by 129 publications

(105 citation statements)

References 34 publications

(31 reference statements)

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“…The TPTZ LOD for TRFe is about 5 to 100 times higher than LOD for ICP-MS (1 versus 0.01 to 0.2 for ICP-MS depending on the mode) (Leonhard et al 2002;Pu et al 2005). However, when used by investigators themselves rather than 'outside' laboratories, the colorimetric methods' advantage is that they are probably cheaper with faster turn-around time.…”

Section: Detection Limits and Sensitivitymentioning

confidence: 99%

A comparison of three colorimetric methods of ferrous and total reactive iron measurement in freshwaters

Verschoor

Molot

2013

Limnology & Ocean Methods

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The measurement of low levels of ferrous and total reactive iron (TRFe) using three common colorimetric methods (bathophenanthroline (BPA), triazine (TPTZ), and ferrozine) in freshwater was evaluated. The BPA method, due to a hexanol extraction step, had unacceptably high limits of detection with small sample volumes. Humic matter also interfered by forming a precipitate. Although ferrozine's limit of detection was lower, recovery of Fe spikes by TPTZ was much higher in samples with high levels of colored dissolved organic carbon (CDOC) at pH 6 (90 versus 60%) using the standard development time of 10 min because the iron reduction rate is much slower with ferrozine, which requires 1 hr. Recovery of spiked Fe at sample pH 9 was very poor (32 versus 39%). TPTZ with ascorbic acid in samples adjusted to pH 6 is recommended for TRFe analysis. In the absence of a reducing agent and CDOC, TPTZ reagents reduce ferric to ferrous iron (autoreduction), whereas ferrozine has negligible autoreducing properties. CDOC produced significant autoreducing effects using either TPTZ or ferrozine methods, leading to overestimates unless measured immediately upon reagent addition. Hence, immediate measurement with ferrozine is most suitable for ferrous. Ascorbic acid reduces more rapidly than hydroxylamine and does not need to be purified.

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Section: Detection Limits and Sensitivitymentioning

confidence: 99%

A comparison of three colorimetric methods of ferrous and total reactive iron measurement in freshwaters

Verschoor

Molot

2013

Limnology & Ocean Methods

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“…prevents them from being used in outsidelaboratory applications. Such methods would also be affected by the complex matrix of certain natural waters (e.g., the matrix effects of seawater on ICP-MS 3 and the interference of organics in anodic/cathodic stripping voltammetry 4−6 ). The development of a portable but highly sensitive and selective method is thus urgently needed.…”

Section: ■ Introductionmentioning

confidence: 99%

Highly Sensitive Visual Detection of Copper Ions Based on the Shape-Dependent LSPR Spectroscopy of Gold Nanorods

Zhang

Chen²,

Qu³

et al. 2014

Langmuir

123

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ABSTRACT:We have developed a novel approach to the rapid visual detection of Cu 2+ in natural samples based on the copper-mediated leaching of gold nanorods (GNRs). In the presence of hexadecyltrimethylammonium bromide, which can reduce the redox potential of Au(I)/ Au, the GNRs are catalytically etched by Cu 2+ preferentially along the longitudinal direction. And as a result, the localized surface plasmon resonance extinction peak shifts to short wavelength, accompanied by a color change from blue to red. The leaching mechanism has been carefully discussed in a series of control experiments. Under optimal conditions, this sensor exhibits good sensitivity (LOD = 0.5 nM). Most importantly, the approach is highlighted by its high selectivity for and tolerance of interference, which enables the sensor to detect Cu 2+ directly in a complex matrix, especially in seawater. Moreover, such a nanoparticle-based sensor is also successfully applied to test paper for the visual detection of Cu 2+ .

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“…By utilizing a medium resolution of Dm/ m = 4000 or by the application of cell gases such as H 2 , He, Xe, O 2 , or NH 3 most polyatomic interferences can be physically separated from the targeted ions or minimized to an insignificant level utilizing different gas-phase mechanisms. 80 This includes collision-induced dissociation (CID), 81 kinetic energy discrimination (KED), 81,82 charge or proton transfer reactions, 82 or mass shift reactions. 83 Even though HR- ICP-SF-MS operated in the high-resolution mode (Dm/m .…”

Section: Mass Analyzers: Status and Recent Developmentsmentioning

confidence: 99%

Inductively Coupled Plasma–Mass Spectrometry (ICP-MS) for Quantitative Analysis in Environmental and Life Sciences: A Review of Challenges, Solutions, and Trends

2012

Self Cite

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This focal point review provides an overview of recent developments and capabilities of inductively coupled plasma mass spectrometry (ICP-MS) coupled with different separation techniques for applications in the fields of quantitative environmental and bio-analysis. Over the past years numerous technical improvements, which are highlighted in this review, have helped to promote the evolution of ICP-MS to one of the most versatile tools for elemental quantification. In particular, the benefits and possibilities of using state-of-the-art hyphenated ICP-MS approaches for quantitative analysis are demonstrated with a focus on environmental and bio-analytical applications.

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Analysis of diluted sea-water at the ng L⁻¹level using an ICP-MS with an octopole reaction cell

Cited by 129 publications

References 34 publications

A comparison of three colorimetric methods of ferrous and total reactive iron measurement in freshwaters

A comparison of three colorimetric methods of ferrous and total reactive iron measurement in freshwaters

Highly Sensitive Visual Detection of Copper Ions Based on the Shape-Dependent LSPR Spectroscopy of Gold Nanorods

Inductively Coupled Plasma–Mass Spectrometry (ICP-MS) for Quantitative Analysis in Environmental and Life Sciences: A Review of Challenges, Solutions, and Trends

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Analysis of diluted sea-water at the ng L−1level using an ICP-MS with an octopole reaction cell

Cited by 129 publications

References 34 publications

A comparison of three colorimetric methods of ferrous and total reactive iron measurement in freshwaters

A comparison of three colorimetric methods of ferrous and total reactive iron measurement in freshwaters

Highly Sensitive Visual Detection of Copper Ions Based on the Shape-Dependent LSPR Spectroscopy of Gold Nanorods

Inductively Coupled Plasma–Mass Spectrometry (ICP-MS) for Quantitative Analysis in Environmental and Life Sciences: A Review of Challenges, Solutions, and Trends

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Analysis of diluted sea-water at the ng L⁻¹level using an ICP-MS with an octopole reaction cell